{"rsdb":{"rid":"156649","subhead":"","postdate":"0","aid":"117571","fid":"57","uid":"1","topic":"1","content":"

\u6211\u4eec\u5f53\u7136\u5e0c\u671b\u8fd9\u6837\u7684\u6539\u53d8\u6c38\u8fdc\u4e0d\u8981\u53d1\u751f\uff0c\u5373\u5728Oracle\u6570\u636e\u5e93\u4e2d\u8dd1\u7684\u6240\u6709SQL\u90fd\u80fd\u6709\u6b63\u786e\u7684\u3001\u7a33\u5b9a\u7684\u6267\u884c\u8ba1\u5212\uff0c\u4f46\u5b9e\u9645\u4e0a\u5728Oracle 11g\u7684SPM(SQL Plan Management)\u51fa\u73b0\u4e4b\u524d\uff0c\u8fd9\u4e00\u70b9\u662f\u5f88\u96be\u505a\u5230\u7684\u3002\u90a3\u4e48\u73b0\u5728\u9000\u800c\u6c42\u5176\u6b21\uff0c\u5982\u679c\u5df2\u7ecf\u51fa\u73b0\u4e86\u6267\u884c\u575f\u5893\u7684\u53d8\u66f4\uff0c\u5373CBO\u5df2\u7ecf\u4ea7\u751f\u4e86\u9519\u8bef\u7684\u6267\u884c\u8ba1\u5212\uff0c\u6211\u4eec\u5e94\u8be5\u600e\u4e48\u7ea0\u6b63\u5462\uff1f<\/p>

\u6211\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u91cd\u65b0\u6536\u96c6\u4e00\u4e0b\u7edf\u8ba1\u4fe1\u606f\u6216\u8005\u4fee\u6539\u76ee\u6807SQL(\u6bd4\u5982\u5728\u76ee\u6807SQL\u4e2d\u52a0\u5165Hint\u7b49)\u4ee5\u7ea0\u6b63\u9519\u8bef\u7684\u6267\u884c\u8ba1\u5212\u3002\u4f46\u6709\u65f6\u5019\u91cd\u65b0\u6536\u96c6\u7edf\u8ba1\u4fe1\u606f\u5e76\u4e0d\u80fd\u89e3\u51b3\u95ee\u9898\uff0c\u66f4\u7cdf\u7cd5\u7684\u662f\uff0c\u5f88\u591a\u60c5\u51b5\u4e0b\u662f\u6ca1\u6709\u529e\u6cd5\u4fee\u6539\u76ee\u6807SQL\u7684SQL\u6587\u672c\u7684(\u6bd4\u5982\u7b2c\u4e09\u65b9\u5f00\u53d1\u7684\u7cfb\u7edf\uff0c\u4fee\u6539\u4e0d\u4e86\u6e90\u7801\uff0c\u6216\u8005\u76ee\u6807SQL\u662f\u524d\u53f0\u6846\u67b6\u52a8\u6001\u751f\u6210\u7684\u7b49\u7b49)\uff0c\u90a3\u4e48\u8fd9\u79cd\u60c5\u51b5\u4e0b\u6211\u4eec\u8be5\u600e\u4e48\u529e\u5462\uff1f<\/p>

\u5728Oracle 10g\/11g\u53ca\u5176\u4ee5\u540e\u7684\u7248\u672c\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528SQL Profile\u6216SPM(SQL Plan Management)\u6765\u89e3\u51b3\u4e0a\u8ff0\u6267\u884c\u8ba1\u5212\u53d8\u66f4\u7684\u95ee\u9898\uff0c\u7528\u5b83\u4eec\u6765\u8c03\u6574\u3001\u7a33\u5b9a\u76ee\u6807SQL\u7684\u6267\u884c\u8ba1\u5212\u3002<\/p>

\u672c\u6587\u4ecb\u7ecd\u4f7f\u7528SQL Profile\u6765\u7a33\u5b9a\u6267\u884c\u8ba1\u5212\uff1a<\/p>

Oracle 10g\u4e2d\u7684SQL Profile(\u76f4\u8bd1\u4e3a\u201cSQL\u6982\u8981\u201d)\u53ef\u4ee5\u8bf4\u662fOracle 9i\u4e2d\u7684Stored Outline(\u76f4\u8bd1\u4e3a\u201c\u5b58\u50a8\u6982\u8981\u201d)\u7684\u8fdb\u5316\u3002Stored Outline\u80fd\u591f\u5b9e\u73b0\u7684\u529f\u80fdSQL Profile\u4e5f\u5b8c\u5168\u80fd\u591f\u5b9e\u73b0\u3002<\/p>

\u4e0eStored Outline\u76f8\u6bd4\uff0cSQL Profile\u5177\u5907\u5982\u4e0b\u4f18\u70b9\uff1a<\/p>

\u4f7f\u7528SQL Profile\u53ef\u4ee5\u5f88\u5bb9\u6613\u5b9e\u73b0\u5982\u4e0b\u4e24\u4e2a\u76ee\u7684\uff1a<\/p>

SQL Profile\u6709\u4e24\u79cd\u7c7b\u578b\uff1a\u4e00\u79cd\u662fAutomatic\u7c7b\u578b\uff0c\u53e6\u4e00\u79cd\u662fManual\u7c7b\u578b\u3002\u4e0b\u9762\u5206\u522b\u4ecb\u7ecd\u8fd9\u4e24\u79cd\u7c7b\u578b\uff1a<\/p>

1. Automatic\u7c7b\u578b\u7684SQL Profile<\/p>

Automatic\u7c7b\u578b\u7684SQL Profile\u5176\u5b9e\u5c31\u662f\u9488\u5bf9\u76ee\u6807SQL\u7684\u4e00\u4e9b\u989d\u5916\u7684\u8c03\u6574\u4fe1\u606f\uff0c\u8fd9\u4e9b\u4fe1\u606f\u5b58\u50a8\u5728\u6570\u636e\u5b57\u5178\u91cc\u3002\u5f53\u6709\u4e86Automatic\u7c7b\u578b\u7684SQL Profile\u540e\uff0cOracle\u5728\u4ea7\u751f\u6267\u884c\u8ba1\u5212\u65f6\u5c31\u4f1a\u6839\u636e\u5b83\u5bf9\u76ee\u6807SQL\u6240\u6d89\u53ca\u7684\u7edf\u8ba1\u4fe1\u606f\u7b49\u5185\u5bb9\u505a\u76f8\u5e94\u7684\u8c03\u6574\uff0c\u56e0\u800c\u80fd\u591f\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u907f\u514d\u4ea7\u751f\u9519\u8bef\u7684\u6267\u884c\u8ba1\u5212\u3002\u4f60\u4e0d\u7528\u62c5\u5fc3Automatic\u7c7b\u578b\u7684SQL Profile\u7684\u51c6\u786e\u6027\uff0c\u56e0\u4e3aOracle\u4f1a\u4f7f\u7528\u7c7b\u578b\u4e8e\u52a8\u6001\u91c7\u7528\u6280\u672f\u90a3\u6837\u7684\u624b\u6bb5\u6765\u4fdd\u8bc1\u8fd9\u4e9b\u989d\u5916\u8c03\u6574\u4fe1\u606f\u76f8\u5bf9\u51c6\u786e\u3002<\/p>

Automatic\u7c7b\u578b\u7684SQL Profile\u4e0d\u4f1a\u50cfStored Outline\u90a3\u6837\u9501\u5b9a\u76ee\u6807SQL\u7684\u6267\u884c\u8ba1\u5212\uff0c\u56e0\u4e3aAutomatic\u7c7b\u578b\u7684SQL Profile\u7684\u672c\u8d28\u5c31\u662f\u9488\u5bf9\u76ee\u6807SQL\u7684\u4e00\u4e9b\u989d\u5916\u7684\u8c03\u6574\u4fe1\u606f\uff0c\u8fd9\u4e9b\u989d\u5916\u7684\u8c03\u6574\u4fe1\u606f\u9700\u8981\u4e0e\u539f\u76ee\u6807SQL\u7684\u76f8\u5173\u7edf\u8ba1\u4fe1\u606f\u7b49\u5185\u5bb9\u4e00\u8d77\u4f5c\u7528\u624d\u80fd\u5f97\u5230\u65b0\u7684\u6267\u884c\u8ba1\u5212\uff0c\u5373\u539f\u59cbSQL\u7684\u7edf\u8ba1\u4fe1\u606f\u7b49\u5185\u5bb9\u4e00\u65e6\u53d1\u751f\u53d8\u5316\uff0c\u5373\u4f7f\u539f\u6709Automatic\u7c7b\u578b\u7684SQL Profile\u5e76\u6ca1\u6709\u6539\u53d8\uff0c\u8be5SQL\u7684\u6267\u884c\u4e5f\u53ef\u80fd\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u4ece\u8fd9\u4e2a\u610f\u4e49\u4e0a\u8bb2\uff0cAutomatic\u7c7b\u578b\u7684SQL Profile\u5e76\u4e0d\u80fd\u5b8c\u5168\u8d77\u5230\u7a33\u5b9a\u76ee\u6807SQL\u7684\u6267\u884c\u8ba1\u5212\u7684\u4f5c\u7528\uff0c\u867d\u7136\u5b83\u786e\u5b9e\u53ef\u4ee5\u7528\u6765\u8c03\u6574\u6267\u884c\u8ba1\u5212\u3002<\/p>

\u770b\u4e00\u4e2a\u5728\u4e0d\u66f4\u6539\u76ee\u6807SQL\u7684SQL\u6587\u672c\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528Automatic\u7c7b\u578b\u7684SQL Profile\u6765\u8c03\u6574\u6267\u884c\u8ba1\u5212\u7684\u5b9e\u4f8b\uff1a<\/p>

\u521b\u5efa\u6d4b\u8bd5\u8868\u53ca\u76f8\u5173\u64cd\u4f5c\uff1a<\/p>

\"wKiom1i05RHQIxnlAAAiyxL16KA685.png\"<\/p>

\u4ece\u4e0a\u8ff0\u663e\u793a\u5185\u5bb9\u53ef\u4ee5\u770b\u51fa\uff0c\u76ee\u6807SQL\u8d70\u7684\u662f\u5bf9\u8868T1\u7684\u5168\u8868\u626b\u63cf(Table Access Full)\uff0c\u8fd9\u4e2a\u6267\u884c\u8ba1\u5212\u663e\u7136\u662f\u9519\u8bef\uff0c\u8fd9\u91cc\u6b63\u786e\u7684\u6267\u884c\u575f\u5893\u5e94\u8be5\u662f\u8d70\u7d22\u5f15IDX_T1\u7684\u7d22\u5f15\u8303\u56f4\u626b\u63cf(Index Range Scan)\u3002\u4e0b\u9762\u4f7f\u7528SQL Tuning Advisor\u5bf9\u8fd9\u6761SQL\u751f\u6210Automatic\u7c7b\u578b\u7684SQL Profile\u3002<\/p>

a.\u5148\u521b\u5efa\u4e00\u4e2a\u540d\u4e3amy_sql_tuning_task_2\u7684\u81ea\u52a8\u8c03\u6574\u4efb\u52a1\uff1a<\/p>

\u6ce8\uff1a\u521b\u5efa\u4efb\u52a1\u65f6\u53ef\u4ee5\u4f7f\u7528SQL\u6765\u521b\u5efa\uff0c\u53ef\u4ee5\u9002\u7528\u4e8eSQL\u6587\u672c\u957f\u7684\u60c5\u51b5\u3002\u8be6\u60c5\u53c2\u8003\u5b98\u65b9\u6587\u6863\u3002<\/p>

b.\u6267\u884c\u4e0a\u8ff0\u81ea\u52a8\u8c03\u6574\u4efb\u52a1<\/p>

c.\u67e5\u770b\u4e0a\u8ff0\u81ea\u52a8\u4efb\u52a1\u7684\u8c03\u6574\u7ed3\u679c<\/p>

\"wKiom1i06JSD9gqUAACC_GItPOE832.png\"<\/p>

\"wKiom1i06Hjy0ylYAABb5-wX0Fg685.png\"<\/p>

\u4ece\u4e0a\u8ff0\u8c03\u6574\u7ed3\u679c\u53ef\u4ee5\u770b\u5230\uff0cOracle\u73b0\u5728\u544a\u8bc9\u6211\u4eec\uff1a\u5b83\u5df2\u7ecf\u4e3a\u76ee\u6807SQL\u627e\u5230\u4e86\u66f4\u597d\u7684\u6267\u884c\u8ba1\u5212\uff0c\u5e76\u4e14\u5df2\u7ecf\u521b\u5efa\u4e86\u9488\u5bf9\u8be5SQL\u7684Automatic\u7c7b\u578b\u7684SQL Profile\u3002\u5982\u679c\u6211\u4eec\u4f7f\u7528accecp_sql_profile\u63a5\u53d7\u4e86\u8fd9\u4e2aSQL Profile\uff0c\u5219\u76ee\u6807SQL\u7684\u54cd\u5e94\u65f6\u95f4\u5c06\u4f1a\u670986.24%\u7684\u63d0\u5347\uff0c\u903b\u8f91\u8bfb\u5c06\u4f1a\u670995%\u7684\u63d0\u5347\uff0c\u5e76\u4e14\u63a5\u53d7\u4e86\u8be5SQL Profile\u540e\u76ee\u6807SQL\u7684\u6267\u884c\u8ba1\u5212\u5c06\u4f1a\u7531\u539f\u6765\u7684\u5168\u8868\u626b\u63cf\u53d8\u4e3a\u7d22\u5f15\u8303\u56f4\u626b\u63cf\u3002<\/p>

\u4e0a\u9762Automatic\u7c7b\u578b\u7684SQL Profile\u6240\u4ea7\u751f\u7684\u8c03\u6574\u7ed3\u679c\u5c31\u662f\u6211\u4eec\u60f3\u8981\u7684\uff0c\u6240\u4ee5\u73b0\u5728\u53ea\u9700\u6309Oracle\u7684\u63d0\u793a\u63a5\u53d7\u8fd9\u4e2aSQL Profile\u5373\u53ef\uff1a<\/p>

\u63a5\u53d7\u6b64SQL Profile\u540e\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u6548\u679c\uff0c\u518d\u6b21\u6267\u884c\u76ee\u6807SQL:<\/p>

\"wKiom1i065Kj_v65AAB-FIlggM0241.png\"<\/p>

\u6ce8\u610f\u5230Note\u90e8\u5206\u6709\u8fd9\u6837\u7684\u5185\u5bb9\u201cSQL profile SYS_SQLPROF_015a82b353490000 used for this statement\u201d\u8fd9\u8bf4\u660e\u6211\u4eec\u521a\u624d\u63a5\u53d7\u7684SQL Profile\u5df2\u7ecf\u8d77\u4e86\u4f5c\u7528\uff0c\u8be5SQL Profile\u7684\u540d\u5b57\u4e3aSYS_SQLPROF_015a82b353490000\u3002\u4ece\u6267\u884c\u8ba1\u5212\u4e2d\u4e5f\u53ef\u4ee5\u770b\u5230\uff0c\u6267\u884c\u8ba1\u5212\u786e\u5b9e\u5df2\u7ecf\u6539\u53d8\u4e86\u3002<\/p>

\u53e6\u5916\uff0cDBMS_SQLTUNE.ACCEPT_SQL_PROFILE\u7684\u8f93\u5165\u53c2\u6570force_match\u7684\u9ed8\u8ba4\u503c\u4e3aFALSE\uff0c\u8868\u793a\u53ea\u6709\u5728SQL\u6587\u672c\u5b8c\u5168\u5339\u914d\u7684\u60c5\u51b5\u4e0b\u624d\u4f1a\u5e94\u7528SQL Profile\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u53ea\u8981\u76ee\u6807SQL\u7684SQL\u6587\u672c\u53d1\u751f\u4e00\u70b9\u53d8\u52a8\uff0c\u539f\u6709\u7684SQL Profile\u5c06\u4f1a\u5931\u53bb\u4f5c\u7528\uff0c\u5982\u679c\u8bbe\u7f6e\u4e3aTRUE\uff0c\u5373\u4f7fSQL\u6709\u53d8\u52a8SQL Profile\u4e5f\u4f1a\u5f3a\u5236\u751f\u6548\u3002<\/p>

\u5220\u9664SQL Profile<\/p>

2. Manual\u7c7b\u578b\u7684SQL Profile<\/p>

Manual\u7c7b\u578b\u7684SQL Profile\u672c\u8d28\u4e0a\u5c31\u662f\u4e00\u5806Hint\u7684\u7ec4\u5408\uff0c\u8fd9\u4e00\u5806Hint\u7684\u7ec4\u5408\u5b9e\u9645\u4e0a\u6765\u6e90\u4e8e\u6267\u884c\u8ba1\u5212\u4e2d\u7684Outline Data\u90e8\u5206\u7684Hint\u7ec4\u5408\u3002Manual\u7c7b\u578b\u7684SQL Profile\u540c\u6837\u53ef\u4ee5\u5728\u4e0d\u66f4\u6539\u76ee\u6807SQL\u7684SQL\u6587\u672c\u7684\u60c5\u51b5\u4e0b\uff0c\u8c03\u6574\u5176\u6267\u884c\u8ba1\u5212\uff0c\u800c\u4e14\u66f4\u4e3a\u91cd\u8981\u7684\u662f\uff0cManual\u7c7b\u578b\u7684SQL Profile\u53ef\u4ee5\u8d77\u5230\u5f88\u597d\u7a33\u5b9a\u76ee\u6807SQL\u7684\u6267\u884c\u8ba1\u5212\u7684\u4f5c\u7528\uff0c\u8fd9\u4e00\u70b9\u662fAutomatic\u7c7b\u578b\u7684SQL Profile\u6240\u4e0d\u5177\u5907\u7684\u3002<\/p>

\u770b\u4e00\u4e2a\u4f7f\u7528Manual\u7c7b\u578b\u7684SQL Profile\u5b9e\u4f8b\u56fa\u5b9a\u6267\u884c\u8ba1\u5212\u7684\u5b9e\u4f8b\uff0c\u4f7f\u7528\u4e0a\u9762\u7684t1\u8868\uff0c\u5220\u9664\u4e0a\u9762\u7684SQL Profile\uff0c\u518d\u6b21\u6267\u884cSQL<\/p>

\"wKioL1i09kTDbaLYAAAon2Umz2g502.png\"<\/p>

\u4ece\u4e0a\u8ff0\u8f93\u51fa\u53ef\u4ee5\u770b\u51fa\u6267\u884c\u8ba1\u5212\u4ecd\u7136\u8d70\u5168\u8868\u626b\u63cf\u3002<\/p>

\u73b0\u5728\u6765\u521b\u5efaManual\u7c7b\u578b\u7684SQL Profile\u3002\u8fd9\u91cc\u4f7f\u7528\u4e86MOS\u4e0a\u7684\u4e00\u4e2a\u811a\u672ccoe_xfr_sql_profile.sql\u3002\u8fd9\u4e2a\u811a\u672c\u7528\u4e8e\u4eceShared Pool\u3001AWR Repository\u4e2d\u6307\u5b9aSQL\u7684\u6307\u5b9a\u6267\u884c\u8ba1\u5212\u7684Outline Data\u90e8\u5206\u7684Hint\u7ec4\u5408\uff0c\u6765\u521b\u5efaManual\u7c7b\u578b\u7684SQL Profile\u3002<\/p>

\u4f7f\u7528coe_xfr_sql_profile.sql\u811a\u672c\u7684\u6b65\u9aa4\u4e3a<\/p>

\u73b0\u5728\u6539\u5199\u4e0a\u9762\u7684SQL\uff0c\u5f3a\u5236\u8d70\u7d22\u5f15\uff1a<\/p>

\"wKioL1i09FKC2sQHAAAp5hXwOKc945.png\"<\/p>

\u4ece\u6267\u884c\u8ba1\u5212\u4e2d\u53ef\u4ee5\u770b\u51faSQL Id\u548c\u5bf9\u5e94\u7684Plan hash value\u3002<\/p>

\u5168\u8868\u626b\u63cf\u7684SQL Id\uff1a6chcc0pvvhqqm Plan hash value\uff1a3617692013<\/p>

\u7d22\u5f15\u626b\u63cf\u7684SQL Id\uff1a2ufquy7xs5nm5?Plan hash value\uff1a1369807930<\/p>

a. \u5148\u4f7f\u7528coe_xfr_sql_profile.sql\u751f\u6210\u5168\u8868\u626b\u63cfSQL\u5bf9\u5e94\u7684\u811a\u672c<\/p>

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