问题：

[多选]

Examine the commands executed to monitor database operations:
$> conn sys oracle/oracle@prod as sysdba
SQL > VAR eid NUMBER
SQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (‘batch_job’ , FORCED_TRACKING => ‘Y’);
Which two statements are true?（）

A . Database operations will be monitored only when they consume a significant amount of resource.
B . Database operations for all sessions will be monitored.
C . Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + tuning.
D . Only DML and DDL statements will be monitored for the session.
E . All subsequent statements in the session will be treated as one database operation and will be monitored.