单项选择题

Your database is functional with peak load for one hour. You want to preserve the performance statistics collected during this period so that they can be used for comparison while analyzing the performance of thedatabase in the future. What action would you take to achieve this task？（）

A.Set the STATISTICS_LEVEL initialization parameter to ALL.
B.Create a baseline on a pair of snapshots that have the statistics of the peak-load period in the database.
C.Decrease the snapshot interval in the AWR to collect more number of snapshots during the peak-load period.
D.Set the snapshot retention period in the Automatic Workload Repository （AWR） to zero to avoid the automatic purging of the snapshots.

<上一题目录下一题>

热门试题

单项选择题Whichisthememoryareathatiscreatedwhenadedicatedserverprocessisstarted，andcontainsdataandcontrolinformationforthatserverprocess？（）

A.SGA
B.PGA
C.Shared Pool
D.Streams Pool

单项选择题You execute the following command to audit the database activities： SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL； What is the effect of this command？（）

A.One audit record is created for the whole session if user SCOTT successfully drops one or more tables in his session.
B.One audit record is created for every session when any user successfully drops a table owned by SCOTT.
C.One audit record is created for each successful DROP TABLE command executed by any user to drop tables owned by SCOTT.
D.One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to other users in his session.
E.One audit record is created for each successful DROP TABLE command executed in the session of SCOTT.

单项选择题Your database is not configured for session failover. Your tnsnames.ora file contains the following details： test.us.oracle.com= （DESCRIPTION= （ADDRESS_LIST= （LOAD_BALANCE=off）（FAILOVER=ON）（ADDRESS= （PROTOCOL=tcp）（HOST=test1-server）（PORT=1521））（ADDRESS= （PROTOCOL=tcp）（HOST=test2-server）（PORT=1521）））（CONNECT_DATA= （SERVICE_NAME=test.us.oracle.com））） Which feature is enabled in this case？（）

A.Load balancing
B.Instance failover
C.Database failover
D.Connect-time failover
E.Transparent Application Failover （TAF）

单项选择题YouwanttomovealltheobjectsoftheAPPSuserinthetestdatabasetotheDB_USERschemaoftheproductiondatabase.WhichoptionofIMPDPwouldyouusetoaccomplishthistask？（）

A.FULL
B.SCHEMAS
C.REMAP_SCHEMA
D.REMAP_DATAFILES
E.REMAP_TABLESPACE

多项选择题When you try to start the Database Control by using the emctl start dbconsole command the following error is displayed： TZ set to America New_york OC4J Configuration issue. u01 app oracle product 10.1.0 db_1 oc4j j2ee OC4J_DBConsole_orcl.us.oracle.com not found. Which two environment variables do you need to set appropriately to avoid such errors and start the Database Control successfully？（）

A.NLS_LANG
B.ORACLE_SID
C.ORACLE_HOME
D.ORACLE_BASE
E.LD_LIBRARY_PATH