单项选择题
A. The backup would be marked as invalid.
B. The backup would be marked as obsolete.
C. The backup would be removed from the media.
D. The backup would be removed from the RMAN repository.
单项选择题 Thewarningandcriticalthresholdvalueshavebeensetto85%and97%，respectively，foroneofthetablespaces.Thecurrenttablespacespaceusageis54%.Youmodifythewarningthresholdtobe50%andcriticalthresholdtobe53%inDatabaseControl.Whichstatementistrue？（）
单项选择题 Exhibit： Using Database Control， you have scheduled a job to shrink the TRANStable residing on the TTtablespace. The job would run at 5：00 p.m. every Friday.When you examine the space usage of the table after the completion of the job， you find that the table has not been shrunk. What could have been the reason for this？（）
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？（）