How do I know if my ASM is compatible?

How do I know if my ASM is compatible?

Check the compatibility of ASM diskgroup in Oracle

  1. Check the compatibility of a ASM diskgroup. SELECT name AS diskgroup, substr(compatibility,1,12) AS asm_compat,
  2. Check the ASM attribute. column value for a20.
  3. Create diskgroup defines tha attribute.
  4. Alter command only used to increased value.

What is ASM compatibility?

Oracle 11g ASM includes two new compatibility attributes that determine the version of the ASM and database software that can use specific disk groups: COMPATIBLE. ASM – The minimum version of the ASM software that can access the disk group. In 11g, the default setting is 10.1. COMPATIBLE.

What is compatible ADVM?

COMPATIBLE. ADVM attribute determines whether the disk group can contain Oracle ADVM volumes. The value must be set to 11.2 or higher. Before setting this attribute, the COMPATIBLE.

How do I change Diskgroup compatibility?

After a disk group has been created, you can use the ALTER DISK GROUP SQL statement to change the compatibility attributes. The ALTER DISK GROUP SQL statement ensures that Oracle can advance the compatibility of the specified disk group before committing the change.

How do I find my ASM attributes?

You can display disk group attributes with the V$ASM_ATTRIBUTE view and the ASMCMD lsattr command. For an example of the use of the V$ASM_ATTRIBUTE view, see Example 6-1. For information about the lsattr command, see “lsattr”.

What is Disk_repair_time in ASM?

In other words, the DISK_REPAIR_TIME value is the acceptable time of duration during you need to fix the failure. This setting is also the countdown timer of ASM to drop the disk(s) that have been taken offline. The default setting for DISK_REPAIR_TIME is 3.6 hours.

How do I resize an ASM disk group?

Grow disk group through ASM: This command is run from the database node as sysasm: alter diskgroup DATA_DB03P resize all rebalance power 32; select * from gv$asm_operation; Once this completes, you are done!

How do I add a disk to ASM Diskgroup 19c?

Follow the below steps to add a disk to ASM diskgroup in Oracle 19c.

  1. Create ASM disk.
  2. Check the ASM disks.
  3. Add disk to ASM diskgroup.
  4. Check the rebalance status.
  5. Check the newly added disk in ASM Diskgroup.

How do I check ASM Diskgroup attributes?

You can display disk group attributes with the V$ASM_ATTRIBUTE view and the ASMCMD lsattr command.

What is ASM Diskgroup?

A disk group consists of multiple disks and is the fundamental object that Oracle ASM manages. Each disk group contains the metadata that is required for the management of space in the disk group. Disk group components include disks, files, and allocation units. Files are allocated from disk groups.

How do I view offline disks on ASM?

select group_number, name, state, type from v$asm_diskgroup;

  1. To check the asm instance is connected and running:
  2. To check the asm disks and their status:
  3. MISSING – Automatic Storage Management metadata indicates that the disk is known to be part of the Automatic Storage Management disk group, but no disk in the storage.

How do I add space to my ASM disk?

1. Create ASM disk. Get the Lun name from storage team….Follow the below steps to add a disk to ASM diskgroup in Oracle 19c.

  1. Create ASM disk.
  2. Check the ASM disks.
  3. Add disk to ASM diskgroup.
  4. Check the rebalance status.
  5. Check the newly added disk in ASM Diskgroup.

What is rebalance power in ASM?

Whenever there is a disk added/removed/resized, ASM starts to rebalance the data on the disks in the disk group. The power with which it does the rebalancing is the rebalancing power. The rebalance power defaults to the value of the ASM_POWER_LIMIT initialization parameter (default value = 1).

How do I create ASM Diskgroup in Oracle 12c?

  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 newly added disk in ASM Diskgroup.

How do I find my ASM version?

You can specify the -V option when starting asmcmd to display the asmcmd version number. After displaying the version number, asmcmd immediately exits.

How do you manually rebalance ASM disk groups?

You can manually rebalance the files in a disk group using the REBALANCE clause of the ALTER DISKGROUP statement. This would normally not be required, because Oracle ASM automatically rebalances disk groups when their configuration changes.

What is Lun in Oracle ASM?

Logical Unit Number (LUN) A LUN is a disk presented to a computer system by a storage array. Oracle recommends that you use hardware RAID functionality to create LUNs. Storage hardware RAID 0+1 or RAID5, and other RAID configurations, can be provided to Oracle ASM as Oracle ASM disks.

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