Hi,
Starting from 11gR2 if we look at asm alert.log we sometimes notice that "WARNING: failed to online diskgroup resource ora.DATA.dg (unable to communicate with CRSD/OHASD)" appear quite on-and-off.
Now what does this mean?
I did some googling and found that in 11R2 that " 11gR2 ASM does not depend on CRSD anymore; rather if OCR is located on ASM, ASM will start before CRSD while clusterware is coming up, and stops after CRSD while clusterware is going down. Due to the new startup sequence, ASM can not update diskgroup resource status in CRSD either during clusterware startup or shutdown, thus above message is logged"
How interesting?
So simply we can ignore these warning message if we are on 11gR2
Starting from 11gR2 if we look at asm alert.log we sometimes notice that "WARNING: failed to online diskgroup resource ora.DATA.dg (unable to communicate with CRSD/OHASD)" appear quite on-and-off.
Now what does this mean?
How interesting?
So simply we can ignore these warning message if we are on 11gR2
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