You set the recovery window to seven days and the backup optimization to ON using the CONFIGURE command of Recovery Manager （RMAN）. The most recent backup of the TOOLStablespace to disk was taken on January 3. The TOOLStablespace is read-only.On February 21， when you execute a command to back up all the tablespaces to disk， you find that RMAN backs up the TOOLS tablespace also， even though the contents of the tablespace have not changed after the backup on January 3. Because there are no changes made to the TOOLStablespace， you decide that the tablespace should not be backed up by RMAN. What can you do to skip backing up the TOOLStablespace without changing the current backup optimization setting？（）

A. create a hash cluster to store the data
B. create an index cluster to store the data
C. create a partitioned table to store the data
D. create a sorted hash cluster to store the data
E. create a heap table with rowid to store the data

A. Oracle Scheduler would write detailed information to the job log for each run of each job in the job class.
B. Oracle Scheduler would write detailed information to the job log for the first run of each job in the job class.
C. Oracle Scheduler would write detailed information to the job log for each run of only the first job in the job class.
D. Oracle Scheduler would write detailed information for all operations performed on all jobs in the job class.

A. A user table was lost at the specified time.
B. A redo log file was lost at the specified time.
C. The backup control file is on a faster disk than the current one.
D. The current control file has a different path compared with the intended time of recovery.
E. The current control file does not match the physical structure of the database at the intended time of recovery.