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单选题
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？（）
A
It degrades the run time and compiler performance.
B
It provides better run time and compiler performance.
C
It provides better optimization of the statement during parse time.
D
It forces the rule based optimizer to be used for statement optimization.
E
It provides better run time performance but slightly degraded compiler performance.
F
It provides better run time performance but slightly degraded run time performance.
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更多 “单选题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？（）A It degrades the run time and compiler performance.B It provides better run time and compiler performance.C It provides better optimization of the statement during parse time.D It forces the rule based optimizer to be used for statement optimization.E It provides better run time performance but slightly degraded compiler performance. F It provides better run time performance but slightly degraded run time performance.” 相关考题
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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？（）A、It degrades the run time and compiler performance.B、It provides better run time and compiler performance.C、It provides better optimization of the statement during parse time.D、It forces the rule based optimizer to be used for statement optimization.E、It provides better run time performance but slightly degraded compiler performance. F、It provides better run time performance but slightly degraded run time performance.
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考题
单选题In your database server， the parameter PLSQL_OPTIMIZE_LEVEL has been set to 2. What would this setting achieve？（）A
It degrades the run time and compiler performance.B
It provides better run time and compiler performance.C
It provides better optimization of the statement during parse time.D
It forces the rule based optimizer to be used for statement optimization.E
It provides better run time performance but slightly degraded compiler performance.F
It provides better run time performance but slightly degraded run time performance.
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单选题You work as a database administrator for Supportcenter.cn. 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？（）A
The advisory memory has been turned off.B
The DB_CACHE_ADVICE parameter has been set to OFF in the parameter file.C
The STATISTICS_LEVEL parameter has been set to BASIC in the parameter file.D
The TIMED_STATISTICS parameter has been set to FALSE in the parameter file.E
The STATISTICS_LEVEL parameter has been set to TYPICAL in the parameter file.
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单选题You work as a database administrator at Certkiller .com. In your production database there is a job， CALC_STAT， which has been scheduled to run every Friday at 5.00 p.m. CALC_STATupdates the optimizer statistics for the objects owned by the APPSschema. 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？（）A
WindowB
ProgramC
Job classD
Window group
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Restart the database instance and run the jobB
Truncate the Certkiller STAFF table and run the jobC
Delete all rows from the Certkiller STAFF table and run the jobD
Increase the size of the USERStablespacethe and run the jobE
Increase the size of the database default permanenttablespaceand run the job
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单选题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？（）A
AFTER CREATEB
AFTER SUSPENDC
BEFORE CREATED
AFTER TRUNCATEE
BEFORE SUSPENDF
AFTER INSERT OR DELETE OR DELETEG
BEFORE INSERT OR DELETE OR DELETE
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fixed viewsB
the alert log fileC
the parameter fileD
the server parameter fileE
dynamic performance views
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