单项选择题
A.Only the SET command must be within a RUN block.
B.All commands should be executed at the RMAN prompt.
C.All three commands must be within a single RUN block.
D.Only the RESTORE and RECOVER commands must be within a single RUN block.
单项选择题 When importing a table into a database，the import process performs these tasks： 1. Triggers are imported. 2. Data is imported. 3. New tables are created. 4. Indexes are built. 5. Any bitmap， functional， and/or domain indexes are built. 6. Integrity constraints are enabled on the new tables. Which option shows the tasks in the order in which they are performed？（）
多项选择题 ThedatabaseisrunninginNOARCHIVELOGmode.Adatafileislost.Whichtwoarevalidoptionsforrecover？（）
单项选择题 You received these error messages because the client cannot find the desired database： ORA-12198： TNS：could not path to destination ORA-12203： TNS：unable to connect to destination Which action would be appropriate in helping to resolve the errors？（）