Immediately after adding a new disk to or removing an existing disk from an ASM instance, you find that the performance of the database goes down initially until the time the addition or removal process is completed, and then gradually becomes normal. Which two activities would you perform to maintain a consistent performance of the database while adding or removing disks?（）
ADefine the POWER option while adding or removing the disks
BIncrease the number of ARB processes by setting up a higher value for ASM_POWER_LIMIT.
CIncrease the number of DBWR processes by setting up a higher value for DB_WRITER_PROCESSES
DIncrease the number of slave database writer processes by setting up a higher value for DBWR_IO_SLAVES
