What is the correct procedure to abandon diskgroup asm is rac?

Hello

I would like to table a diskgroup in asm to the CCR? What is the correct procedure?
1 should I disassemble the diskgroup firstly in 2 node?
2 alter diskgroup xxx drop command to run in the 2 nodes or just 1 node?
3. after droping command, is there any other procedures to be done?

No matter what doc to follow?

Thank you

Andrew

Hi André,.

860523 wrote:
Thank you very much. Oracle 10.2, if I unmount the diskgroup, I want something offline, or what is the procedure before changing disgroup xxx disassemble?

You MUST remove (using DBCA) or move (using RMAN) all databases stored on the diskgroup (if exists) before giving up DISKGROUP.
(1) check if there are any database using the DISKGROUP.
The query above must return no rows.

SQL>  SELECT D.NAME,C.INSTANCE_NAME,C.DB_NAME,C.STATUS
     FROM GV$ASM_DISKGROUP D , GV$ASM_CLIENT C
     WHERE D.GROUP_NUMBER=C.GROUP_NUMBER
     AND D.NAME = '';  

no rows selected

If the above query returns rows you remove and stop must all first trial or move the database to an another DISKGROUP.

(2) remove the Diskgroup all instances of ASM, except one.

ALTER DISKGROUP  DISMOUNT;

(3) decline diskgroup of the ASM instance, that the diskgroup is still mounted

DROP DISKGROUP ; -- If no files on DISKGROUP
DROP DISKGROUP  INCLUDING CONTENTS; - If exits files on DISKGROUP

Just it.

Kind regards
Levi Pereira

Tags: Database

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