ocp-497
2015-10-18 16:05
411 查看
QUESTION NO: 497
You perform the following activities during the database upgrade from Oracle Database 10g to Oracle
Database 11g:
1. Capture plans for a SQL workload into a SQL Tuning Set (STS) before upgrade.
2. Load these plans from the STS into the SQL plan baseline immediately after the upgrade. What is the
reason for performing these activities?
A. to minimize plan regression due to the use of a new optimizer version
B. to completely avoid the use of new plans generated by a new optimizer version
C. to prevent plan capturing when the SQL statement is executed after the database upgrade
D. to keep the plan in the plan history so that it can be used when the older version of the optimizer is used
Answer: A
您可以在数据库从Oracle数据库10g升级到Oracle数据库11g中执行下列活动:
1.在升级前为一个SQL工作负载进入到SQL调优集( STS)的捕获计划。
2.升级后立即从SQL调优集加载这些计划到SQL计划基线。执行这些活动
的原因是什么?
A.由于使用新的优化器版本,尽量减少计划退化,
You perform the following activities during the database upgrade from Oracle Database 10g to Oracle
Database 11g:
1. Capture plans for a SQL workload into a SQL Tuning Set (STS) before upgrade.
2. Load these plans from the STS into the SQL plan baseline immediately after the upgrade. What is the
reason for performing these activities?
A. to minimize plan regression due to the use of a new optimizer version
B. to completely avoid the use of new plans generated by a new optimizer version
C. to prevent plan capturing when the SQL statement is executed after the database upgrade
D. to keep the plan in the plan history so that it can be used when the older version of the optimizer is used
Answer: A
您可以在数据库从Oracle数据库10g升级到Oracle数据库11g中执行下列活动:
1.在升级前为一个SQL工作负载进入到SQL调优集( STS)的捕获计划。
2.升级后立即从SQL调优集加载这些计划到SQL计划基线。执行这些活动
的原因是什么?
A.由于使用新的优化器版本,尽量减少计划退化,
相关文章推荐
- ocp-496
- ocp-495
- ocp-494
- ocp-493
- 变态跳台阶
- BZOJ 1150 CTSC2007 数据备份Backup 堆+馋
- 未来教育设想
- 关于Android的asynctask-threads-limits问题:asynctask开启的线程是否有极限
- hdu 3335 Divisibility-暴力
- HTML学习3:常用标签之文本标签
- ocp-492
- 浏览器 回车、F5、Ctrl+F5
- ocp-491
- Linux makefile 教程 非常详细,且易懂
- 51nod 1174 区间中最大的数 (线段树+RMQ)
- UI - DataBase
- 侧滑菜单 Drawerlayout navigationView
- 变量定义式——尽量延后定义时间
- Mongodb的Samus驱动
- java——递归调用