摘要:
buffer cache与相关的latch等待事件 1.buffer cache 2.latch:cache buffers lru chain 3.latch:cache buffers chains 1.buffer cache 我的理解: buffer cache理解成4块结构: 三个列表+1... 阅读全文
posted @ 2016-01-14 09:40
馒头斋
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摘要:
先查看存在的等待事件:col event for a40col WAIT_CLASS format a20select sid,WAIT_CLASS,event,p1,p2,p3,WAIT_TIME,SECONDS_IN_WAIT from v$session_waitwhere event not... 阅读全文
posted @ 2016-01-14 09:39
馒头斋
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