ASM DISKGROUP CORRUPTION

ASM DISKGROUP CORRUPTION:

Raise SR with oracle support and share asm alert logs, crs logs.

Below steps don't try on production environment without confirmation from oracle support.

Step 1: Dismount the problem diskgroup from all nodes:

alter diskgroup TEST_DATA dismount;

Step 2: 

amdu -diskstring 'ORCL:ASM_TEST_DATA*' -dump 'TEST_DATA01' -noimage

Step 3:

alter diskgroup TEST_DATA CHECK NO REPAIR;

Step 4:

alter diskgroup TEST_DATA CHECK REPAIR