ASM ReBalance Power

Database administrators are sometimes kept busy adding and removing disks in the ASM Instance.

Adding and Removing the disks are quite easy but at the backend ASM has to redistribute the data evenly which is completely automatic.

By default ASM runs with the rebalance power of 1.

This can be altered by running the command 'alter diskgroup dg1 rebalance power 11;'

11 is the maximum and 1 is the default

Caution should be taken when running with power 11 as ASM takes high resource to process the request.

ASM Rebalance power can be altered at any time and it is change the power as and when the command is issued.

v$asm_operation helps to find the status of the operation.