You find today’s performance of your production database to be the best ever.  Therefore， you want to be notified in the future whenever the performance degrades by 10% of today’s performance. What is the first step that you would take to ensure this？（）

You executed the following commands to find the location of the alert log file： Where is the alert log file stored（）

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When you try to open your database， you receive the following error：  ORA-00205： error in identifying controlfile  Where would you find the details required to resolve this error？（）

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When you try to open your database， you receive the following error：  ORA-00205： error in identifying control file   Where would you find the details required to resolve this error？（）

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You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.  Which method would you follow to achieve this？（）

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You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.  Which method would you follow to achieve this？（） 

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You used the following command in Recovery Manager （RMAN） as part of the recovery process： RESTORE CONTROLFILE FROM AUTOBACKUP;  How does RMAN find the control file autobackup？（）

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You used the following command in Recovery Manager （RMAN） as part of the recovery process： RESTORE CONTROLFILE FROM AUTOBACKUP；   How does RMAN find the control file autobackup？（）

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View the Exhibits. You performed operations on the DEPT4 table as shown in the Exhibit. When you perform the FlashbackVersions Query， you find that the first two updates are not listed. What could be the reason？（） 

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You issued the RMAN>SHOW ALL； command. The output of the command is as follows：     After analyzing this output， what conclusion can you draw？ （）

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You are connected to Recovery Manager （RMAN） without a recovery catalog. There is no copy of the control file available. You want to restore the control file from an autobackup. To retrieve the autobackup，you need the database ID （DBID）.  In which two sources would you find the DBID？ （）

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