A.ALTER SYSTEM SET AUDIT_TRAIL=DB B.ALTER SYSTEM SET AUDIT_TRAIL=DB DEFERRED C.ALTER SESSION SET AUDIT_TRAIL=DB D.ALTER SYSTEM SET AUDIT_TRAIL=DB SCOPE=SPFILE
A.在打印工具里面校準打印頭 B.更換墨盒或噴頭 C.重裝打印機驅動 D.打印機電路板故障需要送修
A.DBA_TABLES B.V$DATAFILE C.V$INSTANCE D.V$DATABASE