凡概念或规则都有正例和反例。（)A．正确B．错误

A. Setting a metric threshold

B. Implementing Database Resource Manager

C. Enabling resumable timeout for user sessions

D. Decreasing the value of the IDLE_TIME resource limit in the default profile

tions. Your requirement is to automatically terminate these blocking sessions when they remain idle for a specified amount of time.How would you accomplish this task？（）

A. Set metric threshold

B. Implement Database Resource Manager

C. Enable resumable timeout for user sessions

D. Add directives to Automatic Database Diagnostic Monitor (ADDM)

n. Subsequently, you execute the following procedure which results in an error:SQL> EXECUTE dbms_resources_manager.validate_pending_area ();What could be the reason？（）

A. The pending area is automatically submitted after the plan creation

B. The procedure must be executed before creating the resources plan directive

C. The SYS_GROUP resource consumer group is not included in the resource plan directive

D. The OTHER_GROUPS resources consumer group is not included in the resource plan directive

n.Subsequently, you execute the following procedure which results in an error:SQL> EXECUTE dbms_resources_manager.validate_pending_area ();What could be the reason？（）

A. The pending area is automatically submitted after the plan creation

B. The procedure must be executed before creating the resources plan directive

C. The SYS_GROUP resource consumer group is not included in the resource plan directive

D. The OTHER_GROUPS resources consumer group is not included in the resource plan directive

A. Only one window can be open at any given time

B. Consumer groups are associated with windows

C. Windows work with job classes to control resource allocation

D. The database service name must be provided during windows creation

E. Windows can automatically start job or change resource allocation among jobs for various time periods.

A. Only one window can be open at any given time

B. Consumer groups are associated with windows

C. Windows work with job classes to control resource allocation

D. The database service name must be provided during windows creation

E. Windows can automatically start job or change resource allocation among jobs for various time periods.

A. If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that pdb.

B. In a PDB plan, subplans may be used with up to eight consumer groups.

C. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the cdb.

D. If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.

E. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.

A. setting idle timeout limits on resource plans

B. saving storage space by using compressed backup sets

C. creating jobs that will run automatically at a scheduled time

D. assigning priorities to jobs to manage access to system resources

E. creating alerts to perform notification when tablespaces are low on available space resources

A. Maximum Undo per consumer group

B. Maximum Idle time

C. Parallel server limit

D. CPU

E. Exadata I/O

F. Local file system I/O

A. You can use RMAN stored scripts

B. Recovery is faster if data is stored in catalog in addition to the control file

C. You can store backup information of all registered databases in one place

D. Database backups are automatically deleted when they are older than the specified time period