单选题By default, checkpoints happen at least as often as（）.ARedo log switches. BUPDATE statements are issued against the database. CThe SYSTEM tablespace is accessed. DSMON coalesces free space in a tablespase.
单选题
By default, checkpoints happen at least as often as（）.
A
Redo log switches.
B
UPDATE statements are issued against the database.
C
The SYSTEM tablespace is accessed.
D
SMON coalesces free space in a tablespase.
参考解析
解析：
暂无解析
相关考题：
Evaluate the following command and its output： SQLSELECT * FROM dba_temp_free_space； TABLESPACE_NAME TABLESPACE_SIZE ALLOCATED_SPACE FREE_SPACE LMTEMP 250609664 101048576 149561088 Which two statements correctly interpret the output？（）A、 FREE_SPACE indicates only the space that is currently unallocated.B、 ALLOCATED_SPACE indicates only the space currently allocated and in use.C、 FREE_SPACE indicates only the space that is currently allocated and available for reuse.D、 ALLOCATED_SPACE indicates both the space currently allocated and used，and the space that is available for reuse.E、 FREE_SPACE indicates both the space that is currently allocated and available for reuse，and the space that is currently unallocated.
Which two statements regarding the LOGGING clause of the CREATE TABLESPACE... statement are correct？（）A、This clause is not valid for a temporary or undo tablespace.B、If the tablespace is in the NOLOGGING mode，no operation on the tablespace will generate redo.C、The tablespace will be in the NOLOGGING mode by default，if not specified while creating a tablespace.D、The tablespace-level logging attribute can be overridden by logging specifications at the table，index， materialized view，materialized view log，and partition levels.
During regular database operation, which background process will take smaller blocks of free space in a dictionary-managed tablespace and move things around to make bigger pieces of free space?（）A、DBW0 B、LGWR C、ARCH D、SMON E、PMON
You are maintaining your database in Oracle10g. You are not using the recovery catalog to maintain the backup information of your database. Which file can be used as a repository to store information regarding the RMAN backup？（）A、 online redo log filesB、 alert log filesC、 control fileD、 datafiles associated with the SYSTEM tablespace
You are attempting to clear an unarchived redo log file. In order to manually enact a log switch, which of the following statements is appropriate?（）A、ALTER DATABASE B、ALTER SYSTEM C、ALTER USER D、ALTER REDO LOG
Because of hardware failure， you decided to drop a redo log member from the database. Which condition should be met to drop a redo log file？（）A、 The redo log file should belong to an active group.B、 The redo log file should belong to an inactive group.C、 The redo log file should belong to the current group.D、 The redo log file can be dropped only if all the transactions are stopped.E、 Before a redo log file is dropped， it should be deleted from the operating system （OS）.
Which two statements regarding the LOGGING clause of the CREATE TABLESPACE. .. statement are correct？（）A、This clause is not valid for a temporary or undo tablespace.B、If the tablespace is in the NOLOGGING mode， no operation on the tablespace will generate redo.C、The tablespace will be in the NOLOGGING mode by default， if not specified while creating a tablespace.D、The tablespacelevel logging attribute can be overridden by logging specifications at the table， index， materialized view， materialized view log， and partition levels.
You configured the Flash Recovery Area （FRA） for your database. The database instance is runningin ARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area. Which two files are removed automaticallyif the space is required in the FRA as per the retention policy（）A、flashback log filesB、backups that have become obsoleteC、copies of the data files and control filesD、archived redo log files that have multiple copies in a different archive location and not backed up
You are attempting to increase the checkpoint interval on your database. Each of the following choices will affect the duration and/or frequency of checkpoints, except one. Which is it?（）A、Size of redo logs B、Number of datafiles C、LOG_CHECKPOINT_INTERVAL D、LOG_CHECKPOINT_TIMEOUT
By default, checkpoints happen at least as often as（）.A、Redo log switches. B、UPDATE statements are issued against the database. C、The SYSTEM tablespace is accessed. D、SMON coalesces free space in a tablespase.
Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancel/x7fbased recovery？（）A、You find that one of the redo log members in each redo log group is lost.B、You find that a data file that belongs to the USERS tablespace is damaged.C、You find that a data file that belongs to the SYSTEM tablespace is damaged.D、You find that the current redo log group is damaged and is not available for recovery.E、You realized while performing a recovery that an archived redo log file needed for recovery is lost.
Examine the commands executed in a DBA session：SQL CREATE BIGFILE TABLESPACE MRKT 2 DATAFILE ’/u01/app/oracle/oradata/orcl/mrkt.dbf’ size 10M LOGGING 3 EXTENT MANAGEMENT LOCALSEGMENT SPACE MANAGEMENT AUTO； Tablespace created. SQL ALTER DATABASE DEFAULT TABLESPACE MRKT； Database altered. Which two statements are trueregarding the MRKT tablespace（）A、No more data files can be added to the tablespace.B、Segment space is managed by free lists in the tablespace.C、A user created without being assigned a default tablespace uses this tablespace.D、The tablespace can be dropped with the current setting with segments present in it
Which statement is true regarding checkpoints and recovery？（）A、A checkpoint defines the highest system change number （SCN）.B、All redo entries higher or at the SCN are known to be written to the data files.C、Only the redo records containing SCNs higher then the checkpoint need to be applied during recovery.D、The LOG_CHECKPOINT_INTERVAL initialization parameter specifies the amount of time between incremental checkpoints.
You work as a database administrator for Supportcenter.cn. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database. Which method would you use to recover the data file？（）A、Restore all the data files and open the databaseB、Create the data file and perform tablespace recoveryC、No need to restore any file， just recover the databaseD、Restore only the system data file and recover the databaseE、Restore only lost date file and performtablespacerecovery
Your database is set in NOARCHIVELOG mode and is backed up every night. There are 10 redo log groups on the database， each with three members， making a total of 30 redo log files. At lunchtime the server unexpectedly gets shut down. Upon restarting you notice that the data file belonging to the SYSTEM tablespace has become corrupted. You also notice that there have been 15 log switches during the day. Which solution should you use to recover as much committed data as possible？（）A、Restore the data file for the SYSTEM tablespace then open the database. B、Restore all redo logs form last night's backup, then restart the database. C、Perform a complete restore of all files from last night's backup. Data entered into the database today must be reentered. D、Mount the instance, take the SYSTEM tablespace offline, open the database, and then restore the data file, recover it, and bring the tablespace online.
View the Exhibit.You executed the following command to perform a backup of the USERS tablespace： RMAN BACKUP TABLESPACE USERS； Which three types of files are backed up？ （）A、 all the data files belonging to the USERS tablespaceB、 password fileC、 online redo log filesD、 the current control fileE、 archived redo log filesF、 the current server parameter fileG、 data files belonging to the USERS tablespace and all the default tablespaces
多选题View the Exhibit.You executed the following command to perform a backup of the USERS tablespace： RMAN BACKUP TABLESPACE USERS； Which three types of files are backed up？ （）Aall the data files belonging to the USERS tablespaceBpassword fileConline redo log filesDthe current control fileEarchived redo log filesFthe current server parameter fileGdata files belonging to the USERS tablespace and all the default tablespaces
多选题Examine the commands executed in a DBA session：SQL CREATE BIGFILE TABLESPACE MRKT 2 DATAFILE ’/u01/app/oracle/oradata/orcl/mrkt.dbf’ size 10M LOGGING 3 EXTENT MANAGEMENT LOCALSEGMENT SPACE MANAGEMENT AUTO； Tablespace created. SQL ALTER DATABASE DEFAULT TABLESPACE MRKT； Database altered. Which two statements are trueregarding the MRKT tablespace（）ANo more data files can be added to the tablespace.BSegment space is managed by free lists in the tablespace.CA user created without being assigned a default tablespace uses this tablespace.DThe tablespace can be dropped with the current setting with segments present in it
单选题Which statement is true regarding checkpoints and recovery？（）AA checkpoint defines the highest system change number （SCN）.BAll redo entries higher or at the SCN are known to be written to the data files.COnly the redo records containing SCNs higher then the checkpoint need to be applied during recovery.DThe LOG_CHECKPOINT_INTERVAL initialization parameter specifies the amount of time between incremental checkpoints.
多选题Which two statements regarding the LOGGING clause of the CREATE TABLESPACE. .. statement are correct？（）AThis clause is not valid for a temporary or undo tablespace.BIf the tablespace is in the NOLOGGING mode， no operation on the tablespace will generate redo.CThe tablespace will be in the NOLOGGING mode by default， if not specified while creating a tablespace.DThe tablespacelevel logging attribute can be overridden by logging specifications at the table， index， materialized view， materialized view log， and partition levels.
多选题Which two statements regarding the LOGGING clause of the CREATE TABLESPACE... statement are correct？（）AThis clause is not valid for a temporary or undo tablespace.BIf the tablespace is in the NOLOGGING mode，no operation on the tablespace will generate redo.CThe tablespace will be in the NOLOGGING mode by default，if not specified while creating a tablespace.DThe tablespace-level logging attribute can be overridden by logging specifications at the table，index， materialized view，materialized view log，and partition levels.
单选题You are maintaining your database in Oracle10g. You are not using the recovery catalog to maintain the backup information of your database. Which file can be used as a repository to store information regarding the RMAN backup？（）A online redo log filesB alert log filesC control fileD datafiles associated with the SYSTEM tablespace
单选题You work as a database administrator for Supportcenter.cn. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database. Which method would you use to recover the data file？（）ARestore all the data files and open the databaseBCreate the data file and perform tablespace recoveryCNo need to restore any file， just recover the databaseDRestore only the system data file and recover the databaseERestore only lost date file and performtablespacerecovery
单选题Because of hardware failure， you decided to drop a redo log member from the database. Which condition should be met to drop a redo log file？（）A The redo log file should belong to an active group.B The redo log file should belong to an inactive group.C The redo log file should belong to the current group.D The redo log file can be dropped only if all the transactions are stopped.E Before a redo log file is dropped， it should be deleted from the operating system （OS）.
多选题Which two statements are true regarding the MRKT tablespace（）ANo more data files can be added to the tablespace.BSegment space is managed by free lists in the tablespace.CA user created without being assigned a default tablespace uses this tablespace.DThe tablespace can be dropped with the current setting with segments present in it.
单选题Your database is set in NOARCHIVELOG mode and is backed up every night. There are 10 redo log groups on the database， each with three members， making a total of 30 redo log files. At lunchtime the server unexpectedly gets shut down. Upon restarting you notice that the data file belonging to the SYSTEM tablespace has become corrupted. You also notice that there have been 15 log switches during the day. Which solution should you use to recover as much committed data as possible？（）ARestore the data file for the SYSTEM tablespace then open the database. BRestore all redo logs form last night's backup, then restart the database. CPerform a complete restore of all files from last night's backup. Data entered into the database today must be reentered. DMount the instance, take the SYSTEM tablespace offline, open the database, and then restore the data file, recover it, and bring the tablespace online.
单选题You are attempting to clear an unarchived redo log file. In order to manually enact a log switch, which of the following statements is appropriate?（）AALTER DATABASE BALTER SYSTEM CALTER USER DALTER REDO LOG
单选题By default, checkpoints happen at least as often as（）.ARedo log switches. BUPDATE statements are issued against the database. CThe SYSTEM tablespace is accessed. DSMON coalesces free space in a tablespase.