多项选择题
A. It requires relinking of the Oracle binary.
B. It does not require database instance shutdown.
C. It can detect conflicts between two online patches.
D. It is available for installing all patches on all platforms.
E. It works only in a single database instance environment.
单项选择题 You performed the RMAN database backup having a backupset key number 231 with the KEEP FOREVER option. After some days， you want to change the status of the database backup and you issued the following command： RMAN>CHANGE BACKUPSET 231 NOKEEP； What is the implication of this command？（）
单项选择题 WhichstatementdescribestheinformationreturnedbytheDBMS_SPACE.SPACE_USAGEprocedureforLOBspaceusage？（）
单项选择题 WhichstatementistrueregardingonlineredefinitionforthemigrationofBasicFileLOBstoSecureFileLOBs？（）