单项选择题
You executed the following command to perform a backup of the USERS tablespace：
SQL> ALTER TABLESPACE users BEGIN BACKUP；
ALTER TABLESPACE users BEGIN BACKUP *
ERROR at line 1：
ORA-01123： cannot start online backup； media recovery not enabled
What could be the reason for this error（）
A.The MTTR Advisor is disabled.
B.The database is in NOARCHIVELOG mode.
C.The tablespace is already in backup mode.
D.The Flash Recovery Area is not configured.
相关考题
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单项选择题
WhichstatementistrueaboutawholeconsistentdatabasebackuponadatabaserunninginARCHIVELOGmode（）
A.The backup will consist of used data blocks only.
B.The database must be shut down to accomplish the backup.
C.The backup can be accomplished without shutting down the database.
D.The backup will contain all database files that have never been backed up. -
单项选择题
Your test database is configured to run in NOARCHIVELOG mode. One of the data files in the USERStablespace is lost due to a media failure. You notice that all the online redo logs have been overwritten since the last backup. What would you do to recover the data file（）
A.Take the USERS tablespace offline and re-create the lost data file.
B.Shut down the instance， restore the data file from the last consistent backup， and restart the databaseinstance.
C.Shut down the instance， restore all the database files from the last consistent backup， and restart thedatabase instance.
D.Take the USERS tablespace offline， restore all the data files of the USERS tablespace from the lastconsistent backup， and make the tablespace online. -
单项选择题
The database is running in ARCHIVELOG mode. Examine the initialization parameters and theirvalues set to enable archiving on your database server： LOG_ARCHIVE_FORMAT = arch_%t_%s_%r.arc LOG_ARCHIVE_DEST_1 = ’LOCATION = /disk1/archive’ DB_RECOVERY_FILE_DEST = ’/u01/oradata’ DB_RECOVERY_FILE_DEST_SIZE = 20G Which statement is true regarding the archived redo log files（）
A.It will be created on the local file system.
B.It will be created only in the Flash Recovery Area.
C.It will be created in the location specified by the LOG_ARCHIVE_DEST_1 parameter and the defaultlocation $ORACLE_HOME/dbs.
D.It will be created in the location specified by the LOG_ARCHIVE_DEST_1 parameter and locationspecified by the DB_RECOVERY_FILE_DEST parameter.
