It degrades the run time and compiler performance.
It provides better run time and compiler performance.
It provides better optimization of the statement during parse time.
It forces the rule based optimizer to be used for statement optimization.
It provides better run time performance but slightly degraded compiler performance.
It provides better run time performance but slightly degraded run time performance.
第1题：
You are working on the 24X7 database with high transaction volume， to ensure faster instance recovery on your database you set the FAST_START_MTTR_TARGET initialization parameter to a very low value. What effect it will have on the database？（）
第2题：
You work as a database administrator for Certkiller .com. In your database server， the parameter PLSQL_OPTIMIZE_LEVEL has been set to 2. What would this setting achieve？（）
第3题：
In your production database there is a job， CALC_STAT， which has been scheduled to run every Friday at 5：00 p.m. CALC_STAT updates the optimizer statistics for the objects owned by the APPS schema. You want the task to be generic， thereby allowing users to modify the attributes of the task at run time without affecting the original task. Which component of Oracle Scheduler must you define to achieve this？（）
第4题：
In the parameter file of your production database， the CONTROL_FILE_RECORD_KEEP_TIME parameter is set to 31. What would be the impact of this setting on the backup that is being performed by using Recovery Manager （RMAN）？（）
第5题：
You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA. While observing the server settings， you find that the following parameter has been set in the parameter file of the database： REMOTE_OS_AUTHENT = TRUE What could have been the reason to set this parameter as TRUE？（）
第6题：
Select three true statements regarding Coherence（）
第7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8题：
The production database has been functional for the last seven days. Because of application requirements， some of the initialization parameters were changed during run time without any comments. You have asked to find out the value of the parameters when the instance was started.Which source would you use to locate this information？（）
第9题：
The production database has been functional for the last seven days. Because of application requirements， some of the initialization parameters were changed during run time without any comments. You have been asked to find out the value of the parameters when the instance was started. Which source would you use to locate this information？（）
第10题：
In your database server， the parameter PLSQL_OPTIMIZE_LEVEL has been set to 2. What would this setting achieve？（）