单项选择题
A.These are the data files that are corrupted.
B.There is no SYSAUX tablespace in your database
C.There is a readonly tablespace in your database.
D.These are the data files that cannot be recovered.
单项选择题 Youhaveareadonlytablespaceonreadonlymedia.Youwanttoperformamediarecoveryontheexistingdatafiles，butusingabackupcontrolfile.Thebackupcontrolfileindicatesthatthestatusofthereadonlytablespacewasread/writewhenthecontrolfilewasbackedup.Whatshouldyouconsider？（）
单项选择题 One of the tablespaces is readonly in your database. The loss of all control files forced you to recreate the control file. Which operation do you need to perform after recreating the control file and opening the database？（）
单项选择题 YoulostthePRODSTDtablespace，whichwasread/write.Thetablespacewasreadonlywhenthelastbackupwasperformed.Howwouldyourecoverthetablespace？（）