Oracle Asm Drop Disk From Dismounted Diskgroup

SQL> DROP DISKGROUP datagrp1 INCLUDING CONTENTS; DROP DISKGROUP datagrp INCLUDING CONTENTS * ERROR at line 1: ORA-15039: diskgroup not dropped ORA-15027: active use of diskgroup "DATAGRP1" precludes its dismount SQL> SQL> DROP DISKGROUP datagrp1 FORCE INCLUDING CONTENTS;. Any Oracle ASM file is completely contained within a single disk group. Disk groups can be rebalanced manually Using REBALANCE clause and you can modify the POWER clause default value. SQL> Restore asm metadata. Using MOUNT and DISMOUNT options you can make one or more Disk Groups available or unavailable. Moving temp files to new ASM diskgroup [[email protected] dbs]$ sqlplus / as sysdba. Altering ASM Disk Groups Friday, July 06, 2018 < drop diskgroup data including contents; drop diskgroup data including contents * ERROR at line 1: ORA-15039. Adding disk group to ASM instance using ASMCA Here is the step by step process on how to add diskgroup to existing ASM instance via ASMCA. On Linux, ASM is capable of referencing disks as raw devices or by using the ASMLib software. 0 people found this article useful. While dropping a disk for a diskgroup, the entire diskgroup was forcibly dismounted on other ASM instances. This page consists of all the well-developed articles of the Technologies. Cause:-to perform certain activities, we need to connect to ASM instance as sysasm. 2 ASM and afterwards upgraded to 12. 1) Create the Disk group with new name in the new storage. Issuing the ALTER DISKGROUPALL MOUNT or ALTER DISKGROUPALL DISMOUNT command does not affect the value of this parameter. This article was helpful. The diskgroup was unrecoverable and unusable. The trick was to re-initialize the disks (clear ASM metadata) before re-creating it. Select a disk from the Path list. ALTER DISKGROUP ALL DISMOUNT; ALTER DISKGROUP ALL MOUNT; ALTER DISKGROUP data DISMOUNT; ALTER DISKGROUP data MOUNT; DROPEO DE DISCOS. ASM manage database physical files in disk. Administering Oracle ASM Disk Groups. SQ> conn /as sysasm Connected. Possible values range from 1 to 11 with 11 being the fastest. The database instances that use Oracle ASM can continue operating while you administer disk. MB Usable_file_MB Offline_disks Name DISMOUNTED N N 512 4096 1048576 0 0 0 0 0 DATA. SQL> alter diskgroup test dismount; Diskgroup altered. While creating a new Oracle database with ASM on an AWS EC2 platform I encountered the below errors while attempting to mount one of the ASM disk groups: ALTER DISKGROUP VOTE_DISK mount * ERROR at line 1: ORA-15032: not all alterations performed ORA-15017: diskgroup "VOTE_DISK" cannot be mounted ORA-15040: diskgroup is incomplete. share | improve this question ASM diskgroup drop from. Changes Cause. This number may change across disk group mounts. Oracle ASM also automatically mounts a disk group when you initially create it, and dismounts a disk group if you drop it. Resize disk size ALTER DISKGROUP dgroup1 RESIZE DISKS IN FAILGROUP failgrp1 SIZE 100G;. GROUP_NUMBER NAME TOTAL_MB FREE_MB ----- ----- ----- ----- 1 VOL1 61439 61187 2 VOL2 61439 61164 3 VOL3 61439 61164 4 VOL4 409594 252006 Dropping a disk in a disk group seemed to work as advertised, the real benefit of course, is instead of it being just a disk you were dropping but that it was a lun representing a whole storage array, then this has real potential for allowing you to upgrade storage or even migrate to a different storage platform entirely. Move Non SYSTEM/SYSAUX datafiles to another ASM diskgroup The steps involved in moving a datafile from a diskgroup to another is as given below. From: oracle-l-bounce_at_freelists. Attempts to mount the disk group will render the following error: ORA-15032: not all alterations performed ORA-15040: diskgroup is incomplete ORA-15042: ASM disk “n” is missing. Although as per the standards, a backup of OCR happens every 4 hours but the same is preserved in ASM diskgroup, which in our case was dismounted and therefore the backup could not be. Execute the following command to replace the existing bloated disk in the disk group with a new disk. When a disk is dropped, the disk group is rebalanced by moving all of the file extents from the dropped disk to other disks in the disk group. This will configure the on-boot properties of the Oracle ASM library driver. This makes them available to all database instances running on the same node as Oracle ASM. TOTAL_MB: NUMBER: Total capacity of the disk group (in megabytes. When the disk groups are created with some redundancy say External, Normal or High then its redundancy cannot be changed. When a disk group is mounted, a disk group number is chosen. ASM disk with the header status of Former indicates that those disk were already part of the diskgroup and now it can be added into existing diskgroup or New diskgroup. The default is EXCLUDING CONTENTS, which provides syntactic consistency and prevents you from dropping the disk group if it has any contents. ORACLE ASM 在磁盘组,磁盘和文件的个数限制如下: (1)最多63个disk groups (2)最多10000个ASM disks (3)每个disk group里最多1百万个文件。 非Exadata 存储的情况下,ASM 存储大小限制: (若是exadata,则容量*2倍) (1)支持的每个ASM disk 最大容量是2 TB。. SQL> alter diskgroup dg_data dismount; Diskgroup altered. hanging) ASM will not restart the ASM rebalance automatically (this was already enhanced on 11g and 12c), therefore you will need to restart a manual rebalance. Replace the /dev/sd* with your new disks. After the disk drop operation, ASM performs a rebalance to restore full redundancy for the data on the failed disks. linux 종료 후 disk 추가 하고 linux 시작 2. SQL> alter diskgroup NORMDG undrop disks / Diskgroup altered. I have dropped the disk from ASM diskgroup: > ALTER DISKGROUP DATA01 DROP DISK DISK1; Oracle did a rebalance operation and then dropped the disk. This can be done via the command-line interface or via the gui. Normally Disk groups are mounted at ASM instance startup and dismounted at shutdown. You can not drop a redo log file which status is CURRENT or ACTIVE. 6 x86_64 DB: 11. - lsdsk Command Lists disks visible to ASM. As of Oracle ASM 11g, this command has been simplified. Oracle ASM File Access Control for Disk Groups in Oracle 11g: Oracle ASM File Access Control provides optional protection for the content of Oracle ASM disk groups from accidental access by unauthorized Oracle ASM clients, such as an unauthorized database. This chapter describes how to administer Oracle Automatic Storage Management (Oracle ASM) disk groups. /rman target / RMAN> startup. (Current Disk Group Used % of Safely Usable value: 100) OEM alert for Automatic Storage Management +ASM5_ssssss5: Disk group RECO has used 100% of safely usable free space. If the SIZE clause is omitted the disks are resized to the size of the disk returned by the OS. By the time the Unix Sys Admin returned the disk it was unrecognozable by ASM as the disk headers had been overwritten. Cause: An attempt was made to drop a disk that is offline. Drop it from the other instance where it is mouted17:09:32 [email protected]+ASM1 SQL> drop diskgroup tba1 ;Diskgroup dropped. When you add/drop disk in/from disk group ASM re balances file data across all the disks of disk group. Current status of the request is : command 'renamedg' will be implemented in a future release. Identify the Disks you want to add and Disks you want to remove by using "oracleasm listdisks" as oracle user on the server. [[email protected] ~]$ sqlplus / as sysasm SQL> alter diskgroup DATA_TP rebalance with balance compact wait; Diskgroup altered. The entire disk group is automatically dismounted, which means loss of data accessibility. In that case you need to create a pfile from the spfile and then startup the ASM instance using the pfile. If your disk group is normal redundancy AND if another disk fails AND it's the partner of that disk that has already failed, your disk group will be dismounted, all your databases that use that disk group will crash and you may lose data. SQL> drop diskgroup DATA01 force including contents; Diskgroup dropped. You can mount an ASM diskgroup using the ALTER command ALTER DISKGROUP FAS980DG1 MOUNT; Hope this helps. Once the ASM disks are dropped the data on them is rebalanced over to the remaining disks, until this operation is completed you should not touch the underlying physical devices. Check the existing voting disk details. It may be added to a new disk group with the ALTER DISKGROUP statement. Oracle 12c R1 ASM DiskGroup Rebalance This video was recorded in February 2015. 디스크 그룹 변경과 관리 (1) 디스크 추가 → Alter Diskgroup 그룹명 Add Disk '경로/디스크명' [Rebalance power n]; (2) 디스크 삭제 → Alter Diskgroup 그룹명 Drop Disk '경로/디스크명' [Rebalance power n]; (3) 디스크 삭제 중일때 취소 작업 (삭제 종료시 취소 불가). ** On other nodes in ASM instance dismount the diskgroups group can be recreated the disk group is first dropped then recreated with new redundancy never know a limitation to drop. Posted by PDSERVICE on Apr 09, 2020 In. 19 ASM 10 Auditing 22 Backup & Recovery 45 Database Info 8 Dataguard 10 Flashback Database 0 General 11 Jobs & Scheduler 84 Monitoring 7 Network 17 Object Management 8 OEM & Cloud Control 13 Partitioning 15 Performance 5 RAC 12 Statistics 10 Tablespace & Datafile 7 User Management. Posted in Administration, RAC / Tagged Alter database datafile datafile_name offline drop, alter diskgroup diskgroupname mount force, ASM_DISKGROUPS, CREATE DISKGROUP, CRS-4123: Oracle High Availability Services has been started. 1 and later. Topic: This post describes a few tips and techniques on how to recover ASM files from a dropped disk group and an example of how to 'undrop' an ASM disk group Context: This research stems from a recent case I have investigated where the data disk group of a test DB had all the disks with header_status 'FORMER': in other words the disk group had been dropped and hence could not be mounted. dg ONLINE ONLINE linuxprd5 ora. We ran into a situation where Oracle ACS delivered Exadata (Quarter Rack) with 20% of space allocated to DATA Diskgroup, and 80% to RECO! We requested the reverse. But if a disk has failed and ASM has initiated rebalance, there may be a legitimate reason for concern. Before you use the command, ensure that ASM diskgroup is dismounted. Oracle has to spread this information to another RAC node(s). ASMCA ( ASM Configuration Assistant) is a GUI utility provided by grid, to manage ASM instances and diskgroups like , create diskgroup, adding disk/diskgroup, dropping disk/diskgroup, mount/dismount diskgroup etc. Well as I said , supposed to run automated… cause at this point and time , during the day this is working properly but during the night we get per disk in the disk group a message similar to: asm-diskgroupname-data-001: map in use. Whenever there is a disk added/removed/resized, ASM starts to rebalce the data on the disks in the disk group. By the time the Unix Sys Admin returned the disk it was unrecognozable by ASM as the disk headers had been overwritten. Below exercise is to move everything from old OCR/VOTING diskgroup OCR_VOTE to new diskgroup OCR_VOTE2. alter diskgroup prime_data drop disk mob10g_data_disk01 rebalance power 8 --after this cmd all data will be moved from old disk (MOB10G_DATA_DISK01) to new disk (MOB10G_DATA_VSP_DISK01) -- you can also do it using Grid Control GUI. Oracle ASM also automatically mounts a disk group when you initially create it, and dismounts a disk group if you drop it. (Current Disk Group Used % of Safely Usable value: 100) OEM alert for Database Instance : Archive area +RECO has -7440384 free KB remaining. com DROP DISK The DROP DISK clause lets you drop one or more disks from the disk group and automatically rebalance the disk group. EXTERNAL REDUNDANCY - No mirroring for disks that are already protected using hardware RAID or mirroring. ASM provides the performance of raw I/O with the easy management of a file system. Information about How To Configure ASM Diskgroup with SQL Commands This document will explain how to Configure ASM Diskgroups through sql. At this moment we had not created database. Check database for nologging operations; Show progress of RMAN operations; Show RMAN. SQL> alter diskgroup flash dismount; Diskgroup altered. As oracleasmlib is installed, configure the kernel module for ASM. Available commands to manipulate Disk Groups are : Create, Alter, Drop, Mount, Dismount and Rebalance. 00$ export ORACLE_SID=+ASM-bash-3. If your disk group is normal redundancy AND if another disk fails AND it's the partner of that disk that has already failed, your disk group will be dismounted, all your databases that use that disk group will crash and you may lose data. CONFLICT - Automatic Storage Management disk was not mounted due to a conflict; FOREIGN - Disk contains data. SQL> drop diskgroup dg-name force including contents; Can mount the disk in restricted mode, to rebalance faster. Follows a quick overview about the issue: • Server Spec: OEL 7 + Grid 12c + DB 11gR2 • After I created ASM Disk Groups on primary cluster and performed an initial data refresh to work with GG…. 00 col TOTAL_GB format 999,999. SQL> ALTER DISKGROUP data MOUNT;. After dismounted the disk group, now we can drop it directly using following command. When the ASM instance is opened gracefully, it first discovers the disks and then mounts all the existing disk groups on the local instance. *Last operation will write to disk header, so make sure this disk is CANDIDATE or FORMER, otherwise you will drop disk from ASM diskgroup and left it as CANDIDATE. SQL> alter diskgroup flash dismount; Diskgroup altered. org [mailto:oracle-l-bounce_at_freelists. log during Rman Backup Thanks, Anil. ASM provides the performance of raw I/O with the easy management of a file system. SQL> alter diskgroup data dismount; Diskgroup altered. ASMCA ( ASM Configuration Assistant) is a GUI utility provided by grid, to manage ASM instances and diskgroups like , create diskgroup, adding disk/diskgroup, dropping disk/diskgroup, mount/dismount diskgroup etc. Applies to: Oracle Database - Enterprise Edition - Version 10. Startup and Shutdown of ASM Instances. start/stop ASM instances 2. Oracle ASM Unable to remove ASM Diskgroup from the ASM Instance. ASM has some header information that will have to be removed using a dd command 2. All previous versions have the parameter range of 0 to 11. Ok doke, First let I make it clear: Adding a disk with force should be avoided, mainly by all the rebalance involved. the disk group is rebalanced by moving all of the file extents from the dropped disk to other disks in the disk group. After dismounted the disk group, now we can drop it directly using following command. shipon Foiz Md. The second example drops the disk group fra, including any data in the. 12c archive archivelog ASM Audit AWR backup cloud database dataguard datapatch datapump DISKGROUP EMCTL EXPDP flashback goldengate grid impdp installation multitenant OEM OGG-ORA-oracle oracle 12. EXTERNAL REDUNDANCY. The check command was already available in Oracle ASM 10g. 160119 RAC [[email protected] 8540]$ crsctl query css votedisk ## STATE File Universal Id File Name Disk group — —– —————&…. Once the data redundancy has been re-established, it simply updates the PST to say that the disk is no longer a member of that disk group. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Create Oracle database with ASM DISK Group 7:34 PM Posted by Dilli Raj Maharjan Oracle Configuration 1 comment Set proper Oracle environment variables and execute dbca command to create new database. alter diskgroup data01 drop disk DISK7; ORA-15032: not all alterations performed ORA-15054: disk "DISK7" does not exist in diskgroup "DATA01" I don't understand why was these errors occurring :(So I added disk by force: ALTER DISKGROUP DATA01 add DISk 'ORCL:DISK7' name DISK7 force; It was added and Oracle tried to make a. alter diskgroup DATA add disk '/dev/oracleasm/VOL5' name VOL5,'/dev/oracleasm/VOL6' name VOL6; 从diskgroup删除disk. Now that the ASM Disk Groups and constituent Disks have been dropped/erased, the new ASM Disk Groups can be recreated. , crsctl stop cluster -all, crsctl stop has, drop. Follows a sample script to be used to generate OS commands for this:. ( excluding the local node) Suppose for 2 node rac, i have logged to node 2 and dismounted the diskgroup and ran the drop command on node 1. pm Find file Copy path Fetching contributors…. This document will describe how to drop the last active Diskgroup in Oracle 11g ASM. As a part of migrating the ASM to a new SAN storage and would like to add the new disks to the existing the ASM disk group and plan to drop the old disks. SQL> ALTER DISKGROUP disk_group_1 REBALANCE POWER 5; MOUNT and DISMOUNT DiskGroups: Normally Disk groups are mounted at ASM instance startup and dismounted at shutdown. SQL> alter diskgroup data drop disk disk1;. QUIESCING - CRSCTL utility attempted to dismount a disk group that contains the Oracle Cluster Registry (OCR). Environment: R12 (12. Then use the following SQL to rename the disks. SQL> drop diskgroup data including contents; drop diskgroup data including contents * ERROR at line 1: ASM diskgroups dismounted. Oracle ASM Configuration Assistant enables you to configure or create Oracle ASM disk groups with the Configure ASM Disk Groups tab, as shown in Figure 9-4. 6) In your Automatic Storage Management (ASM) instance, one of the nonempty disk groups,DGROUP1, is no longer required and you want this disk group to be removed. Unfortunately when I tried to create new ASM disks using the ASMLib and the Oracle ASM create disk command it failed to create the disks! I thought this to be odd because I had used the fdisk command on Linux to add a new partition on each of the LUNs presented to the OS for ASM. 2$ ls -ltr. From Oracle’s docs:. For normal redundancy in ASM, the voting disk requires a minimum of 3 ASM disks in the disk group. Basically you clean up the asm disk header of all the disks in the diskgroup. diskgroup – Name of disk group to drop. org' Subject: ASM disk group Hi, Anyone have an idea how to drop a dismount ASM disk group? I can't mount it and also can't drop it?. The voting disk is a shared disk that is accessed by all the member nodes in the cluster during an operation. The default DISK_REPAIR_TIME attribute value of 3. 3) Take a control file backup in format + newdiskgroup 4) Shutdown the db, startup nomount the database 5. Then I started ASMCA to create the new ASM disk groups and noticed that the disk group "DATA" was already present in "Dismounted" state as shown in below screenshot. All other password file manipulation is performed with ASMCMD or SRVCTL commands. As a part of migrating the ASM to a new SAN storage and would like to add the new disks to the existing the ASM disk group and plan to drop the old disks. ASM_DISKSTRING specifies an operating system-dependent value used by Automatic Storage Management to limit the set of disks considered for discovery. You should store the voting disks on shared accessible storage like Oracle Automatic Storage Management (ASM) or a certified cluster file system. 1 is the default setting for the COMPATIBLE. oracle 12c partition patch PDB performance pluggable RAC redolog rman SCRIPT scripts security SHELL script standby statistics tablespace temp undo. Next I proceed to check ASM Alert logs for any errors (actually I simply check our custom monitoring system that keeps an eye on these things) and if none found I drop the TESTGRP and assign the 4 new DISKs to the real production DISK GROUP that they were destined for. mount : Mounts a disk group. ORA-15027: active use of diskgroup "TEST_RENAME" precludes its dismount (DBD ERROR: OCIStmtExecute) NOTE# Check the active files in ASM using the lsof. Replace the /dev/sd* with your new disks. Add/Remove Disks from ASM disk group on live database ASM will allow the adding and removing of volumes from a disk group while disk group is still in use by a database. HUNG – Disk drop operation cannot continue because there is insufficient space to relocate the data from the disk being dropped. alter diskgroup DATA drop disk VOL5;. log "WARNING:…. For information about dropping disks, see"Dropping Disks from Disk Groups". Dans la configuration de cette partie j’ai laissé le nom du diskgroup ASM à sa valeur par défaut : DATA, alors que j’ai utilisé un disk ASM labellisé « OCR » [[email protected] ~]$ oracleasm listdisks OCR [[email protected] ~]$ oracleasm querydisk -v -d OCR Disk "OCR" is a valid ASM disk on device [8,21] [[email protected] ~]$ ls -l /dev/oracleasm. Adicionar Disco a un Disk Group ALTER DISKGROUP DATA ADD DISK '/dev/rdsk/c1t2d0s0'; 6. 0 - 64bit Production With the Real Application Clusters and Automatic Storage Management options [[email protected] ~]$. ERROR at line 1: ORA-15067: command or option incompatible with diskgroup redundancy. 如果进一步损坏了相关asm disk,那后续恢复就很麻烦了,可能需要使用dul扫描磁盘来进行抢救性恢复,而且. TOTAL_MB: NUMBER: Total capacity of the disk group (in megabytes. The disk groups are dismounted at Oracle ASM instance shutdown. You can override this attribute with an ALTER DISKGROUP DISK OFFLINE statement and the DROP AFTER clause. This information includes how to create, alter, drop, mount, and dismount Oracle ASM disk groups. The ASM_DISKGROUPS is a dynamic parameter specifies a list of the names of disk groups that an Oracle ASM instance mounts at startup. 2), if the COMPATIBLE. 0 people found this article useful. After mounting the diskgroup in restricted mode, we can now rename the diskname. This will alert you via email if a certain tablespace reaches the set threshold. After Googling couple of site and trying different suggestions. Your command to add the disk to the diskgroup looks correct to me. Oracle Knowledge Sharing Blog - Veera (Oracle Certified Professional) ASM diskgroups dismounted. Alter Diskgroup diskgroup_name Mount Force; The unavailable disks are taken offline. Set Oracle environment to the ASM instance before executing the asmca command. Crete Disk Group: Create Disk groups using the CREATE DISKGROUP statement and specify the level of redundancy. To shut down the local ASM instance, you can use the various options available with the SHUTDOWN command in the SQLPLUS prompt. log "WARNING:…. dg is dropped Step 2: Extract DDL (create diskgroup) command for RECO_FHDB from ASM alert log and replace redundancy clause and run create diskgroup command on ASM instance. 1) Identify the data file to be moved. But I can force the disk group dismount even if some files in the. Approach: 1. 0 or higher, whereas any database client whose software version is higher than or equal to 10. I had a database where someone had created a datafile outside of ASM and on the Oracle Home filesystem. When ASM realised this is immediatly issued a ALTER DISKGROUP FLASH_D DISMOUNT FORCE command. The resize operation fails if there is not enough space. The other option for multiple diskgroups is to drop the default griddisks and create new ones based on a new layout of diskgroups. 00 select name,. ##### To find ASM Diskgroup and Disks status set lines 132 col name format a14 col PATH format a33 select GROUP_NUMBER,NAME,STATE,TYP. CREATE DISKGROUP PRUEBA EXTERNAL REDUNDANCY DISK '/dev/rdsk/c1t3d0s0'; 5. DISMOUNTED - Disk group was cleanly dismounted by the Oracle ASM instance following a successful mount. , crsctl stop cluster -all, crsctl stop has, drop. After adding a disk to an ASM disk group there is a rebalancing of existing data to spread it out over all of the disks–including the newly-added disk(s). 4 two node cluster. Next I proceed to check ASM Alert logs for any errors (actually I simply check our custom monitoring system that keeps an eye on these things) and if none found I drop the TESTGRP and assign the 4 new DISKs to the real production DISK GROUP that they were destined for. ASM diskgroup creation on windows with dummy disks Today I needed to setup a small test Oracle database on Windows with Oracle ASM storage. Create external redundancy disk groups when using high-end storage arrays. alter diskgroup DATA drop disk VOL5;. The relevant MOS note is Doc ID 1938950. What if the disk from the picture above is only temporarily offline and comes back online after a short while? These transient failures have been an issue in 10g, because the disk got immediately dropped, followed by a rebalancing to re-establish redundancy. Dropping ASM Disk ORA-01948 Environment: Oracle Enterprise Edition 11. alter diskgroup all mount / alter diskgroup data1 mount / alter diskgroup all dismount / Views Containing Oracle ASM Disk Group Information Tuning Oracle disk I/O: ASM configuration;. But I can force the disk group dismount even if some files in the disk group are open. Disk groups can be rebalanced manually Using REBALANCE clause and you can modify the POWER clause default value. This information includes how to create, alter, drop, mount, and dismount Oracle ASM disk groups. See here if you don’t know why. Undropping disks from an ASM Disk group. Identify the disks that have a large amount of free space that can be reclaimed, and the disk group they are part of. So, ASM dismount the diskgroup. Sonra aşağıdaki komutu gireriz. disk group's name. It simplifies database administration by eliminating the need for you to directly manage potentially thousands of Oracle database files. Dropping a disk in an ASM Disk Group One of the big selling points of ASM is the ability to reconfigure the storage online. New disks can be added to…. Oracle By Example 4,340 views. ORA-15260: permission denied on ASM disk groupSQL> alter diskgroup DG1 rebalance power 11;alter diskgroup DG1 rebalance power 11*ERROR at line 1:ORA-15032: not all alterations performedORA-15260: permission denied on ASM disk groupSolution:SQL> exitDisconnected from Oracle Database 11g Enterprise Edition Release 11. Total System Global Area 1135747072 bytes. After the specified time has elapsed, ASM drops the disk. Oracle ASM also automatically mounts a disk group when you initially create it, and dismounts a disk group if you drop it. SQL> DROP DISKGROUP datagrp1 INCLUDING CONTENTS; DROP DISKGROUP datagrp INCLUDING CONTENTS * ERROR at line 1: ORA-15039: diskgroup not dropped ORA-15027: active use of diskgroup "DATAGRP1" precludes its dismount SQL> SQL> DROP DISKGROUP datagrp1 FORCE INCLUDING CONTENTS;. You can refer to 11gR2 docs for details renamedg [phase={ one|two |both } ] dgname=diskgroup newdgname=newdiskgroup [config=configfile]…. Mount/dismount ASM diskgroups - Oracle Database Script. SQL> drop diskgroup ocr; drop diskgroup ocr * ERROR at line 1: ORA-15039: diskgroup not dropped ORA-15073: diskgroup OCR is mounted by another ASM instance On racnode2 ASM instance. An external redundancy disk group would be simply dismounted, so we will focus on the normal and high redundancy disk groups. SQL> ALTER DISKGROUP disk_group_1 REBALANCE POWER 5; MOUNT and DISMOUNT DiskGroups: Normally Disk groups are mounted at ASM instance startup and dismounted at shutdown. GROUP_NUMBER. The purpose of this document is to provide the steps required to resize a physical disk or LUN at the operating system level and subsequently resize the diskgroup using the new space. SQL> DROP DISKGROUP data INCLUDING CONTENTS; DROP DISKGROUP data INCLUDING CONTENTS * ERROR at line 1: ORA-15039: diskgroup not dropped ORA-15027: active use of diskgroup "DATA" precludes its dismount. Normally Disk groups are mounted at ASM instance startup and dismounted at shutdown. Generic approach – per LUN copying (like EMC SanCopy) – is not entire possible for RAC when all is kept in ASM disk groups without creating at least one new disk group. 0 to 136 years. 10) to confirm the disk group creation. The database instance is creating and then closing archive logs one at a time in the FLASHDG_NEW disk group. As previous poster has replied, you should first try to add the disk using force option. SQL> ALTER DISKGROUP OT2D1N_DG1 DROP DISK OT2D1N_DG1_0001; Diskgroup altered. Approach: 1. As a part of migrating the ASM to a new SAN storage and would like to add the new disks to the existing the ASM disk group and plan to drop the old disks. In most cases, the default value will be sufficient. When a disk group is mounted, a disk group number is chosen. 如果进一步损坏了相关asm disk,那后续恢复就很麻烦了,可能需要使用dul扫描磁盘来进行抢救性恢复,而且. Oracle ASM chooses the disk on which to store the mirror copy in a different failure group than the primary copy. We added 10 disk and as the rebalance was occurring this diskgroup dismounted because the check that ASM does during the rebalance operation found corruption on block 40. After a disk group is created, you cannot alter the redundancy level of the disk group. SQL> alter diskgroup DATA_DB67043 dismount force /* ASM SERVER:3960809682 */ Mon Dec 09 13:42:47 2013. mount : Mounts a disk group. Before we can rename a diskgroup is must be dismounted on all cluster nodes. ASM:Automatic Storage Management, 是Oracle 主推的一种面向O数据库 Oracle ASM 详解 原创 Dave 最后发布于2010-02-21 14:13:00 阅读数 52794 收藏. About Oracle ASM Disk Groups. I have two node RAC cluster Node01 and Node02. The ASMCMD remap command was introduced to address situations where a range of bad sectors exists on a disk and must be corrected before ASM or database I/O. EXTERNAL REDUNDANCY - No mirroring for disks that are already protected using hardware RAID or mirroring. alter diskgroup mount force; -- This is useful when you have missing disk or disks. by using below cmd. Note the diskgroup was a external redundancy diskgroup. Cause: An attempt was made to ADD to a diskgroup a disk that was already part of another diskgroup,or an attempt was made to DROP / OFFLINE / ONLINE / CHECK a disk that was not part of the specified diskgroup. It was necessary there to specify what to check with the check command. Applies to: Oracle Database - Enterprise Edition - Version 10. from ASM diskgroup using sqlplus alter diskgroup drop disk command. Starting from 11gR1, a disk that becomes unavailable is first offlined , the disk repair timer kicks in, and if the time exceeds the value specified by DISK_REPAIR. create or alter or drop diskgroups 3. alter diskgroup prime_data drop disk mob10g_data_disk01 rebalance power 8 --after this cmd all data will be moved from old disk (MOB10G_DATA_DISK01) to new disk (MOB10G_DATA_VSP_DISK01) -- you can also do it using Grid Control GUI. Next, when voting disks are placed into an ASM diskgroup, which is the default in 11. Managed file creation and deletion —Oracle ASM further reduces administrative tasks by enabling files stored in Oracle ASM disk groups to be Oracle Managed Files. Home > Blogs > PDSERVICE's blog > Bug 13331814 : Oracle ASM DISKS TURNED INTO FORMER WHILE DISKGROUP IS MOUNTED. 2 or greater for a disk group, you can create, copy, or move an Oracle ASM SPFILE into the disk group. md_restore – to restore metadata. 1) Oracle Automatic Storage Management (Oracle ASM) 2) Oracle ASM is a volume manager and file system. Just sharing with you an issue that faced this morning when I tried to drop a diskgroup. The first time I was asked to rename a diskgroup, I thought that it would be a trivial operation, but what should be an easy operation is not really that easy. 11gr2 mysteriously changing asm_diskgroup parameter. I have followed below steps to perform datafile move on physical standby database - 11gR2 version 1. byeee, byee bye 11g: drop diskgroup force including contents; -- Drop the diskgroup completely, to recreate the diskgroup. ASM (Automatic Storage Management) MANAGEMENT. Disks that were discovered but that have not yet been assigned to a disk group have a header status of either CANDIDATE or PROVISIONED. First dismount the TEST disk group from all the ASM instances except for one from where you will be dropping it. SQL> Restore asm metadata. Re: ASM disk mount and dismount ! anair-Oracle Jan 9, 2008 11:10 PM ( in response to 616848 ) please check metalink note Note. ASM - The minimum version of the ASM software that can access the disk group. Only way to do delete it using oracleasm is to unmount the diskgroup which is not possible since cluster depend on this diskgroup. See here if you don’t know why. ALTER DISKGROUP add disk "disk path" FORCE; NOTE: Please check if the disk is not attached to any diskgroup for doing a "FORCE" addition. 0 - Production With the Automatic Storage Management option SQL> alter diskgroup data drop disk DATA. ASM disk group attribute is set to 11. 0 - ProductionWith the Automatic Storage Management option[[email protected] bin. This will configure the on-boot properties of the Oracle ASM library driver. ASM provides the performance of raw I/O with the easy management of a file system. We can drop a diskgroup forcefully. Set Oracle environment to the ASM instance before executing the asmca command. You execute the following command to achieve this objective. The ALTER DISKGROUP statement will reject such an addition unless overridden with the FORCE option FORMER - Disk was once part of a disk group but has been dropped cleanly from the group. ASM (Automatic Storage Management) in Oracle ASM is used by Oracle to manage the diskgroups and diskgroups use to store to the data files. 00 col USABLE_CALC_GB format 999,999. How can I do this? Thanks for advice Marek Gregor. 1) Last updated on JANUARY 01, 2020. ASM instance shutdown. OCR : It is a file that manages cluster and Oracle RAC database configuration information. Dropping a disk group requires that it be mounted. ASM에서 disk 추가 1. Make sure that before you proceed with dropping the old disks, the rebalance of the additional disk had completed its tasks. Database Alert Log complains with ORA-1691:. DROP DISKGROUP ASM Bonjour, Env Oracle 10. But you'll find the state of the new added ASM diskgroup on the 2nd/3rd/. 4), Oracle 12C (DB and Grid. This behavior of placing the spfile of the ASM instance inside ASM disk group is now recommended by Oracle. ----- -- Miscellaneous ALTER Commands ----- -- Remove a disk from a DG: ALTER DISKGROUP dgroupA DROP DISK A5; -- Removing and adding disks in a single statement (Efficient for rebalancing): ALTER DISKGROUP dgroupA DROP DISK A6 ADD FAILGROUP fred DISK '/dev/rdsk/c0t8d0s2' NAME A9; -- Cancel a disk drop operation (Only if the drop operationis not. For normal redundancy in ASM, the voting disk requires a minimum of 3 ASM disks in the disk group. Normally Disk groups are mounted at ASM instance startup and dismounted at shutdown. com 4 Administering Oracle ASM Disk Groups. I have a spare disk (as a result of removing it from DATA diskgroup) and I will use it to create FRA disk group. When you request to remove a disk, Oracle ASM first rebalances the disk group by evenly relocating all file extents from the disk being removed to the other disks in the disk group. Mon Dec 09 13:42:48 2013. txt) or view presentation slides online. The disk would simply be dropped in ASM version 10g. Drop a directory ALTER DISKGROUP asm_group01 DROP DIRECTORY '+asm_group01/yourdir' FORCE; 7. An example of this command is: $ srvctl stop diskgroup -diskgroup diskgroup1 -node "mynode1,mynode2" -force. Similar behavior with External Redundancy:. 1)Create New CRS Diskgroup: SQL> create diskgroup OCR_VOTE2 external redundancy disk 'ORCL:OCR_VOTE2'; Diskgroup created. 4 and later Oracle Database Cloud Schema Service - Version N/A and later Oracle Database Exadata Express Cloud Service - Version N/A and later. v$asm_diskでの候補ディスクの確認. 추가한 disk를 fdisk를 사용하여 [linux LVM]으로 파티셔닝 # fdisk /dev/sdc -- 추가한 disk가 /dev/sdc인 경우 fdisk의 세부적인 파티셔닝 방. Check the existing voting disk details. 4 i simulated the scenario to drop the last active disk group. Thanks for contributing an answer to Database Administrators Stack Exchange! Please be sure to answer the question. Before rename the disks in disk group, you need to mount the disk group in restricted mode. ALTER DISKGROUP - Oracle. oracle 12c partition patch PDB performance pluggable RAC redolog rman SCRIPT scripts security SHELL script standby statistics tablespace temp undo. dg is dropped Step 2: Extract DDL (create diskgroup) command for RECO_FHDB from ASM alert log and replace redundancy clause and run create diskgroup command on ASM instance. Drop/remove a disk. ASM requires one Oracle instance with SGA(smaller SGA) and background process. Use asmca to create the new disks. 1, but still the 2Tb limit seemed to be in effect. Firstly we need to dismount the disk group from asm instance, using following query. Mon Dec 09 13:42:48 2013. Overview of Automatic Storage Management (ASM) Automatic Storage Management (ASM) simplifies administration of Oracle related files by allowing the administrator to reference disk groups rather than individual disks and files, which are managed by ASM. 추가한 disk를 fdisk를 사용하여 [linux LVM]으로 파티셔닝 # fdisk /dev/sdc -- 추가한 disk가 /dev/sdc인 경우 fdisk의 세부적인 파티셔닝 방. [[email protected] bin]$ crsctl start has CRS-4640: Oracle High Availability Services is already. Oracle 12c R1 ASM DiskGroup Add/Drop Disks - Duration: 1:06:43. linux 종료 후 disk 추가 하고 linux 시작 2. Step Wise Disk-Group Migration from DG01 to DG02 Scenario: DBTST is an Oracle11g single instance database on ASM which holds complete database in Disk Group named DG01 spread across 4*50 GB of Disks. This behavior of placing the spfile of the ASM instance inside ASM disk group is now recommended by Oracle. The statement can be used to resize individual disks, all disks in a failure group or all disks in the disk group. 2012-11-05. Automatic Storage Management (ASM) simplifies administration of Oracle related files by allowing the administrator to reference disk groups rather than individual disks and files, which ASM manages internally. 有一个SR里提了一个偏门的方法 是对 drop的DISK建一个临时diskgroup 然后drop 这个diskgroup ,不过不太推荐。The bug # 7225720 should be included in your 11. Renaming disk with 12c SQL> alter diskgroup data2 dismount; Diskgroup altered. SQL> alter diskgroup flash dismount; Diskgroup altered. The entire disk group is automatically dismounted, which means loss of data accessibility. Well as I said , supposed to run automated… cause at this point and time , during the day this is working properly but during the night we get per disk in the disk group a message similar to: asm-diskgroupname-data-001: map in use. We can drop a diskgroup forcefully. This is basically achievable because ASM distributes data across all disks in a disk group evenly, and assuming you have enough space, you can happily drop disks in a disk group and ASM will seamlessly migrate the data to the existing disks in the disk group. 9) drop disk 也不成,尝试 drop diskgroup. When I try to drop another ASM Disk from that Diskgroup, the command seems to be silently ignored, because 3 ASM Disks are required here to keep the 3 Voting Disks. ORA-15027: active use of diskgroup "TEST_RENAME" precludes its dismount (DBD ERROR: OCIStmtExecute) NOTE# Check the active files in ASM using the lsof. It is applicable : 1. Hoy os dejamos los pasos necesario para recuperar un disco de ASM restableciendolo a su diskgroup cuya cabecera se nos ha quedado en estado FORMER. 对于该ASM Disk的写失败在10g会自动从该Disk Group drop掉该Disk,前提是该Disk的丢失被容许。 Allocation Unit 每一个ASM Disk都被划分为许多个AU allocation units(单个AU 的大小在 1MB ~64MB,注意总是2的次方MB)。. We have archive on Production Server but we need to apply manually on DR server. Steps to Move ASM DATABASE FILES from ONE DISKGROUP TO ANOTHER. Diskgroup will remain available even if one storage array is lost. CREATING DISK GROUP. cp - to copy between ASM and local or remote destination. Oracle 12c R1 ASM DiskGroup Add/Drop Disks - Duration: 1:06:43. SQL> ALTER DISKGROUP data MOUNT;. By default, ASM drops a disk in 3. dropdg drops an existing disk group. To manually mount and dismount the diskgroups use the following statements, Syntax: ALTER DISKGROUP ALL or diskgroup_name MOUNT or DISMOUNT; Example 1 (Mount a specific diskgroup) SQL> Alter Diskgroup ASMIND Mount; Example 2 (Dismount all. If the database uses a recovery area, then change the recovery area location to the Oracle ASM disk group. SQL> alter diskgroup DATA undrop disks; Diskgroup altered. ASM has some header information that will have to be removed using a dd command 2. 4 two node cluster. SQL> drop diskgroup data including contents; Diskgroup dropped. And there was no space to create the new one to switch to image copy. How do I migrate ASM files between diskgroups? Answer: Moving data files from one ASM diskgroup to another diskgroup involves these steps: Step 1: Get the data file name: select file_name from dba_data_files; Step 2: Identify the target diskgroup to migrate to:. resize the RECO diskgroup. Create New Disk Groups FLASH2 & DATA2. Each template is a named set of attributes applied to files on the disk group. ##### To find ASM Diskgroup and Disks status set lines 132 col name format a14 col PATH format a33 select GROUP_NUMBER,NAME,STATE,TYP. Ensure that all Oracle ASM disks in a disk group have similar storage performance and availability characteristics. Below activities Need to be done from ROOT user. System-Generated Name You don't have to provide a name for the primary key, if you have no idea about the name of the primary key, you can let the database system generate one for you. How can I do this? Thanks for advice Marek Gregor. When creating or editing a disk group, this tab/panel lets you manage disk group template clauses submitted with the CREATE/ALTER DISKGROUP statement. One of the big selling points of ASM is the ability to reconfigure the storage online. 4 RH compatible Kernel When I was recently moving disks in and out of an ASM disk group, I hit this error:. 1 and 1126996. Using MOUNT and DISMOUNT options you can make one or more Disk. ASM disk group attribute is set to 11. NOTE: I have two disk group here i am using "DGRP2" disk group. Montar un Disk Group ALTER DISKGROUP DATA MOUNT; 7. Urgent Help needed with ASM Header Corruption - Q: When is an ASM disk header is read and updated ? Posted by PDSERVICE on Feb 05, 2016 In If you cannot recover the data by yourself, ask Parnassusdata, the professional ORACLE database recovery team for help. Votedisk : The voting disk is a file that manages information about node membership. If the previous steps had success and the TEST diskgroup can be successfully mounted (on each ASM instance), then drop the TEST diskgroup as follow. SQL> alter diskgroup flash dismount; Diskgroup altered. Run commands in SQL*Plus as shown in the following example. The DROP DISKGROUP statement lets you drop an Automatic Storage Management disk group along with all the files in the disk group. Moving temp files to new ASM diskgroup [[email protected] dbs]$ sqlplus / as sysdba. CREATE DISKGROUP DATA. Also it assumes that ASM is installed and is fully functional on Linux With ASMLibs. Adding disk group to ASM instance using ASMCA Here is the step by step process on how to add diskgroup to existing ASM instance via ASMCA. The diskgroup was unrecoverable and unusable. At this moment renaming an ASM Disk Group is not supported. Exclusion: No change in redundacy at any level. ASMB – ASM Background: It is responsible for successful establishment of communication channel between ASM instance & ASM clients. ASM provides the performance of raw I/O with the easy management of a file system. Adding new disk groups in ASM. Using MOUNT and DISMOUNT options you can make one or more Disk Groups available or unavailable. SQL> drop diskgroup DATA FORCE INCLUDING CONTENTS; Diskgroup dropped. Disk group components include disks, files, and allocation units. Disk groups can be rebalanced manually Using REBALANCE clause and you can modify the POWER clause default value. The disk would simply be dropped in ASM version 10g. You execute the following command to achieve this objective. When you drop a disk from a disk group, Oracle ASM rebalances the disk group by moving all of the file extents from the dropped disk to other disks in the disk group. Add/Remove Disks from ASM disk group on live database ASM will allow the adding and removing of volumes from a disk group while disk group is still in use by a database. an Oracle ASM disk group. ( excluding the local node) Suppose for 2 node rac, i have logged to node 2 and dismounted the diskgroup and ran the drop command on node 1. Using MOUNT and DISMOUNT options you can make one or more Disk Groups available or unavailable. I was under the impression this behaviour of ASM deserved some explanation. For normal redundancy in ASM, the voting disk requires a minimum of 3 ASM disks in the disk group. After mounting the diskgroup in restricted mode, we can now rename the diskname. For renaming a disk in ASM we must remount the Diskgroup in restricted mode. Files are allocated from disk groups. Making statements based on opinion; back them up with references or personal experience. For external redundancy, 1 voting disk is created. 5) Dismount the OLD Diskgroup in all Cluster Nodes that is not used by CRS : Login as SYSASM using SQLPLUS into ASM instance on One Node and run below Commands: alter diskgroup data dismount; Sample Command Output: SQL> SQL> alter diskgroup data dismount; Diskgroup altered. 3 RAC_DATA1 DISMOUNTED 4 RAC_DATA2 DISMOUNTED 3 RAC_DG1 MOUNTED 4 RAC_DG2 MOUNTED SQL> drop diskgroup RAC_DATA1; drop diskgroup RAC_DATA1 * ERROR at line 1: ORA-15039: diskgroup not dropped ORA-15001: diskgroup "RAC_DATA1" does not exist or is not mounted. As a part of migrating the ASM to a new SAN storage and would like to add the new disks to the existing the ASM disk group and plan to drop the old disks. break on DiskGroup skip 1 on report – set pages 255 select a. Move Non SYSTEM/SYSAUX datafiles to another ASM diskgroup The steps involved in moving a datafile from a diskgroup to another is as given below. diskgroup – Name of disk group to drop. by using below cmd. Oracle 12c R1 ASM DiskGroup Rebalance This video was recorded in February 2015. SQL> alter system set db_recovery_file_dest='+DATA' scope=spfile; System altered. Manually apply the archive log by moving archive from prodution ASM disk to DR AMS disk. Dismount and mount the disk group Drop the disk group. So added a new disk SQL> ALTER DISKGROUP DG1 ADD DISK '/dev/rdsk/c2t20120002AC000212d27s6' / And set the rebalance power to maximum SQL> ALTER DISKGROUP DG1 REBALANCE POWER 10 / But in some time, I got an WARNING in alert+ASM. Attempts to mount the disk group will render the following error: ORA-15032: not all alterations performed ORA-15040: diskgroup is incomplete ORA-15042: ASM disk “n” is missing. SQL> alter diskgroup flash dismount; Diskgroup altered. Topic: This post describes a few tips and techniques on how to recover ASM files from a dropped disk group and an example of how to ‘undrop’ an ASM disk group Context: This research stems from a recent case I have investigated where the data disk group of a test DB had all the disks with header_status ‘FORMER’: in other words the disk group had been dropped and hence could not be mounted. 0 people found this article useful This article was helpful. In the test we will simulate that disk DG_DISK1A is bad after a bad plate and will be replaced with disk DG_DISK4A. ASM_DISKGROUPS:-Name of the disk groups created. SQL> drop diskgroup dg-name force including contents; Can mount the disk in restricted mode, to rebalance faster. When scheduled RMAN backup kicked off the database came down. DISK 'ORCL:DATA1', 'ORDL:DATA2'; This command will create a diskgroup called DATA that contains the disks marked DATA1 and DATA2 by ASMlib. Drop a directory ALTER DISKGROUP asm_group01 DROP DIRECTORY '+asm_group01/yourdir' FORCE; 7. Mount/dismount ASM diskgroups - Oracle Database Script. I have dropped the disk from ASM diskgroup: > ALTER DISKGROUP DATA01 DROP DISK DISK1; Oracle did a rebalance operation and then dropped the disk. You can specify the INCLUDING CONTENTS clause if you also want to delete all files that are contained in the disk group. ----- -- Miscellaneous ALTER Commands ----- -- Remove a disk from a DG: ALTER DISKGROUP dgroupA DROP DISK A5; -- Removing and adding disks in a single statement (Efficient for rebalancing): ALTER DISKGROUP dgroupA DROP DISK A6 ADD FAILGROUP fred DISK '/dev/rdsk/c0t8d0s2' NAME A9; -- Cancel a disk drop operation (Only if the drop operationis not. ASM (Automatic Storage Management) in Oracle ASM is used by Oracle to manage the diskgroups and diskgroups use to store to the data files. How can I do this? Thanks for advice Marek Gregor. The disk would simply be dropped in ASM version 10g. Set the DB_CREATE_FILE_DEST and optional DB_CREATE_ONLINE_LOG_DEST_n initialization parameters to Oracle ASM disk groups. Since ASM couldn't write to the disk, the diskgroup was dismounted. Using MOUNT and DISMOUNT options you can make one or more Disk Groups available or unavailable. 1) Identify the datafile to be moved. The resize operation fails if there is not enough space. ASM:Automatic Storage Management, 是Oracle 主推的一种面向O数据库 Oracle ASM 详解 原创 Dave 最后发布于2010-02-21 14:13:00 阅读数 52794 收藏. We have archive on Production Server but we need to apply manually on DR server. SQL> alter diskgroup data drop disk disk1;. Oracle ASM Configuration Assistant enables you to configure or create Oracle ASM disk groups with the Configure ASM Disk Groups tab, as shown in Figure 9-4. Renaming ASM Disk group in Oracle 11gR2: The renamedg utility is new in Oracle 11gR2 and it's documented in the storage administrator’s guide. ORA-15260: permission denied on ASM disk group. If the disk(s) do not come back within this interval, ASM will initiate a forced drop of the disk(s), which will trigger a rebalance, in order to restore redundancy using the surviving disks. ASM has some header information that will have to be removed using a dd command 2. com 4 Administering Oracle ASM Disk Groups. Provisioned:DISK is not part of any diskgroup but cant be added with some platform dependency check 4. The data files you create under ASM are not like the normal database files, when you create a file you only need to specify the disk group that the files needs to be created in, Oracle will then create a stripped file across all the disks within the disk and carry out any redundancy required, ASM files are OMF files. ASM Cache 25165824 bytes. This number may change across disk group mounts. Although as per the standards, a backup of OCR happens every 4 hours but the same is preserved in ASM diskgroup, which in our case was dismounted and therefore the backup could not be. Managed file creation and deletion —Oracle ASM further reduces administrative tasks by enabling files stored in Oracle ASM disk groups to be Oracle Managed Files. The database instances that use Oracle ASM can continue operating while you administer disk groups. If you add an odd number of disks to the disk group, the data cannot be mirrored. Procedure to create new ASM Diskgroup. Our diskgroup was running low on disk space so we setup our normal maintenance to add more disk. The first ASM slide was about diskgroup compatibility, and I have a bit more to share than I said back then. md_restore - to restore metadata. Specify "one and two" arguments in the PHASE…. 1 is the default setting for the COMPATIBLE. The disk groups are dismounted at Oracle ASM instance shutdown. Type Disk Group Name and Select Disk Path to configure new ASM Disk Group and Click on OK to create new disk group. Below is syntax for the command. Alias ASM Filenames. As the name implies, we store our data in Disk Groups where one or more disks come together instead of a single disk. All previous versions have the parameter range of 0 to 11. When the disk groups are created with some redundancy say External, Normal or High then its redundancy cannot be changed. It also says: If you omit the failure group specification, then Oracle ASM automatically places each disk into its own failure group, except for disk groups containing disks on Oracle Exadata cells. It will open the GUI for ASM configuration assistant. ASM Disk Group Checks Enhanced. Ensure that all Oracle ASM disks in a disk group have similar storage performance and availability characteristics. Online migration of ASM disk groups from one SAN to another Below mentioned are the detailed steps from Database Admin perspective for migrating ASM disks from one SAN to another[from EMC to HP] in a RAC setup. oracle 12c partition patch PDB performance pluggable RAC redolog rman SCRIPT scripts security SHELL script standby statistics tablespace temp undo. list the contents, statistics and attributes of diskgroups, and files on them 5. Variable Size 1108320520 bytes. SQL> !date Mon Jul 4 21:38:28 IST 2011. Hello , Here is the below step to copy the asm spfile from non asm filesystem to asm filesystem. ORA-15027: active use of diskgroup “DG_DATA” precludes its dismount Cause: Diskgroup is having active datafiles. SQL> alter system set control_files='+DGRP2' scope=spfile; System altered. ALTER DISKGROUP disk_group_1 DROP DISK diska2;Disks can be resized using the RESIZE clause of the ALTER DISKGROUP statement. ASM diskgroups dismounted ASM instance shutdown Displays one row per each disk in each ASM disk group that are in use by the database instance alter diskgroup. 추가한 disk를 fdisk를 사용하여 [linux LVM]으로 파티셔닝 # fdisk /dev/sdc -- 추가한 disk가 /dev/sdc인 경우 fdisk의 세부적인 파티셔닝 방. Essa demonstração foi realizada na versão 12C, mas esta funcionalidade existe a partir da versão 11g. Once the data redundancy has been re-established, it simply updates the PST to say that the disk is no longer a member of that disk group. channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set including current SPFILE in backup set channel ORA_DISK_1: starting piece 1 at 28-AUG-18 channel ORA_DISK_1: finished piece 1 at 28-AUG-18. SQL> alter diskgroup data drop disk disk1;. If ASM determines that the disk group is mounted anywhere (in the clustered environment), this operation fails. Diskgroup will remain available even if one storage array is lost. SQL> alter diskgroup DGWEIXIU drop disk DGWEIXIU_0000; alter diskgroup DGWEIXIU drop disk DGWEIXIU_0000 * ERROR at line 1: ORA-15032: not all alterations performed. But when if you are doing this in a production database, then before adding we have to make sure that the disk is healthy. SQL> show parameter spfile. In the ASM instance: ===== alter diskgroup RAWDG01 add disk ‘/dev/did/rdsk. SQL> CREATE DISKGROUP DG1 NORMAL REDUNDANCY FAILGROUP failure_group_1 DISK 'ORCL:ASMD6' FAILGROUP failure_group_2 DISK 'ORCL:ASMD7'; 2 3 Diskgroup created. Como podemos ver en la primera línea de la consulta, este diskgroup contiene el ASMPARAMETERFILE, por lo tanto no podemos borrar el diskgroup hasta que no hayamos movido el ASMPARAMETERFILE a otro diskgroup o a una ubicación física fuera del ASM. Ensure that all Oracle ASM disks in a disk group have similar storage performance and availability characteristics. Create a DUMMY disk group. Moving Data files, parameter files from Local Linux filesystem to ASM (Online). The rebalance operation has to complete before it goes to a former status. ASM_DISKSTRING specifies an operating system-dependent value used by Automatic Storage Management to limit the set of disks considered for discovery. Dropping a disk group requires that it be mounted. 4 – Foreign - Disk contains data created by an Oracle product other than ASM. ora ## to: ## +NEWLOC/DBNAME/spfileDBNAME. At this point, even though it seems counter-intuitive, I clicked the Cancel button to complete the creation of the ASM instance, as there are no further steps required. dg is dropped Step 2: Extract DDL (create diskgroup) command for RECO_FHDB from ASM alert log and replace redundancy clause and run create diskgroup command on ASM instance. 1 Asm Diskgroup success Mount And Umount messages in alert. Using MOUNT and DISMOUNT options you can make one or more Disk Groups available or unavailable. Disk In Disk Groups And Monitor Re-Balance Operations In Oracle. This procedure will also work for diskgroups hosting OCR, Vote files and ASM spfiles. Files that are stored in Oracle ASM disk groups are called Oracle ASM files. DISMOUNTED - Disk group was cleanly dismounted by the Oracle ASM instance following a successful mount. Create a FLASH2 diskgroup. It divides files into 1 MB extents and extents get store in all disk available in disk group. This time I will create a new diskgroup in ASM. Migrate ASM diskgroups from one SAN to another SAN on SunOS - Oracle 11. But if a disk has failed and ASM has initiated rebalance, there may be a legitimate reason for concern.