Oracle Commit

http://m.blog.itpub.net/29523859/viewspace-1331176/ http://www.linuxidc.com/Linux/2013-03/80467.htm http://blog.itpub.net/26651/viewspace-1040530/ commit工作過程 commit提交之前 Oracle在SGA撤銷段緩衝區中生成撤銷記錄，撤銷記錄包含更

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