{"id":209861,"date":"2022-08-20T15:15:34","date_gmt":"2022-08-20T07:15:34","guid":{"rendered":"https:\/\/www.keaglegz.com\/209861.html"},"modified":"2022-08-20T15:15:34","modified_gmt":"2022-08-20T07:15:34","slug":"oracle-%e5%90%8e%e5%8f%b0%e8%bf%9b%e7%a8%8b%e5%8a%9f%e8%83%bd%e8%af%b4%e6%98%8e","status":"publish","type":"post","link":"https:\/\/www.dongwubaike.cn\/fanhao\/209861.html","title":{"rendered":"Oracle \u540e\u53f0\u8fdb\u7a0b\u529f\u80fd\u8bf4\u660e"},"content":{"rendered":"\n<p><strong>\u4e00\u3001SMON\uff1a\u7cfb\u7edf\u76d1\u7763\u8fdb\u7a0b<\/strong><br \/>1.\u4e3b\u8981\u662f\u5df2\u7ecf\u63d0\u4ea4\u7684\u6570\u636e\u4f46\u662f\u8fd8\u6ca1\u6709\u8fdb\u884c\u5199\u5165\u6570\u636e\u6587\u4ef6\u7ed9\u65ad\u7535\u4e86\uff0c\u91cd\u542f\u7684\u65f6\u5019\uff0csmon \u5c31\u4f1a\u8fdb\u884c\u6062\u590d<br \/>a.\u6267\u884c\u524d\u6eda\uff0c\u5c06\u5df2\u7ecf\u5199\u5165\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6\u4f46\u662f\u8fd8\u6ca1\u6709\u5199\u5165\u5230\u6570\u636e\u6587\u4ef6\u4e2d\u7684\u6570\u636e\uff08\u4f7f\u7528scn \u53f7\u7801\u6765\u8bc6\u522b\u63d0\u4ea4\u8bb0\u5f55\u7684\uff09<br \/>b.\u6253\u5f00\u6570\u636e\u5e93<br \/>c.\u56de\u6eda\u6ca1\u6709\u63d0\u4ea4\u7684\u4e8b\u52a1<br \/>2.\u8fd8\u53ef\u4ee5\u8fdb\u884c\u78c1\u76d8\u7a7a\u95f4\u7ef4\u62a4\u5de5\u4f5c<br \/>a.\u56de\u6536\u6216\u8005\u5408\u5e76\u6570\u636e\u6587\u4ef6\u4e2d\u76f8\u8fde\u7684\u7a7a\u95f2\u533a<br \/>b.\u91ca\u653e\u4e34\u65f6\u6bb5<br \/><strong>\u4e8c\u3001PMON\uff1a\u8fdb\u7a0b\u76d1\u7763\u8fdb\u7a0b<\/strong><br \/>1.\u5f53\u67d0\u4e2a\u8fdb\u7a0b\u5d29\u6e83\uff0cPMON \u5c06\u8d1f\u8d23\u8fdb\u884c\u5982\u4e0b\u7684\u6e05\u7406\u5de5\u4f5c<br \/>a.\u56de\u6eda\u7528\u6237\u5f53\u524d\u4e8b\u52a1<br \/>b.\u91ca\u653e\u7528\u6237\u6240\u52a0\u7684\u6240\u6709\u8868\u4e00\u7ea7\u548c\u884c\u4e00\u7ea7\u7684\u9501<br \/>c.\u91ca\u653e\u7528\u6237\u6240\u6709\u7684\u5176\u4ed6\u8d44\u6e90\u7b49<br \/><strong>\u4e09\u3001CKPT\uff1a\u6821\u9a8c(\u68c0\u67e5)\u70b9\u548c\u68c0\u9a8c\u70b9\u8fdb\u7a0b<\/strong><br \/>1.\u63d0\u9ad8\u7cfb\u7edf\u6548\u7387\u548c\u6570\u636e\u5e93\u4e00\u81f4\u6027\uff0c\u5f15\u5165\u4e86\u6821\u9a8c\u70b9\u7684\u4e8b\u4ef6\uff0cCKPT \u662f\u5728DBWR \u5c06\u9ad8\u901f\u7f13\u51b2\u4e2d\u7684\u6570\u636e\u5199\u5165\u5230\u6570\u636e\u6587\u4ef6\u4e0a\u7684\u65f6<br \/>\u5019\u4ea7\u751f\u7684\uff0c\u7406\u8bba\u4e0a\u8bf4\u5b83\u662f\u4e0d\u9700\u8981\u7684<br \/>\u53ef\u4ee5\u901a\u8fc7redo log \u548c scn \u4fdd\u8bc1\u4e86\u5b8c\u5168\u6062\u590d\uff0c\u5f15\u5165\u5b83\u662f\u4e3a\u4e86\u63d0\u9ad8\u6548\u7387\uff0c\u56e0\u4e3a\u6240\u6709\u7684\u6821\u9a8c\u70b9\u4e3a\u6b62\u7684\u53d8\u5316\u90fd\u5df2\u7ecf\u5199\u5165\u5230\u6570<br \/>\u636e\u6587\u4ef6\u4e2d\u4e86\uff0c\u5728\u6062\u590d\u7684\u65f6\u5019<br \/>\u6821\u9a8c\u70b9\u4e4b\u524d\u7684\u91cd\u505a\u65e5\u5fd7\u5c31\u4e0d\u5728\u9700\u8981\u4e86\uff0c\u8fd9\u6837\u5b9e\u4f8b\u6062\u590d\u5c31\u52a0\u5feb\u4e86\uff0cCKPT \u4f1a\u5c06\u6821\u9a8c\u70b9\u5199\u5165\u5230\u6240\u6709\u76f8\u5173\u7684\u6570\u636e\u6587\u4ef6\u7684\u6587\u4ef6\u5934\u4e2d\uff0c\u8fd8\u8981\u5c06\u6821\u9a8c\u70b9\u53f7\u7801\u3001\u91cd\u505a\u65e5\u5fd7\u5e8f\u5217\u53f7\u3001\u5f52\u6863\u65e5\u5fd7\u540d\u79f0\u548c\u6700\u4f4e\u3001\u6700\u9ad8scn \u53f7\u90fd\u4f1a\u5199\u5165\u63a7\u5236\u6587\u4ef6\u4e2d\uff0c\u7531\u4e8eckpt \u4f1a\u4ea7\u751f\u5927\u91cf\u7684IO\u64cd\u4f5c\uff0c\u56e0\u6b64\u4e0d\u80fd\u9891\u7e41\u7684\u4ea7\u751f\u6821\u9a8c\u70b9\uff0c\u6700\u597d\u572820 \u5206\u949f\u4ee5\u4e0a<br \/><strong>\u56db\u3001ARCn:\u5f52\u6863\u65e5\u5fd7\u8fdb\u7a0b<\/strong><br \/>1.\u5f53\u4e00\u7ec4\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6\u5199\u6ee1\u540e\uff0c\u4f1a\u5199\u53e6\u5916\u4e00\u7ec4\uff0c\u5f53\u6700\u540e\u4e00\u7ec4\u5199\u6ee1\u540e\u4f1a\u5728\u5199\u7b2c\u4e00\u7ec4\uff0c\u53eb\u505a\u65e5\u5fd7\u5207\u6362<br \/>2.\u5982\u679c\u6ca1\u6709\u5f00\u5f52\u6863\uff0c\u90a3\u4e48\u8986\u76d6\u540e\u5c31\u65e0\u6cd5\u8fdb\u884c\u6062\u590d\u4e86<br \/>3.\u5982\u679c\u5f00\u4e86\u5f52\u6863\uff0c\u90a3\u4e48\u5c31\u4f1a\u4f7f\u7528arch \u8fdb\u7a0b\u8fdb\u884c\u5199\u5165\u5f52\u6863\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0cOracle \u4f1a\u786e\u4fdd\u5728\u4e00\u7ec4\u91cd\u505a\u65e5\u5fd7\u7684\u5f52\u6863\u64cd\u4f5c\u5b8c\u6210<br \/>\u4e4b\u524d\u4e0d\u4f1a\u91cd\u65b0\u4f7f\u7528\u8be5\u7ec4\u65e5\u5fd7<br \/><strong>\u4e94\u3001DBWn:\u6570\u636e\u5e93\u5199\u8fdb\u7a0b<\/strong><br \/>1.11g \u4e4b\u524d\u53ea\u53ef\u4ee5\u67090~9,10 \u4e2a\u8fdb\u7a0b\uff0c11g \u4e4b\u540e\u53ef\u4ee5\u670936 \u4e2a\uff0c0~9 \u548ca~z\uff0c\u901a\u8fc7 db_writer_processes \u6765\u8bbe\u7f6e\u4e2a\u6570<br \/>\u7684\uff0c\u5982\u679c\u542f\u52a8\u7684\u65f6\u5019\u6ca1\u6709\u8bf4\u660e\u4e2a\u6570<br \/>\u90a3\u4e48\u662f\u7531cpu \u7684\u4e2a\u6570\u6765\u51b3\u5b9a\u7684\u8be5\u53c2\u6570\u7684<br \/>2.\u5f53\u4ee5\u4e0b\u60c5\u51b5\u53d1\u751f\u65f6\uff0cDBWR \u4f1a\u5c06\u9ad8\u901f\u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u5199\u5165\u5230\u6570\u636e\u6587\u4ef6\u4e2d<br \/>a.\u5f53\u810f\u7f13\u51b2\u533a\u7684\u6570\u91cf\u8d85\u8fc7\u4e86\u6240\u8bbe\u5b9a\u7684\u9650\u989d<br \/>b.\u6240\u8bbe\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u5df2\u5230<br \/>c.\u6709\u8fdb\u7a0b\u9700\u8981\u9ad8\u901f\u7f13\u51b2\u533a\uff0c\u4f46\u662f\u6ca1\u6709\u7a7a\u95f2\u7684\u9ad8\u901f\u7f13\u51b2\u533a\u7a7a\u95f4\u65f6\u5019<br \/>d.\u6821\u9a8c(\u68c0\u67e5\u70b9)\u53d1\u751f\u65f6<br \/>e.\u67d0\u4e2a\u8868\u88ab\u5220\u9664\u6216\u8005\u622a\u65ad(truncate,drop)<br \/>f.\u67d0\u4e2a\u8868\u7a7a\u95f4\u88ab\u8bbe\u7f6e\u4e3a\u53ea\u8bfb<br \/>g.\u8868\u7a7a\u95f4\u8fdb\u884c\u8054\u673a\u5907\u4efd\u65f6<br \/>h.\u8868\u7a7a\u95f4\u88ab\u8bbe\u7f6e\u4e3a\u8131\u673a\u65f6<br \/><strong>\u516d\u3001LGWR\uff1a\u91cd\u505a\u65e5\u5fd7\u5199\u8fdb\u7a0b<\/strong><br \/>1.\u5c06\u91cd\u505a\u65e5\u5fd7\u7f13\u51b2\u533a\u7684\u8bb0\u5f55\u987a\u5e8f\u5199\u5165\u5230\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u8fd9\u91cc\u6ce8\u610f\u5b83\u662f\u987a\u5e8f\u5199\u5165\u7684\uff0c\u56e0\u6b64IO \u76f8\u5bf9\u8981\u5c0f<br \/>2. commit \u8bed\u53e5\u600e\u6837\u5de5\u4f5c\uff0c\u8fd9\u91cc\u4f7f\u7528\u4e86\u5feb\u901f\u63d0\u4ea4\u6280\u672f<br \/>a.\u670d\u52a1\u5668\u8fdb\u7a0b\u628a\u63d0\u4ea4\u7684\u8bb0\u5f55\u8fde\u540c\u4ea7\u751f\u7684scn \u53f7\u7801\u4e00\u8d77\u5199\u5165\u91cd\u505a\u65e5\u5fd7\u7f13\u51b2\u533a\u4e2d<br \/>b.LGWR \u5c06\u91cd\u505a\u65e5\u5fd7\u7f13\u51b2\u533a\u4e2d\u7684\u8bb0\u5f55\u5199\u5165\u5728\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6\u4e2d\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u4fdd\u8bc1\u6062\u590d\u4e86<br \/>c.oracle \u901a\u77e5\u7528\u6237(\u8fdb\u7a0b)\u63d0\u4ea4\u5df2\u7ecf\u5b8c\u6210<br \/>e.\u670d\u52a1\u5668\u8fdb\u7a0b\u5c06\u4fee\u6539\u6570\u636e\u5e93\u9ad8\u901f\u7f13\u51b2\u533a\u4e2d\u76f8\u5173\u6570\u636e\u7684\u72b6\u6001\u5e76\u91ca\u653e\u8d44\u6e90\u548c\u6253\u5f00\u9501(\u8fd9\u4e2a\u65f6\u5019\u53ef\u80fd\u8fd9\u4e9b\u6570\u636e\u5e76\u6ca1\u6709\u5199\u5165<br \/>\u5230\u6570\u636e\u6587\u4ef6\u4e2d,\u4ed6\u4eec\u6807\u8bb0\u4e3a\u810f\u6570\u636e\uff0c\u4e4b\u540e\u7531DBWR \u5199\u5165\u6570\u636e\u6587\u4ef6)<br \/>3.\u4ee5\u4e0b\u60c5\u51b5LGWR \u4f1a\u5199\u5165\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6<br \/>a.\u4e8b\u52a1\u63d0\u4ea4<br \/>b.\u91cd\u505a\u65e5\u5fd7\u7f13\u51b2\u533a\u4e2d\u7684\u8bb0\u5f55\u8d85\u8fc7\u4e86\u7f13\u51b2\u533a\u5bb9\u91cf\u76841\/3<br \/>c.DBWR \u5c06\u6570\u636e\u5e93\u9ad8\u901f\u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u5757\u5199\u5165\u5230\u6570\u636e\u6587\u4ef6\u4e4b\u524d<br \/>d.\u6bcf3 \u79d2<\/p>\n<p><span><span style=\"color: #ff0000;\">\u66f4\u591aOracle\u76f8\u5173\u4fe1\u606f\u89c1<\/span><span style=\"color: #0000ff;\">Oracle<\/span><span style=\"color: #ff0000;\"> \u4e13\u9898\u9875\u9762 <\/span><span style=\"color: #0000ff;\">http:\/\/www.linuxidc.com\/topicnews.aspx?tid=12<\/span><\/span><\/p>\n<p><span style=\"font-size: small;\"><strong>\u672c\u6587\u6c38\u4e45\u66f4\u65b0\u94fe\u63a5\u5730\u5740<\/strong><\/span>\uff1ahttp:\/\/www.linuxidc.com\/Linux\/2018-01\/150045.htm<\/p>\n<p><a href=\"http:\/\/cuohei.com\/innodb\/uploads\/allimg\/linux14\/logo.gif\" data-fancybox=\"images\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/cuohei.com\/innodb\/uploads\/allimg\/linux14\/logo.gif\" width=\"15\" height=\"17\" alt=\"Oracle \u540e\u53f0\u8fdb\u7a0b\u529f\u80fd\u8bf4\u660e\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001SMON\uff1a\u7cfb\u7edf\u76d1\u7763\u8fdb\u7a0b<br \/>\n1.\u4e3b\u8981\u662f\u5df2\u7ecf\u63d0\u4ea4\u7684\u6570\u636e\u4f46\u662f\u8fd8\u6ca1\u6709\u8fdb\u884c\u5199\u5165\u6570\u636e\u6587\u4ef6\u7ed9\u65ad\u7535\u4e86\uff0c\u91cd\u542f\u7684\u65f6\u5019\uff0csmon \u5c31\u4f1a\u8fdb\u884c\u6062\u590d<br \/>\na.\u6267\u884c\u524d\u6eda\uff0c\u5c06\u5df2\u7ecf\u5199\u5165\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6\u4f46\u662f\u8fd8\u6ca1\u6709\u5199\u5165\u5230\u6570\u636e\u6587\u4ef6\u4e2d\u7684\u6570\u636e\uff08\u4f7f\u7528scn \u53f7\u7801\u6765\u8bc6\u522b\u63d0\u4ea4\u8bb0\u5f55\u7684\uff09<br \/>\nb.\u6253\u5f00\u6570\u636e\u5e93<br \/>\nc.\u56de\u6eda\u6ca1\u6709\u63d0\u4ea4\u7684\u4e8b\u52a1<br 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