单项选择题
You executed the following command in Recovery Manager （RMAN）：
RMAN> RESTORE CONTROLFILE；
Which operation must you perform before this command is executed？（）
A. back up the control file to trace
B. bring database to the MOUNT state
C. open a connection to the RMAN recovery catalog， which contains the RMAN metadata for the target database
D. set the database ID （DBID）， but only if the DB_NAME parameter associated with the target database is unique in the recovery catalog
相关考题
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单项选择题
A user executes a query on the EMPtable， which contains thousands of rows， to get details about employees in one of the departments. The user receives the following error： SQL> SELECT ename FROM emp WHERE deptno=10 ORDER BY sal； SELECT ename FROM emp WHERE deptno=10 ORDER BY sal ERROR at line 1： ORA-01157： cannot identify/lock data file 201 - see DBWR trace file ORA-01110： data file 201：’/u01/app/oracle/oradata/orcl/temp01.dbf’ What is a possible reason？（）
A. The tempfile belonging to the default temporary tablespace is missing.
B. The database is opened in restricted mode， so queries are not allowed
C. The default temporary tablespace required to execute the query is offline.
D. The default temporary tablespace required to execute the query is dropped.
E. The default temporary tablespace required to execute the query is read-only. -
多项选择题
You have created a resource plan， PROD_DB_PLAN， with the following consumer groups with the respective plan directives： Consumer group SALESwith CPU_P1as 60 and DEGREE_OF_PARALLELISMas 4. Consumer group MARKETwith CPU_P1as 20. Consumer group DEVwith CPU_P1as 20. Consumer groupOTHERSwith CPU_P1as 0 and CPU_P2as 100. Which two statements are correct in this scenario？（）
A. The maximum degree of parallelism for the members of the consumer groups is 4.
B. The CPU allocation will always be equal for the consumer groups MARKET and DEV.
C. The OTHERS consumer group would get 100% of the CPU if there are unused level 1 CPU resources.
D. The SALES and MARKET consumer groups would get 100% of the CPU if there are unused level 2 CPU resources.
E. The maximum degree of parallelism for the members of the consumer group SALES is 4 with no restriction for the remaining groups. -
单项选择题
Youfindthattheexecutiontimeofreportsinyourdatawarehouseapplicationissignificantlyhigh.Yoususpectthelackofindexestobethereasonforthedegradationinperformance.Whichadvisorycomponentwouldyoureferto，inordertodeterminetheappropriateindexes？（）
A. Memory Advisor
B. Segment Advisor
C. SQL Access Advisor
D. Automatic Workload Repository （AWR）
E. Automatic Database Diagnostic Monitor （ADDM）
