OCP-1Z0-053-V12.02-184题
2013-09-18 23:52
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184.Which RMAN backup command is used to create the block-change tracking file?
A. alter database create block change tracking file
B. alter database enable block change file
C. alter database enable block change tracking using file ,,/ora01/opt/ block_change_tracking.fil
D. alter system enable block change tracking using file '/ora01/opt/block_ change_tracking.fil'
E. alter system block change tracking on
Answer: C
答案解析:
参考:/article/1629017.html
You can enable block change tracking when the database is either open or mounted.
To enable block change tracking:
Start SQL*Plus and connect to a target database with administrator privileges.
Ensure that the
SHOW PARAMETER DB_CREATE_FILE_DEST
If the parameter is not set, and if the database is open, then you can set the parameter with the following form of the ALTER SYSTEM statement:
ALTER SYSTEM SET
DB_CREATE_FILE_DEST = '/disk1/bct/'
SCOPE=BOTH SID='*';
Enable block change tracking.
Execute the following
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;
You can also create the change tracking file
in a location that you choose yourself by using the following form of SQL statement:
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING
USING FILE '/mydir/rman_change_track.f' REUSE;
The
官方参考:http://docs.oracle.com/cd/E16655_01/backup.121/e17630/rcmbckba.htm#BRADV8125
A. alter database create block change tracking file
B. alter database enable block change file
C. alter database enable block change tracking using file ,,/ora01/opt/ block_change_tracking.fil
D. alter system enable block change tracking using file '/ora01/opt/block_ change_tracking.fil'
E. alter system block change tracking on
Answer: C
答案解析:
参考:/article/1629017.html
You can enable block change tracking when the database is either open or mounted.
To enable block change tracking:
Start SQL*Plus and connect to a target database with administrator privileges.
Ensure that the
DB_CREATE_FILE_DESTinitialization parameter is set.
SHOW PARAMETER DB_CREATE_FILE_DEST
If the parameter is not set, and if the database is open, then you can set the parameter with the following form of the ALTER SYSTEM statement:
ALTER SYSTEM SET
DB_CREATE_FILE_DEST = '/disk1/bct/'
SCOPE=BOTH SID='*';
Enable block change tracking.
Execute the following
ALTER DATABASEstatement:
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;
You can also create the change tracking file
in a location that you choose yourself by using the following form of SQL statement:
ALTER DATABASE ENABLE BLOCK CHANGE TRACKING
USING FILE '/mydir/rman_change_track.f' REUSE;
The
REUSEoption tells Oracle Database to overwrite any existing block change tracking file with the specified name.
官方参考:http://docs.oracle.com/cd/E16655_01/backup.121/e17630/rcmbckba.htm#BRADV8125
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