單項(xiàng)選擇題

In which of the following scenarios is a tablespace recovery required？（）

A. when recovering a lost read-only tablespace from a read-only tablespace backup
B. when recovering a lost read-only tablespace from a read-write tablespace backup when the database is running in ARCHIVELOG mode
C. when recovering a lost read-only tablespace from a read-write tablespace backup when the database is running in NOARCHIVELOG mode and the changes in the online redo log files have been overwritten
D. when recovering a lost read-only tablespace from a read-only tablespace backup using the backup of the control file， the control file was created using the ALTER DATABASE BACKUP CONTROLFILE TO TRACE statement， and this statement was issued when the tablespace was read-only

你可能感興趣的試題

單項(xiàng)選擇題

Your database is configured in NOARCHIVELOG mode. Due to a media failure， you have lost one of the datafiles belonging to a read-only tablespace. You know that the last backup was performed after the tablespace was made read-only. Which action should you take to restore the missing datafile in the minimum amount of time？（）

A. Restore all the datafiles from the backup.
B. Restore only the lost datafile from the backup.
C. Restore all the datafiles for the lost tablespace from the backup.
D. Restore all the datafiles for the lost tablespace and all the SYSTEM and SYSAUX datafiles from the backup.

單項(xiàng)選擇題

Your database is in ARCHIVELOG mode. On Friday evening， you perform an online database backup by using the BACKUP DATABASE command at the Recovery Manager （RMAN） prompt and close the
database. On Monday， the System Administrator informs you about the failure of two hard disks. One of the lost disks contains two datafiles， HR1.DBF and HR2.DBF， both of which belong to a read/write tablespace named HR. The disk also contains a datafile， USERS.DBF， which belongs to a read/write tablespace named USERS. You need to restore and recover the database backup that was performed on Friday evening. After mounting the database， you issue the following RMAN commands：
RMAN>RESTORE DATABASE；
RMAN>RECOVER DATABASE；
After successfully executing these RMAN commands， you issue the following statement using SQL*Plus：
SQL>ALTER DATABASE OPEN；
You receive the following errors when attempting to open the database：
ORA-01157： cannot identify/lock data file 10 see DBWR trace file
ORA-01110： data file 10： ’D：\USERS.DBF’
What is the cause of these errors？（）

A. The USERS.DBF datafile is corrupted and cannot be restored by RMAN.
B. The USERS.DBF datafile was not backed up using the RMAN BACKUP DATABASE command.
C. The USERS.DBF datafile was not restored using the RMAN RESTORE DATABASE command.
D. The USERS.DBF datafile was not recovered using the RMAN RECOVER DATABASE command.

In which of the following scenarios is a tablespace recovery required？（）

你可能感興趣的試題

In which of the following scenarios is a tablespace recovery required？（）