{"id":154475,"date":"2024-11-02T16:07:20","date_gmt":"2024-11-02T08:07:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154475\/"},"modified":"2024-11-02T16:07:21","modified_gmt":"2024-11-02T08:07:21","slug":"%e5%b0%8d-db2-%e7%9b%a3%e8%a6%96%e5%99%a8%e5%a0%86%e4%bd%bf%e7%94%a8%e7%8e%87%e5%95%8f%e9%a1%8c%e7%9a%84%e5%85%b7%e9%ab%94%e6%8f%8f%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154475\/","title":{"rendered":"\u5c0d DB2 \u76e3\u8996\u5668\u5806\u4f7f\u7528\u7387\u554f\u984c\u7684\u5177\u9ad4\u63cf\u8ff0"},"content":{"rendered":"<h1 id=\"%e5%b0%8d-db2-%e7%9b%a3%e8%a6%96%e5%99%a8%e5%a0%86%e4%bd%bf%e7%94%a8%e7%8e%87%e5%95%8f%e9%a1%8c%e7%9a%84%e5%85%b7%e9%ab%94%e6%8f%8f%e8%bf%b0-SYEuHgWpYM\">\u5c0d DB2 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id=\"%e7%9b%a3%e8%a6%96%e5%99%a8%e5%a0%86%e4%bd%bf%e7%94%a8%e7%8e%87%e9%81%8e%e9%ab%98%e7%9a%84%e5%8e%9f%e5%9b%a0-SYEuHgWpYM\">\u76e3\u8996\u5668\u5806\u4f7f\u7528\u7387\u904e\u9ad8\u7684\u539f\u56e0<\/h2>\n<p>\u76e3\u8996\u5668\u5806\u4f7f\u7528\u7387\u904e\u9ad8\u7684\u539f\u56e0\u53ef\u80fd\u6709\u591a\u7a2e\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u67e5\u8a62\u6027\u80fd\u4e0d\u4f73\uff1a<\/strong>\u5982\u679c SQL \u67e5\u8a62\u672a\u7d93\u512a\u5316\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5927\u91cf\u7684\u76e3\u8996\u5668\u5806\u4f7f\u7528\u3002<\/li>\n<li><strong>\u4e0d\u7576\u7684\u914d\u7f6e\uff1a<\/strong>DB2 \u7684\u914d\u7f6e\u53c3\u6578\u5982\u679c\u8a2d\u7f6e\u4e0d\u7576\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u76e3\u8996\u5668\u5806\u7684\u8cc7\u6e90\u6d6a\u8cbb\u3002<\/li>\n<li><strong>\u9ad8\u4e26\u767c\u8a2a\u554f\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e0b\uff0c\u76e3\u8996\u5668\u5806\u7684\u4f7f\u7528\u7387\u6703\u8fc5\u901f\u4e0a\u5347\u3002<\/li>\n<li><strong>\u9577\u6642\u9593\u904b\u884c\u7684\u4e8b\u52d9\uff1a<\/strong>\u9577\u6642\u9593\u904b\u884c\u7684\u4e8b\u52d9\u6703\u4f54\u7528\u5927\u91cf\u7684\u76e3\u8996\u5668\u5806\u8cc7\u6e90\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e7%9b%a3%e6%8e%a7%e5%92%8c%e7%ae%a1%e7%90%86%e7%9b%a3%e8%a6%96%e5%99%a8%e5%a0%86%e4%bd%bf%e7%94%a8%e7%8e%87-SYEuHgWpYM\">\u5982\u4f55\u76e3\u63a7\u548c\u7ba1\u7406\u76e3\u8996\u5668\u5806\u4f7f\u7528\u7387<\/h2>\n<p>\u70ba\u4e86\u6709\u6548\u5730\u7ba1\u7406 DB2 \u76e3\u8996\u5668\u5806\u7684\u4f7f\u7528\u7387\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-db2-%e7%9b%a3%e6%8e%a7%e5%b7%a5%e5%85%b7-SYEuHgWpYM\">1. \u4f7f\u7528 DB2 \u76e3\u63a7\u5de5\u5177<\/h3>\n<p>DB2 \u63d0\u4f9b\u4e86\u591a\u7a2e\u76e3\u63a7\u5de5\u5177\uff0c\u5982 DB2 Control Center \u548c DB2 Performance Expert\uff0c\u9019\u4e9b\u5de5\u5177\u53ef\u4ee5\u5e6b\u52a9\u7ba1\u7406\u54e1\u5be6\u6642\u76e3\u63a7\u76e3\u8996\u5668\u5806\u7684\u4f7f\u7528\u60c5\u6cc1\u3002\u901a\u904e\u9019\u4e9b\u5de5\u5177\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u7372\u53d6\u6709\u95dc\u76e3\u8996\u5668\u5806\u4f7f\u7528\u7387\u7684\u8a73\u7d30\u5831\u544a\uff0c\u4e26\u53ca\u6642\u767c\u73fe\u554f\u984c\u3002<\/p>\n<h3 id=\"2-%e5%84%aa%e5%8c%96-sql-%e6%9f%a5%e8%a9%a2-SYEuHgWpYM\">2. \u512a\u5316 SQL \u67e5\u8a62<\/h3>\n<p>\u5c0d\u65bc\u6027\u80fd\u4e0d\u4f73\u7684 SQL \u67e5\u8a62\uff0c\u7ba1\u7406\u54e1\u61c9\u8a72\u9032\u884c\u512a\u5316\u3002\u53ef\u4ee5\u4f7f\u7528 EXPLAIN \u547d\u4ee4\u4f86\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u4e26\u6839\u64da\u5206\u6790\u7d50\u679c\u9032\u884c\u8abf\u6574\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>EXPLAIN PLAN FOR\nSELECT * FROM employees WHERE department = 'Sales';<\/code><\/pre>\n<p>\u901a\u904e\u512a\u5316\u67e5\u8a62\uff0c\u53ef\u4ee5\u6e1b\u5c11\u76e3\u8996\u5668\u5806\u7684\u4f7f\u7528\u7387\u3002<\/p>\n<h3 id=\"3-%e8%aa%bf%e6%95%b4-db2-%e9%85%8d%e7%bd%ae%e5%8f%83%e6%95%b8-SYEuHgWpYM\">3. \u8abf\u6574 DB2 \u914d\u7f6e\u53c3\u6578<\/h3>\n<p>DB2 \u63d0\u4f9b\u4e86\u591a\u500b\u914d\u7f6e\u53c3\u6578\u4f86\u8abf\u6574\u76e3\u8996\u5668\u5806\u7684\u5927\u5c0f\u548c\u4f7f\u7528\u65b9\u5f0f\u3002\u7ba1\u7406\u54e1\u53ef\u4ee5\u6839\u64da\u5be6\u969b\u9700\u6c42\u8abf\u6574\u9019\u4e9b\u53c3\u6578\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>UPDATE DB CFG USING MON_HEAP_SZ 2000;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u589e\u52a0\u76e3\u8996\u5668\u5806\u7684\u5927\u5c0f\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h3 id=\"4-%e5%ae%9a%e6%9c%9f%e6%b8%85%e7%90%86%e5%92%8c%e9%87%8d%e5%95%9f-SYEuHgWpYM\">4. \u5b9a\u671f\u6e05\u7406\u548c\u91cd\u555f<\/h3>\n<p>\u5b9a\u671f\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u548c\u91cd\u555f DB2 \u5be6\u4f8b\u53ef\u4ee5\u91cb\u653e\u88ab\u4f54\u7528\u7684\u76e3\u8996\u5668\u5806\u8cc7\u6e90\uff0c\u5f9e\u800c\u964d\u4f4e\u4f7f\u7528\u7387\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-SYEuHgWpYM\">\u7d50\u8ad6<\/h2>\n<p>DB2 \u76e3\u8996\u5668\u5806\u7684\u4f7f\u7528\u7387\u554f\u984c\u662f\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u4e0d\u53ef\u5ffd\u8996\u7684\u4e00\u90e8\u5206\u3002\u901a\u904e\u6709\u6548\u7684\u76e3\u63a7\u3001\u67e5\u8a62\u512a\u5316\u3001\u914d\u7f6e\u8abf\u6574\u548c\u5b9a\u671f\u7dad\u8b77\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u6709\u6548\u5730\u964d\u4f4e\u76e3\u8996\u5668\u5806\u7684\u4f7f\u7528\u7387\uff0c\u5f9e\u800c\u63d0\u5347\u6574\u9ad4\u6578\u64da\u5eab\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u5c07\u6709\u52a9\u65bc\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u904b\u884c\u548c\u9ad8\u6548\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eDB2\u76e3\u8996\u5668\u5806\u4f7f\u7528\u7387\u554f\u984c\uff0c\u5206\u6790\u5176\u5f71\u97ff\u56e0\u7d20\u53ca\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u7cfb\u7d71\u6548\u80fd\u8207\u7a69\u5b9a\u6027\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-154475","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154475","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=154475"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154475\/revisions"}],"predecessor-version":[{"id":154476,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154475\/revisions\/154476"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=154475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=154475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=154475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}