{"id":1397,"date":"2016-04-02T15:12:58","date_gmt":"2016-04-02T07:12:58","guid":{"rendered":"http:\/\/www.821121.com\/?p=1397"},"modified":"2021-02-02T15:14:51","modified_gmt":"2021-02-02T07:14:51","slug":"nologging%e7%9a%84%e4%b8%8d%e6%ad%a3%e7%a1%ae%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"http:\/\/www.821121.com\/?p=1397","title":{"rendered":"NOLOGGING\u7684\u4e0d\u6b63\u786e\u4f7f\u7528"},"content":{"rendered":"<p>\u5f88\u591a\u4eba\u77e5\u9053\uff0c\u5728\u8fdb\u884c\u6570\u636e\u5904\u7406\u65f6\uff0c\u5982\u679c\u4e0d\u4ea7\u751f\u65e5\u5fd7\u6216\u53ea\u4ea7\u751f\u5c11\u91cf\u7684\u65e5\u5fd7\uff0c\u5c06\u4f1a\u6709\u660e\u663e\u7684\u3001\u751a\u81f3\u662f\u5de8\u5927\u7684\u6548\u7387\u63d0\u5347\u3002\u4e0b\u9762\u6709\u51e0\u6761\u4e0d\u540c\u7684SQL\uff1a<\/p>\n<pre><code class=\"language-sql\">INSERT INTO T1 NOLOGGING;  \nINSERT INTO T1 SELECT * FROM T2 NOLOGGING;  \nINSERT \/*+ NOLOGGING *\/ INTO T1 VALUES (&#039;0&#039;);  \nINSERT \/*+ NOLOGGING *\/ INTO T1 SELECT * FROM T2;  \nDELETE \/*+ NOLOGGING *\/ FROM T1;  \nUPDATE \/*+ NOLOGGING *\/ T1 SET A=&#039;1&#039;;  <\/code><\/pre>\n<p>\u5b9e\u9645\u4e0a\uff0c\u4e0a\u8ff0\u6240\u6709\u7684SQL\u6ca1\u6709\u4e00\u4e2a\u80fd\u591f\u5b9e\u73b0\u201c\u4e0d\u4ea7\u751f\u201d\u65e5\u5fd7\u7684\u6570\u636e\u66f4\u6539\u64cd\u4f5c\u3002\u7b2c1-2\u6761SQL\u8bed\u53e5\u867d\u7136\u6ca1\u6709\u5c06NOLOGGING\u5199\u4e3aHint\u7684\u5f62\u5f0f\uff0c\u4f46\u662f\u4e5f\u662f\u5f88\u591a\u4eba\u7684\u9519\u8bef\u5199\u6cd5\uff0c\u4e00\u5e76\u5217\u5728\u6b64\u5904\u3002\u4e8b\u5b9e\u4e0a\uff0cNOLOGGING\u5e76\u4e0d\u662fOracle\u7684\u4e00\u4e2a\u6709\u6548\u7684Hint\uff0c\u800c\u662f\u4e00\u4e2aSQL\u5173\u952e\u5b57\uff0c\u901a\u5e38\u7528\u4e8eDDL\u8bed\u53e5\u4e2d\u3002\u8fd9\u91ccNOLOGGING\u76f8\u5f53\u4e8e\u7ed9SELECT\u7684\u8868\u6307\u5b9a\u4e86\u4e00\u4e2a\u522b\u540d\u4e3a\u201cNOLOGGING\u201d\u3002\u4e0b\u9762\u662fNOLOGGING\u7684\u4e00\u4e9b\u6b63\u786e\u7528\u6cd5\uff1a<\/p>\n<pre><code class=\"language-sql\">CREATE TABLE T1 NOLOGGING AS SELECT * FROM T2;  \nCREATE INDEX T1_IDX ON T1(A) NOLOGGING;  \nALTER INDEX T1_IDX REDUILD ONLINE NOLOGGING;  \nALTER TABLE T1 NOLOGGING;  <\/code><\/pre>\n<p>\u4e0a\u8ff0SQL\u4e2d\uff0c\u6700\u540e\u4e00\u6761SQL\u53ea\u662f\u5c06\u8868\u7684LOGGING\u5c5e\u6027\u6539\u4e3a&quot;NO&quot;\u3002\u800c\u4e4b\u524d\u7684\u51e0\u6761SQL\u80fd\u591f\u6709\u6548\u5730\u51cf\u5c11DDL\u64cd\u4f5c\u65f6\u51cf\u5c11\u7684\u65e5\u5fd7\u91cf\u3002<\/p>\n<p>\u5728DML\u64cd\u4f5c\u4e2d\uff0c\u53ea\u6709\u4e0b\u9762\u4e00\u79cd\u65b9\u5f0f\u80fd\u591f\u5728\u5927\u6570\u636e\u91cf\u65f6\u4ecd\u7136\u53ea\u4f1a\u4ea7\u751f\u6781\u5c11\u91cf\u7684\u65e5\u5fd7\uff1a<\/p>\n<pre><code class=\"language-sql\">INSERT \/*+ APPEND *\/ INTO T1 SELECT * FROM T2;  <\/code><\/pre>\n<p>\u4e5f\u5c31\u662f\u4f7f\u7528append hint\u3002\u4f46\u662f\u8fd9\u4e2ahint\u8981\u8fbe\u5230\u76ee\u7684\uff0c\u9700\u8981\u4ee5\u4e0b\u51e0\u4e2a\u6761\u4ef6\uff1a<\/p>\n<p>\u4f7f\u7528INSERT \/<em>+ APPEND <\/em>\/ INTO .. SELECT .. 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