单选题You executed the following command in Recovery Manager （RMAN）：   RMAN REPORT NEED BACKUP days 3；   What is the output of this command？（）A  a list of files that require a backup within three daysB  a list of files requiring more than 3 days of archive l

第1题：

The backup retention policy is configured as RECOVERY WINDOW 2. You executed the following command in Recovery Manager （RMAN） against your database： RMAN> REPORT OBSOLETE； What would you see in the output？（）

• A、 a list of all those files that have been deleted in the last two days
• B、 a list of all those files that have been recovered within the last two days
• C、 a list of all the expired backups and copies
• D、 a list of backups and copies that are outside the range covered by the current retention policy

第2题：

You defined the Recovery Manager （RMAN） retention policy to recovery window of 7 days by executing the following command：  RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS；  When a backup is performed， what would be the status of this backup after seven days？（）

• A、 The backup would be marked as invalid.
• B、 The backup would be marked as obsolete.
• C、 The backup would be removed from the media.
• D、 The backup would be removed from the RMAN repository.

第3题：

第4题：

You executed the following command in Recovery Manager （RMAN） against your Oracle 10g database：  RMAN> REPORT NEED BACKUP days 3;  What would be the output of this command？（） 

• A、a list of files that require a backup within three days
• B、a list of files that have not been backed up for three days
• C、a list of files that RMAN recommends be backed up only once in every three days， based on low volatility
• D、a list of files for which a backup has already been performed and may need a backup after three days

第5题：

You executed the following command in the Recovery Manager （RMAN）：   RMAN> REPORT NEED BACKUP days 3；   What is the output of this command？（）  

• A、 A list of files that require a backup within 3 days
• B、 A list of files requiring more than 3 days of archivelogs to apply
• C、 A list of files that RMAN recommends be backed up only once in every three days，based on low volatility
• D、 A list of files for which a backup as already been performed in the last three days and which is  required to be backed up again based on the high number of transactions performed on them

第6题：

In which scenario， will you issue the following command？（） RMAN> REPORT NEED BACKUP DAYS 7；

• A、 to configure RMAN to maintain backup information in the RMAN repository for seven days
• B、 to configure RMAN to maintain backup information in the control file for at least seven days
• C、 to display the list of files that have not been backed up for the last seven days
• D、 to display the list of files that must be backed up within seven days

第7题：

The backup retention policy is configured as RECOVERY WINDOW 2. You executed the following command in Recovery Manager （RMAN） against your database：  RMAN> REPORT OBSOLETE;  What would you see in the output？（）

• A、a list of all the expired backups and copies
• B、a list of all those files that have been deleted in the last two days
• C、a list of all those files that have been recovered within the last two days
• D、a list of backups and copies that are outside the range covered by the current retention policy

第8题：

第9题：

You executed the following command in Recovery Manager （RMAN）：   RMAN> REPORT NEED BACKUP days 3；   What is the output of this command？（）  

• A、 a list of files that require a backup within three days
• B、 a list of files requiring more than 3 days of archive logs to apply
• C、 a list of files that RMAN recommends be backed up only once in every three days，based on low volatility
• D、 a list of files for which a backup has already been performed in the last three days and which is required to be backed up again based on the high number of transactions performed on them

第10题：

What is the output of this command?（）

• A、A list of files that require a backup within 3 days
• B、A list of files requiring more than 3 days of archivelogs to apply
• C、A list of files that RMAN recommends be backed up only once in every three days, based on low volatility
• D、A list of files for which a backup as already been performed in the last three days and which is required to be backed up again based on the high number of transactions performed on them