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.
相关考题
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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） -
单项选择题
Therewasmediafailureandyouneedtocheckthedatafilesforanyblockcorruption.Whichoptionwouldyouusetocreateareportonanycorruptionsfoundwithinthedatabase？（）
A. the DBNEWID utility
B. the DBVERIFY utility
C. the ANALYZE command
D. the RMAN REPORT command
E. the RMAN CROSSCHECK command
F. the CHECK_OBJECT procedure of the DBMS_REPAIR package
