A leaf will be marked as invalid.
An update in a leaf row takes place.
The index will be updated automatically at commit.
A leaf row in the index will be deleted and inserted.
The index becomes invalid when you make any updates
第1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2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 Certkiller .com. As a result of performance analysis， you created an index on theprod_namecolumn of the Certkiller prodtable， which contains about ten thousand rows. Later， you updated a product name in the table. How does this change affect the index？（）
第5题：
You work as a database administrator for Certkiller .com. Users in the Certkiller .com PROD database complain about the slow response of 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6题：
As a result of performance analysis， you created an index on the prod_name column of the prod_det table， which contains about ten thousand rows. Later， you updated a product name in the table. How does this change affect the index？（）
第7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8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9题：
You work as a database administrator for Certkiller .com. In your organization， you have four databases， Certkiller DB01， Certkiller DB02， Certkiller DB03， and Certkiller DB04， which are located in Berlin， Frankfurt，Rammstein， and Munich respectively， and which were created using Database Configuration Assistant （DBCA）. You want to perform administrative tasks on these databases that include startup and shutdown， taking regular backups， and so on， fromFrankfurtusing Oracle tools. Which Oracle file would you enable to perform this task？（）
第10题：
You work as a database administrator for Certkiller .com. When you tried to connect to the database， you received the following error： ERROR： ORA-12541：TNS：no_listener You found that the listener is not running on the server， so you issued the following command in the Listener Control utility to start the listener. lsnrctl>START What statement is true？（）