{"id":161917,"date":"2024-11-04T10:25:22","date_gmt":"2024-11-04T02:25:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161917\/"},"modified":"2024-11-04T10:25:23","modified_gmt":"2024-11-04T02:25:23","slug":"%e8%a8%98%e9%8c%84-oracle-%e8%aa%9e%e5%8f%a5%e5%9f%b7%e8%a1%8c%e6%99%82%e9%96%93%e7%9a%84%e7%b0%a1%e5%96%ae%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161917\/","title":{"rendered":"\u8a18\u9304 Oracle \u8a9e\u53e5\u57f7\u884c\u6642\u9593\u7684\u7c21\u55ae\u65b9\u6cd5"},"content":{"rendered":"

\u8a18\u9304 Oracle \u8a9e\u53e5\u57f7\u884c\u6642\u9593\u7684\u7c21\u55ae\u65b9\u6cd5<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e86\u89e3 SQL \u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\u5c0d\u65bc\u6027\u80fd\u8abf\u512a\u81f3\u95dc\u91cd\u8981\u3002Oracle \u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8a18\u9304\u548c\u5206\u6790 SQL \u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u638c\u63e1 SQL \u8a9e\u53e5\u7684\u6027\u80fd\u3002<\/p>\n

\u4f7f\u7528 SQL*Plus \u8a18\u9304\u57f7\u884c\u6642\u9593<\/h2>\n

SQL*Plus \u662f Oracle \u63d0\u4f9b\u7684\u4e00\u500b\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u80fd\u5920\u65b9\u4fbf\u5730\u57f7\u884c SQL \u8a9e\u53e5\u4e26\u986f\u793a\u7d50\u679c\u3002\u8981\u8a18\u9304 SQL \u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n

    \n
  1. \u555f\u52d5 SQL*Plus \u4e26\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002<\/li>\n
  2. \u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u555f\u7528\u8a08\u6642\u5668\uff1a<\/li>\n<\/ol>\n
    SET TIMING ON;<\/code><\/pre>\n
  3. \u57f7\u884c\u4f60\u7684 SQL \u8a9e\u53e5\uff0c\u4f8b\u5982\uff1a<\/li>\n
    SELECT * FROM employees;<\/code><\/pre>\n
  4. \u57f7\u884c\u5b8c\u7562\u5f8c\uff0cSQL*Plus \u6703\u986f\u793a\u8a72\u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\u3002<\/li>\n<\/ol>\n
    \u9019\u7a2e\u65b9\u6cd5\u7c21\u55ae\u76f4\u63a5\uff0c\u9069\u5408\u5feb\u901f\u6e2c\u8a66\u548c\u8abf\u8a66\u3002<\/p>\n
    \u4f7f\u7528 PL\/SQL \u8a18\u9304\u57f7\u884c\u6642\u9593<\/h2>\n
    \u5982\u679c\u9700\u8981\u5728 PL\/SQL \u7a0b\u5e8f\u4e2d\u8a18\u9304\u57f7\u884c\u6642\u9593\uff0c\u53ef\u4ee5\u4f7f\u7528\u5167\u5efa\u7684 SYSTIMESTAMP<\/code> \u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
    DECLARE\n    v_start_time TIMESTAMP;\n    v_end_time TIMESTAMP;\nBEGIN\n    v_start_time := SYSTIMESTAMP;\n\n    -- \u57f7\u884c\u4f60\u7684 SQL \u8a9e\u53e5\n    EXECUTE IMMEDIATE 'SELECT * FROM employees';\n\n    v_end_time := SYSTIMESTAMP;\n\n    DBMS_OUTPUT.PUT_LINE('\u57f7\u884c\u6642\u9593: ' || (v_end_time - v_start_time));\nEND;<\/code><\/pre>\n
    \u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 SYSTIMESTAMP<\/code> \u8a18\u9304\u958b\u59cb\u548c\u7d50\u675f\u6642\u9593\uff0c\u7136\u5f8c\u8a08\u7b97\u57f7\u884c\u6642\u9593\u4e26\u8f38\u51fa\u7d50\u679c\u3002<\/p>\n
    \u4f7f\u7528 Oracle \u7684\u81ea\u52d5\u5de5\u4f5c\u8ca0\u8f09\u5eab (AWR)<\/h2>\n
    Oracle \u7684\u81ea\u52d5\u5de5\u4f5c\u8ca0\u8f09\u5eab (AWR) \u63d0\u4f9b\u4e86\u8a73\u7d30\u7684\u6027\u80fd\u6578\u64da\uff0c\u5305\u62ec SQL \u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\u3002AWR \u6bcf\u5c0f\u6642\u81ea\u52d5\u6536\u96c6\u6027\u80fd\u6578\u64da\uff0c\u4e26\u53ef\u4ee5\u7528\u65bc\u5206\u6790\u9577\u671f\u6027\u80fd\u8da8\u52e2\u3002\u8981\u4f7f\u7528 AWR\uff0c\u60a8\u9700\u8981\u5177\u5099\u76f8\u61c9\u7684\u6b0a\u9650\uff0c\u4e26\u4e14\u9700\u8981\u5728 Oracle \u6578\u64da\u5eab\u4e2d\u555f\u7528 AWR\u3002<\/p>\n
    \u4f7f\u7528 AWR \u7684\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n
      \n
    1. \u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u751f\u6210 AWR \u5831\u544a\uff1a<\/li>\n<\/ol>\n
      SELECT * FROM DBA_HIST_SQLSTAT WHERE sql_id = '\u4f60\u7684SQL_ID';<\/code><\/pre>\n
    2. \u6839\u64da\u67e5\u8a62\u7d50\u679c\uff0c\u60a8\u53ef\u4ee5\u67e5\u770b\u8a72 SQL \u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\u548c\u5176\u4ed6\u6027\u80fd\u6307\u6a19\u3002<\/li>\n<\/ol>\n
      \u4f7f\u7528 V$SQL \u8996\u5716<\/h2>\n
      Oracle \u6578\u64da\u5eab\u9084\u63d0\u4f9b\u4e86 V$SQL<\/code> \u8996\u5716\uff0c\u8a72\u8996\u5716\u5305\u542b\u4e86\u7576\u524d\u57f7\u884c\u7684 SQL \u8a9e\u53e5\u7684\u6027\u80fd\u6578\u64da\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6 SQL \u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\uff1a<\/p>\n
      SELECT sql_text, elapsed_time, cpu_time\nFROM V$SQL\nWHERE sql_text LIKE '%\u4f60\u7684SQL\u8a9e\u53e5%';<\/code><\/pre>\n
      \u9019\u6a23\u53ef\u4ee5\u5feb\u901f\u7372\u53d6\u7279\u5b9a SQL \u8a9e\u53e5\u7684\u57f7\u884c\u6642\u9593\u548c CPU \u4f7f\u7528\u60c5\u6cc1\u3002<\/p>\n
      \u7e3d\u7d50<\/h2>\n
      \u8a18\u9304 Oracle \u8a9e\u53e5\u57f7\u884c\u6642\u9593\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u5f9e\u7c21\u55ae\u7684 SQL*Plus \u8a2d\u7f6e\u5230\u66f4\u8907\u96dc\u7684 AWR \u548c V$SQL \u67e5\u8a62\uff0c\u9019\u4e9b\u5de5\u5177\u90fd\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u7406\u89e3\u548c\u512a\u5316 SQL \u8a9e\u53e5\u7684\u6027\u80fd\u3002\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6548\u7387\uff0c\u5f9e\u800c\u63d0\u5347\u6574\u9ad4\u7cfb\u7d71\u7684\u6027\u80fd\u3002<\/p>\n
      \u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u6211\u5011\u7684 \u4e91\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u63a2\u7d22\u8a18\u9304 Oracle \u8a9e\u53e5\u57f7\u884c\u6642\u9593\u7684\u7c21\u55ae\u65b9\u6cd5\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u80fd\uff0c\u512a\u5316\u8cc7\u6599\u5eab\u7ba1\u7406\uff0c\u8b93\u958b\u767c\u66f4\u9ad8\u6548\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-161917","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161917","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=161917"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161917\/revisions"}],"predecessor-version":[{"id":161918,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161917\/revisions\/161918"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}