{"id":60779,"date":"2024-10-13T05:44:13","date_gmt":"2024-10-12T21:44:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60779\/"},"modified":"2024-10-13T05:44:13","modified_gmt":"2024-10-12T21:44:13","slug":"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a2%ba%e5%ae%9a%e6%9f%90%e5%80%8b%e8%a1%a8%e7%9a%84%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%e7%9a%84%e6%94%b6%e9%9b%86%e6%99%82%e9%96%93%e7%9a%84%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60779\/","title":{"rendered":"DB2\u6578\u64da\u5eab\u78ba\u5b9a\u67d0\u500b\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\u6642\u9593\u7684\u64cd\u4f5c"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a2%ba%e5%ae%9a%e6%9f%90%e5%80%8b%e8%a1%a8%e7%9a%84%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%e7%9a%84%e6%94%b6%e9%9b%86%e6%99%82%e9%96%93%e7%9a%84%e6%93%8d%e4%bd%9c-gIQSGDuxXH\">DB2\u6578\u64da\u5eab\u78ba\u5b9a\u67d0\u500b\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\u6642\u9593\u7684\u64cd\u4f5c<\/h1>\n<p>\u5728DB2\u6578\u64da\u5eab\u4e2d\uff0c\u7d71\u8a08\u4fe1\u606f\u5c0d\u65bc\u67e5\u8a62\u512a\u5316\u548c\u6027\u80fd\u8abf\u6574\u81f3\u95dc\u91cd\u8981\u3002\u9019\u4e9b\u7d71\u8a08\u4fe1\u606f\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u9078\u64c7\u6700\u4f73\u7684\u67e5\u8a62\u57f7\u884c\u8a08\u5283\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u78ba\u5b9a\u67d0\u500b\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\u6642\u9593\uff0c\u4ee5\u53ca\u76f8\u95dc\u7684\u64cd\u4f5c\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%ef%bc%9f-gIQSGDuxXH\">\u4ec0\u9ebc\u662f\u7d71\u8a08\u4fe1\u606f\uff1f<\/h2>\n<p>\u7d71\u8a08\u4fe1\u606f\u662f\u63cf\u8ff0\u6578\u64da\u8868\u4e2d\u6578\u64da\u5206\u4f48\u7684\u6578\u64da\u3002\u9019\u4e9b\u4fe1\u606f\u5305\u62ec\u884c\u6578\u3001\u5217\u6578\u3001\u552f\u4e00\u503c\u7684\u6578\u91cf\u3001\u6578\u64da\u7684\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c\u7b49\u3002DB2\u4f7f\u7528\u9019\u4e9b\u7d71\u8a08\u4fe1\u606f\u4f86\u4f30\u7b97\u67e5\u8a62\u7684\u6210\u672c\uff0c\u5f9e\u800c\u9078\u64c7\u6700\u4f73\u7684\u57f7\u884c\u8a08\u5283\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%94%b6%e9%9b%86%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%ef%bc%9f-gIQSGDuxXH\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6536\u96c6\u7d71\u8a08\u4fe1\u606f\uff1f<\/h2>\n<ul>\n<li><strong>\u67e5\u8a62\u6027\u80fd\uff1a<\/strong>\u6e96\u78ba\u7684\u7d71\u8a08\u4fe1\u606f\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u6e1b\u5c11\u57f7\u884c\u6642\u9593\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u7ba1\u7406\uff1a<\/strong>\u901a\u904e\u4e86\u89e3\u6578\u64da\u7684\u5206\u4f48\uff0cDB2\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u7ba1\u7406\u5167\u5b58\u548cI\/O\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u81ea\u52d5\u5316\u512a\u5316\uff1a<\/strong>DB2\u7684\u67e5\u8a62\u512a\u5316\u5668\u4f9d\u8cf4\u65bc\u7d71\u8a08\u4fe1\u606f\u4f86\u81ea\u52d5\u9078\u64c7\u6700\u4f73\u7684\u57f7\u884c\u8def\u5f91\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e7%a2%ba%e5%ae%9a%e6%9f%90%e5%80%8b%e8%a1%a8%e7%9a%84%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%e7%9a%84%e6%94%b6%e9%9b%86%e6%99%82%e9%96%93-gIQSGDuxXH\">\u5982\u4f55\u78ba\u5b9a\u67d0\u500b\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\u6642\u9593<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u78ba\u5b9a\u67d0\u500b\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\u6642\u9593\uff1a<\/p>\n<pre><code>SELECT \n    TABNAME, \n    STATS_TIME \nFROM \n    SYSIBM.SYSTABLES \nWHERE \n    TABNAME = '\u60a8\u7684\u8868\u540d';<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u60a8\u9700\u8981\u5c07\u201c\u60a8\u7684\u8868\u540d\u201d\u66ff\u63db\u70ba\u60a8\u60f3\u8981\u67e5\u8a62\u7684\u5177\u9ad4\u8868\u540d\u3002\u67e5\u8a62\u7d50\u679c\u5c07\u986f\u793a\u8a72\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u6700\u5f8c\u4e00\u6b21\u6536\u96c6\u7684\u6642\u9593\u3002<\/p>\n<h2 id=\"%e6%94%b6%e9%9b%86%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af%e7%9a%84%e6%93%8d%e4%bd%9c-gIQSGDuxXH\">\u6536\u96c6\u7d71\u8a08\u4fe1\u606f\u7684\u64cd\u4f5c<\/h2>\n<p>\u5982\u679c\u60a8\u767c\u73fe\u7d71\u8a08\u4fe1\u606f\u904e\u6642\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u6536\u96c6\u6700\u65b0\u7684\u7d71\u8a08\u4fe1\u606f\uff1a<\/p>\n<pre><code>RUNSTATS ON TABLE \u60a8\u7684\u8868\u540d;<\/code><\/pre>\n<p>\u9019\u500b\u547d\u4ee4\u5c07\u6703\u5c0d\u6307\u5b9a\u7684\u8868\u9032\u884c\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\u3002\u60a8\u4e5f\u53ef\u4ee5\u9078\u64c7\u6536\u96c6\u7279\u5b9a\u5217\u7684\u7d71\u8a08\u4fe1\u606f\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>RUNSTATS ON TABLE \u60a8\u7684\u8868\u540d WITH DISTRIBUTION AND DETAILED INDEXES ALL;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u547d\u4ee4\u5c07\u6703\u6536\u96c6\u66f4\u8a73\u7d30\u7684\u7d71\u8a08\u4fe1\u606f\uff0c\u5305\u62ec\u7d22\u5f15\u7684\u5206\u4f48\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-gIQSGDuxXH\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u9ad8\u8ca0\u8f09\u7684\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u5efa\u8b70\u5728\u4f4e\u5cf0\u6642\u6bb5\u57f7\u884c\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\uff0c\u4ee5\u907f\u514d\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u548c\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u662f\u4fdd\u6301\u6578\u64da\u5eab\u6027\u80fd\u7684\u6700\u4f73\u5be6\u8e10\u3002<\/li>\n<li>\u4f7f\u7528\u81ea\u52d5\u5316\u5de5\u5177\u4f86\u5b9a\u671f\u6536\u96c6\u7d71\u8a08\u4fe1\u606f\uff0c\u53ef\u4ee5\u6e1b\u5c11\u624b\u52d5\u64cd\u4f5c\u7684\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-gIQSGDuxXH\">\u7d50\u8ad6<\/h2>\n<p>\u78ba\u5b9aDB2\u6578\u64da\u5eab\u4e2d\u67d0\u500b\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u7684\u6536\u96c6\u6642\u9593\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u80fd\u5920\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u7dad\u6301\u7cfb\u7d71\u7684\u6027\u80fd\u3002\u901a\u904e\u5b9a\u671f\u6536\u96c6\u548c\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u67e5\u8a62\u512a\u5316\u5668\u80fd\u5920\u505a\u51fa\u6700\u4f73\u7684\u6c7a\u7b56\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7684\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728DB2\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u7279\u5b9a\u8868\u7684\u7d71\u8a08\u4fe1\u606f\u6536\u96c6\u6642\u9593\uff0c\u78ba\u4fdd\u6578\u64da\u5206\u6790\u7684\u6e96\u78ba\u6027\u8207\u6642\u6548\u6027\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-60779","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60779","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=60779"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60779\/revisions"}],"predecessor-version":[{"id":60780,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60779\/revisions\/60780"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}