多项选择题
A. The data file backup is done with multiple channels
B. The data files is in the read-write mode after being backed up in the read only mode
C. The backup was taken after the data files was taken offline-normal or is in the read only mode
D. The data file backup complies with the back retention policy and the backup duplexing feature
多项选择题 The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration. You executed the following command to startup the Automatic Storage Management （ASM） instance. SQL> STARTUP； Which two activities are performed during a successful start up operation？（）
多项选择题 You are using the control file to maintain information about the database backups that are being performed by Recovery Manager (RMAN).Identify two scenarios is which you must have a recovery catalog. （）(Choose two.)
单项选择题 View the Exhibit and note the contents of V$DIAG_INFO. Which statement is true about the ADR?（）