ImmediatelyafteraddinganewdisktoorremovinganexistingdiskfromanAutomaticStorageManagement（ASM）instance，youfindthattheperformanceofthedatabasedecreasesinitially，untiltheadditionorremovalprocessiscompleted.Performancethengraduallyreturnstonormallevels.Whichtwoactivitiescouldyouperformtomaintainaconsistentperformanceofthedatabasewhileaddingorremovingdisks？（）

A.increasethenumberofcheckpointprocesses

B.definethePOWERoptionwhileaddingorremovingthedisks

C.increasethenumberofDBWRprocessesbysettingupahighervalueforDB_WRITER_PROCESSES

D.increasethenumberofslavedatabasewriterprocessesbysettingupahighervaluefor DBWR_IO_SLAVES

E.increasethenumberofASMRebalanceprocessesbysettingupahighervalueforASM_POWER_LIMITduringthediskadditionorremovalprocess