How do I add a disk to ASM Diskgroup?

  1. Create ASM disk. Get the Lun name from storage team. Lun Name – /dev/sda1.
  2. Check the ASM Disks, Check the newly added disk, $sudo oracleasm listdisks.
  3. Create the ASM Diskgroup. $sqlplus / as sysasm.
  4. Check the rebalance status. $sqlplus / as sysasm.
  5. Check the newly added disk in ASM Diskgroup.

How do I add a disk to Asmca Diskgroup?

Add disk to diskgroup using asmca

  1. It will open new window.
  2. Here no need to select Disk name & redundancy for disk group, as we have already specified it at the time of disk group creation. select the eligible disk, change Disk discovery path if required & click ok.
  3. Click on OK.
  4. FRA diskgroup now with space of 300GB.

What is ASM in Oracle 11gr2?

Oracle Automatic Storage Management (Oracle ASM) is an integrated, high-performance database file system and disk manager. You use Oracle ASM instead of an operating system file system to store your Oracle Database files and, optionally, other files.

How do you rebalance Diskgroup in ASM?

You can do it manually with ALTER DISKGROUP command with defining POWER clause. Higher value means more speed. If you use 0 then rebalance operation stop. You need to start the rebalance operation by setting the power greater than 0 value.

How do I add and drop disk to ASM?

select DISK_NUMBER,name ,PATH, MOUNT_DATE from v$asm_disk; Then drop the related disk. alter diskgroup DATA drop disk DATA_0032; You can check the drop and add disk operation status using the v$asm_operation view as follows.

How do I add a disk to ASM Diskgroup in Linux?

Question: How do I add a disk volume to an ASM diskgroup? Answer: Adding Disks to a Disk Group is done with the “alter diskgroup” command. ‘/devices/diska*’; • When a disk is added to the diskgroupand it is formatted and then rebalanced.

How do I check ASM disk?

To see all disks, use V$ASM_DISKGROUP instead. Contains one row for every Oracle ASM file in every disk group mounted by the Oracle ASM instance. In an Oracle ASM instance, contains one row for every active Oracle ASM long running operation executing in the Oracle ASM instance.

How do you add ASM disk to RAC?

Creating temporary Disk Group

  1. To create a new disk group use the below command. SQL> CREATE DISKGROUP TEST EXTERNAL REDUNDANCY DISK ‘[YOUR CANDIDATE DISK]’;
  2. Check if the diskgroup is created and mounted: SQL> SELECT STATE, NAME FROM V$ASM_DISKGROUP;
  3. If it is not mounted, mount it manually using the below command:

How do you resize a physical disk or LUN and an ASM Diskgroup?

The general steps are:

  1. resize LUN from storage.
  2. pick up new size from OS.
  3. in rolling fashion, shutdown ASM instances.
  4. Only when all ASM have been recycled, you should resize the said disk on 1 ASM instance.

How do I drop a disk from ASM Diskgroup?

Remove disk from ASM diskgroup. SQL> alter diskgroup ORA_DATA drop disk ORA_DATA_0010 rebalance power 100; 3….Remove Disk from ASM diskgroup in Oracle 19c.

  1. Check the ASM disks in ASM DiskGroup.
  2. Remove disk from ASM diskgroup.
  3. Check the rebalance status.
  4. Check the dropped disk from ASM Diskgroup.
  5. Delete the ASM Disk.

How do I check ASM rebalance?

Query to V$ASM_OPERATION shows that the status of ASM diskgroup rebalance (using power setting 0) is waiting and the rebalance does not finish.

  1. Query to V$ASM_OPERATION shows that the status of ASM diskgroup rebalance (using power setting 0) is waiting and the rebalance does not finish.
  2. Applies to:
  3. Symptoms.
  4. Cause.

How do I drop a disk from an ASM Diskgroup?

How to add a disk to the ASM diskgroup?

Following step by step guide will help you to add disk to oracle ASM diskgroup. // With the help of createdisk oracle utility, we will create oracle ASM disk. ( as root user ) Following command will create ASM disk: RMAN is the name of newly created ASM disk with path ‘/dev/mapper/mpathg’.

How to drop a disk from an ASM instance?

DROP DISKGROUP TESTDG; — (from the ASM instance, which the diskgroup is still mounted). If you try to drop the diskgroup, without dismounting the diskgroup from all instance, except one, then you will hit the error.

Do you need asmlib to add a disk to a database?

But when if you are doing this in a production database, then before adding we have to make sure that the disk is healthy. We will follow below steps to confirm that the disk is healthy. NOTE – If this is Solaris or HP, then the 1st step is not required, as it doesn’t need ASMLIB.