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
题目
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.