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发布时间:2014-06-14 01:07:00

7.2 Configuring and Using the Buffer Cache For many types of operations, Oracle Database uses the buffer cache to store blocks read from disk. Oracle Database bypasses the buffer cache for particular operations, such as sorting and parallel reads. For operations that use the buffer ca.........【阅读全文】

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发布时间:2014-06-12 23:07:07

7 Configuring and Using Memory This chapter explains how to allocate memory to Oracle Database memory caches, and how to use those caches. Proper sizing and effective use of the Oracle Database memory caches greatly improves database performance. Oracle recommends using automatic memory.........【阅读全文】

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发布时间:2014-06-11 22:41:56

6 Automatic Performance Diagnostics This chapter describes Oracle Database automatic features for performance diagnosing and tuning. 这章描述oracle自动性能诊断和调优特性(其实也就是ADDM了),包括如下几点: This chapter contains the following topics: Ove.........【阅读全文】

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发布时间:2014-06-11 22:45:10

下面是我的一个试验: 第一阶段是准备工作: 1. 创建一个用户 2. 查看一下系统启动和目前的时间,我用的是虚拟机,所以从10号就没关机,是从13:33:16开始启动的 3. 先创建一个表 4. 第一次插入数据后,有76166条记录 5. 不断的向里面插入数据,最后达到了1218656 * 2条数据,即有2437312数据。 6. 然后执行s.........【阅读全文】

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发布时间:2014-06-10 00:55:48

5.3.7 Generating Automatic Workload Repository Compare Periods Reports While an AWR report shows AWR data between two snapshots (or two points in time), the AWR Compare Periods report shows the difference between two periods (or two AWR reports, which equates to four snapshots). Using.........【阅读全文】

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