You issued the following command to analyze the SCOTT.EMP table for block corruption：   ANALYZE TABLE SCOTT.EMP VALIDATE STRUCTURE；  You received the following error：   ORA-01578： ORACLE data block corrupted  （file # %s， block # %s）   How will you resolve the block corruption problem？（）

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

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You issue these LSNRCTL commands：  LSNRCTL> SET CURRENT_LISTENER listener01 LSNRCTL> START listener02  What is the result of issuing these commands？（）

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You issued the following statement：   SQL>ALTER DATABASE ENABLE RESUMABLE TIMEOUT n；   What will be the result of issuing the above statement？（）

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You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE；  What does the statement generate？（）

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You are maintaining the database of a company. The listener process， listener1， is configured for remote access. You have issued the following command：   LSNRCTL>STATUS listener1   Which information will NOT be displayed when you issue the above command？（） 

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You issued the following command at the UNIX environment：   % setenv ORA_SDTZ ’OZ_TZ’   What will be the impact of issuing the above command？（）  

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You notice that the performance of the database has degraded because of frequent checkpoints.  Which twoactions resolve the issue（）

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You enable block change tracking. You issue the following command：   BACKUP INCREMENTAL LEVEL 0 DATABASE；   The next day，you issue the following command：   BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE；   Which statement about the use of the change tracking file is true？（）  

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

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

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