全部博文(413)
发布时间:2013-04-16 16:10:21
http://www.itpub.net/thread-1778561-1-1.html逻辑读cache buffers chain latch(cbc latch) miss分析我们有个库的awr报告中,有如下的latch miss:cache buffers chainskcbgtcr: kslbegin excl01,489.........
发布时间:2013-04-12 13:31:23
转自:http://www.dbafree.net/?p=778今天晚上在一个比较重要的库上,cpu严重的冲了一下,导致db响应变慢,大量应用连接timeout,紧接着listener就挂了,连接数也满了等一连串问题。我们的监控抓取了当时系统的等待事件,active sql及session_wait等待事件,所以问题比较容量定位,查看下监控,马上就发现出问题的时.........
发布时间:2013-04-11 16:35:05
oracle logminer, which is part of oracle database, enables you to query online and archived redo log files through a sql interface. redo log files contain information about the history of activity on a database.logminer benefitsall changes made to user data or to the database dictionary are.........
发布时间:2013-04-09 14:58:33
所有控制文件和数据文件丢失,使用rman从备份集中恢复:sql> startup nomount;oracle instance started.total system global area 218103808 bytesfixed size 1218604 bytesvariable size .........