单项选择题
A. The Oracle database will perform block checking for the index blocks only
B. The Oracle database will not perform block checking for any of the data blocks
C. The Oracle database will perform block checking for the default permanent tablespace only
D. The Oracle database will perform block checking for the data blocks in all user tablespaces
E. The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only
单项选择题 A database is running in ARCHIVELOG mode and regular backups are performed. A user receives the following error message： Which is the recommended sequence of operations you need to perform for the query successfully？（）
单项选择题 You are managing an ASM instance. You previously issued the following statements： ALTER DISKGROUP dg1 DROP DISK disk2； ALTER DISKGROUP dg1 DROP DISK disk3； ALTER DISKGROUP dg1 DROP DISK disk5； You want to cancel the disk drops that are pending for the DG1 disk group. Which statement should you issue？（）
多项选择题 WhichstatementsabouttheMEMORY_TARGETinitializationparameteraretrue？（）