Increase the size of redo log files
Increase the size of redo log buffer
Increase the number of redo log files
Place the redo log files on a separate disk
Decrease the number of redo log groups to two
Increate the number Log Writer （LGWR） process
第1题：
You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode and you want to perform a backup. Which type of backup would be appropriate in this case？ （）
第2题：
You work as a database administrator for Certkiller .com. Users complain that their query is taking a long time to complete. You suspect the database buffer cache size to be the reason， and you define an alert to be generated when the buffer cache hit metric goes below 85%. When you observe the dynamic performance views， you find that the buffer cache hit ratio is 81% but no alerts are being generated. What could be the reason for this problem？（）
第3题：
You work as a database administrator for Certkiller .com. You are using three database， Certkiller DB01， Certkiller DB02， and Certkiller DB03， on different host machines in your development environment. The database serverconfiguration， such as IP address and listener port number， change frequently due to development requirements， and you havethe task of notifying the developers of the changes. Which connection method would you use to overcome this overhead？（）
第4题：
You work as a database administrator for Supportcenter.cn. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（）
第5题：
You work as a database administrator for Certkiller .com. Users in the Certkiller PROD database complain about the slow response when accessing the database. In the Active Session Waiting： Configuration page you find that the majority of the wait time is for the redo log buffer.Further investigation using the Run Queue graph and operating system tools reveals that the redo log files are on the same disks， and that the disk I/O for the redo log files is the reason for the performance degradation. Which two actions would you take to gain performance？（）
第6题：
You work as a database administrator for Certkiller .com. You find that reports are running for a long time in your data warehousing applications. You suspect a lack of indexes is the reason for the performance degradation. Which advisory component would you refer to， in order to determine the appropriate indexes？（）
第7题：
You work as a database administrator for Certkiller .com. In the Certkiller PRODUCTION database you have granted RESUMABLE system privilege to the CONNECT role.Resumablespace operation has been enabled for all user session. You want users NOT to be aware of any kind of space-related problems while performing transactions. Instead， you want the problem to be resolved by a database trigger automatically. Which combination of triggering time and event would you use to achieve this objective？（）
第8题：
Users in your PROD database complain about the slow response of the transactions. While investigating the reason， you find that the transactions are waiting for the undo segments to be available， and undo retention has been set to zero. What would you do to overcome this problem？（）
第9题：
You work as a database administrator for Certkiller .com. You enabled tracing while creating a listener to your database. What additional information is available to you when you enable tracing？（）
第10题：
You work as a database administrator for Certkiller .com. While loading data into the Certkiller STAFF table using Oracle Enterprise Manager 10g Database Control， you find the status of the job as failed. On further investigation， you find the following error message in the output log： ORA-01653 unable to extend table HR. Certkiller STAFF by 8 intablespaceUSERS Which task would you perform to load the data successfully without affecting the users who are accessing the table？（）