A.ALTER SYSTEM SETAUDIT_TRAIL=DB B.ALTER SYSTEM SETAUDIT_TRAIL=DBDEFERRED C.ALTER SESSION SETAUDIT_TRAIL=DB D.ALTER SYSTEM SETAUDIT_TRAIL=DBSCOPE=SPFILE
A.startup B.startup mount C.alter database mount D.alter database open
A.PARALLEL Mode B.ARCHIVELOG Mode C.NOARCHIVELOG Mode D.RAC Mode