单选题You have performed the first step in placing your database into ARCHIVELOG mode. The second step is deciding whether the online redo log files are to be archived automatically or manually.  Which action should you take to enable archiving at instance s

第1题：

Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains one redo member. When you attempt to start the database, you receive the following errors: ORA-00313: open failed for members of log group 1 of thread 1 ORA-00312: online log 1 thread 1: 'D:/REDO01.LOG' You discover that the online redo log file of the current redo group is corrupted. Which statement should you use to resolve this issue?（）

• A、ALTER DATABASE DROP LOGFILE GROUP 1;
• B、ALTER DATABASE CLEAR LOGFILE GROUP 1;
• C、ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1;
• D、ALTER DATABASE DROP LOGFILE MEMBER 'D:/REDO01.LOG

第2题：

The database is running in the ARCHIVELOG mode. It has three redo log groups with one member each. One of the redo log groups has become corrupted. You have issued the following command during the recovery of a damaged redo log file：   ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 3；   Which action should you perform immediately after using this command？（）  

• A、 You should perform a log switch
• B、 You should make a backup of the database
• C、 You should switch the database to the NONARCHIVELOG mode
• D、 You should shut down the database instance and perform a complete database recovery

第3题：

第4题：

You performed an incomplete recovery and opened the database with the RESETLOGS option. The LOG_ARCHIVE_FORMAT parameter is set to ’ora_%t_%s_%r.log’.  Which statement regarding the archived redo log files， created in an earlier incarnation of the database，is true？（）

• A、 The archived redo log files will be overwritten.
• B、 The archived redo log files are deleted automatically.
• C、 The archived redo log files should be moved to some other location.
• D、 The archived redo log files are still maintained because the file names are unique.

第5题：

You want to use the automatic management of backup and recovery operations features for your database.Which configuration must you set?（）

• A、Enable the flash recovery area and specify it as the archived redo log destination.
• B、Disable the flash recovery area and start the database instance in ARCHIVELOG mode.
• C、Enable the flash recovery area but do not specify it as the archived redo log destination.
• D、Disable the flash recovery area and start the database instance in NOARCHIVELOG mode.

第6题：

You configured the Flash Recovery Area （FRA） for your database. The database instance is running inARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area.  Which twofiles are removed automatically if the space is required in the FRA as per the retention policy（）

• A、Flashback log files
• B、Backups that have become obsolete
• C、User managed backups of the data files and control files
• D、Archived redo log files that have multiple copies in a different archive location and not backed up

第7题：

You want to use the automatic management of backup and recovery operations features for your database.Which configuration must you set?（）

• A、Enable the flash recovery area and specify it as the archived redo log destination.
• B、Disable the flash recovery area and start the database instance in ARCHIVELOG mode.
• C、Enable the flash recovery area but do not specify it as the archived redo log destination.
• D、Disable the flash recovery area and start the database instance in NOARCHIVELOG mode

第8题：

第9题：

Which two statements are true regarding the database in ARCHIVELOG mode？（）

• A、You have to shut down the database to perform the backups.
• B、Archiving information is written to the data files and redo log files.
• C、You can perform complete database backups without closing the database.
• D、Online redo log files have to be multiplexed before putting the database in ARCHIVELOG mode.
• E、All the previous database backups become invalid after you configure the database to ARCHIVELOG mode.

第10题：

As soon as you discover that you have lost an online redo log， if the database is still functioning， what should be your first action？（）  

• A、 Shut down the database
• B、 Clear the online redo log
• C、 Back up the database
• D、 Checkpoint the database
• E、 Call Oracle support