单项选择题
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？（）
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？（）
单项选择题 TheSCOTTuserhasanindexontheITEM_DESCcolumnoftheITEMtable.Aspartoftheyear-endingtask，SCOTTupdatestheITEM_DESCcolumnformostoftherowsintheITEMtable.Howdoesthischangetothetableaffecttheindex？（）