{"id":172211,"date":"2024-11-07T11:14:25","date_gmt":"2024-11-07T03:14:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172211\/"},"modified":"2024-11-07T11:14:26","modified_gmt":"2024-11-07T03:14:26","slug":"%e8%ae%93db2%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%8d%e6%89%80%e6%9c%89%e5%85%a7%e5%ad%98%e9%80%b2%e8%a1%8c%e4%bd%bf%e7%94%a8%e7%9a%84%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172211\/","title":{"rendered":"\u8b93DB2\u6578\u64da\u5eab\u5c0d\u6240\u6709\u5167\u5b58\u9032\u884c\u4f7f\u7528\u7684\u65b9\u6848"},"content":{"rendered":"<h1 id=\"%e8%ae%93db2%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b0%8d%e6%89%80%e6%9c%89%e5%85%a7%e5%ad%98%e9%80%b2%e8%a1%8c%e4%bd%bf%e7%94%a8%e7%9a%84%e6%96%b9%e6%a1%88-aGXivNModm\">\u8b93DB2\u6578\u64da\u5eab\u5c0d\u6240\u6709\u5167\u5b58\u9032\u884c\u4f7f\u7528\u7684\u65b9\u6848<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u4f01\u696d\u7684\u6210\u529f\u81f3\u95dc\u91cd\u8981\u3002IBM\u7684DB2\u6578\u64da\u5eab\u662f\u4e00\u500b\u5f37\u5927\u7684\u95dc\u4fc2\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u884c\u696d\u3002\u70ba\u4e86\u5145\u5206\u767c\u63eeDB2\u7684\u6027\u80fd\uff0c\u5408\u7406\u914d\u7f6e\u5167\u5b58\u4f7f\u7528\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u8b93DB2\u6578\u64da\u5eab\u6709\u6548\u5229\u7528\u6240\u6709\u53ef\u7528\u5167\u5b58\u7684\u65b9\u6848\u3002<\/p>\n<h2 id=\"1-%e4%ba%86%e8%a7%a3db2%e5%85%a7%e5%ad%98%e7%b5%90%e6%a7%8b-aGXivNModm\">1. \u4e86\u89e3DB2\u5167\u5b58\u7d50\u69cb<\/h2>\n<p>\u5728\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u512a\u5316\u5167\u5b58\u4f7f\u7528\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3DB2\u7684\u5167\u5b58\u7d50\u69cb\u3002DB2\u7684\u5167\u5b58\u7ba1\u7406\u4e3b\u8981\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><strong>\u5168\u5c40\u5167\u5b58\u5340\uff08Buffer Pool\uff09<\/strong>\uff1a\u7528\u65bc\u7de9\u5b58\u6578\u64da\u9801\uff0c\u6e1b\u5c11\u78c1\u789fI\/O\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u6392\u5e8f\u5167\u5b58\uff08Sort Heap\uff09<\/strong>\uff1a\u7528\u65bc\u57f7\u884c\u6392\u5e8f\u64cd\u4f5c\u6642\u7684\u5167\u5b58\u9700\u6c42\u3002<\/li>\n<li><strong>\u67e5\u8a62\u5167\u5b58\uff08Package Cache\uff09<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u57f7\u884c\u8a08\u5283\u548c\u67e5\u8a62\u7d50\u679c\u3002<\/li>\n<li><strong>\u61c9\u7528\u7a0b\u5e8f\u5167\u5b58\uff08Application Heap\uff09<\/strong>\uff1a\u7528\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u904b\u884c\u6642\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e9%85%8d%e7%bd%aedb2%e5%85%a7%e5%ad%98%e5%8f%83%e6%95%b8-aGXivNModm\">2. \u914d\u7f6eDB2\u5167\u5b58\u53c3\u6578<\/h2>\n<p>\u70ba\u4e86\u8b93DB2\u5145\u5206\u5229\u7528\u6240\u6709\u5167\u5b58\uff0c\u5fc5\u9808\u6839\u64da\u7cfb\u7d71\u7684\u53ef\u7528\u5167\u5b58\u4f86\u914d\u7f6e\u76f8\u95dc\u53c3\u6578\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u95dc\u9375\u7684\u5167\u5b58\u53c3\u6578\u53ca\u5176\u914d\u7f6e\u5efa\u8b70\uff1a<\/p>\n<h3 id=\"2-1-%e8%a8%ad%e7%bd%aebufferpool%e5%a4%a7%e5%b0%8f-aGXivNModm\">2.1 \u8a2d\u7f6eBUFFERPOOL\u5927\u5c0f<\/h3>\n<p>BUFFERPOOL\u662fDB2\u4e2d\u6700\u91cd\u8981\u7684\u5167\u5b58\u5340\u57df\u4e4b\u4e00\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u547d\u4ee4\u4f86\u8a2d\u7f6eBUFFERPOOL\u7684\u5927\u5c0f\uff1a<\/p>\n<pre><code>ALTER BUFFERPOOL bp_name SIZE n<\/code><\/pre>\n<p>\u5176\u4e2d\uff0cbp_name\u662fBUFFERPOOL\u7684\u540d\u7a31\uff0cn\u662f\u6240\u9700\u7684\u9801\u6578\u3002\u5efa\u8b70\u5c07BUFFERPOOL\u7684\u5927\u5c0f\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u768450%\u81f370%\u3002<\/p>\n<h3 id=\"2-2-%e8%aa%bf%e6%95%b4sortheap-aGXivNModm\">2.2 \u8abf\u6574SORTHEAP<\/h3>\n<p>SORTHEAP\u53c3\u6578\u6c7a\u5b9a\u4e86DB2\u5728\u57f7\u884c\u6392\u5e8f\u64cd\u4f5c\u6642\u53ef\u7528\u7684\u5167\u5b58\u91cf\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u9032\u884c\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>UPDATE DB CFG USING SORTHEAP n<\/code><\/pre>\n<p>\u9019\u88e1\u7684n\u662f\u6240\u9700\u7684\u5167\u5b58\u5927\u5c0f\uff08\u4ee5KB\u70ba\u55ae\u4f4d\uff09\u3002\u6839\u64da\u67e5\u8a62\u7684\u8907\u96dc\u6027\uff0cSORTHEAP\u7684\u5927\u5c0f\u53ef\u4ee5\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u76845%\u81f310%\u3002<\/p>\n<h3 id=\"2-3-%e9%85%8d%e7%bd%aepackage-cache-aGXivNModm\">2.3 \u914d\u7f6ePACKAGE CACHE<\/h3>\n<p>PACKAGE CACHE\u7528\u65bc\u5b58\u5132\u57f7\u884c\u8a08\u5283\uff0c\u9069\u7576\u7684\u914d\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u9032\u884c\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>UPDATE DB CFG USING PCKCACHESZ n<\/code><\/pre>\n<p>\u5efa\u8b70\u5c07PACKAGE CACHE\u7684\u5927\u5c0f\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u768410%\u81f315%\u3002<\/p>\n<h2 id=\"3-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4%e5%85%a7%e5%ad%98%e4%bd%bf%e7%94%a8-aGXivNModm\">3. \u76e3\u63a7\u548c\u8abf\u6574\u5167\u5b58\u4f7f\u7528<\/h2>\n<p>\u914d\u7f6e\u5b8c\u5167\u5b58\u53c3\u6578\u5f8c\uff0c\u6301\u7e8c\u76e3\u63a7DB2\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u4f7f\u7528DB2\u7684\u76e3\u63a7\u5de5\u5177\u4f86\u67e5\u770b\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff0c\u4e26\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u76e3\u63a7\u547d\u4ee4\uff1a<\/p>\n<ul>\n<li><strong>db2pd<\/strong>\uff1a\u7528\u65bc\u67e5\u770b\u7576\u524d\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u3002<\/li>\n<li><strong>db2 get db cfg<\/strong>\uff1a\u67e5\u770b\u6578\u64da\u5eab\u914d\u7f6e\u53c3\u6578\u3002<\/li>\n<\/ul>\n<p>\u6839\u64da\u76e3\u63a7\u7d50\u679c\uff0c\u5b9a\u671f\u8abf\u6574\u5167\u5b58\u53c3\u6578\uff0c\u4ee5\u78ba\u4fddDB2\u80fd\u5920\u5145\u5206\u5229\u7528\u6240\u6709\u53ef\u7528\u5167\u5b58\u3002<\/p>\n<h2 id=\"4-%e7%b5%90%e8%ab%96-aGXivNModm\">4. \u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u5408\u7406\u914d\u7f6eDB2\u7684\u5167\u5b58\u53c3\u6578\uff0c\u4f01\u696d\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u97ff\u61c9\u901f\u5ea6\u3002\u4e86\u89e3DB2\u7684\u5167\u5b58\u7d50\u69cb\u3001\u8abf\u6574BUFFERPOOL\u3001SORTHEAP\u548cPACKAGE CACHE\u7b49\u53c3\u6578\uff0c\u4e26\u6301\u7e8c\u76e3\u63a7\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff0c\u5c07\u6709\u52a9\u65bc\u5be6\u73fe\u6700\u4f73\u7684\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u512a\u5316\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684DB2\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22DB2\u6578\u64da\u5eab\u7684\u5167\u5b58\u4f7f\u7528\u65b9\u6848\uff0c\u63d0\u5347\u6027\u80fd\u8207\u6548\u7387\uff0c\u78ba\u4fdd\u8cc7\u6e90\u6700\u4f73\u5316\u914d\u7f6e\uff0c\u5be6\u73fe\u6578\u64da\u8655\u7406\u7684\u6700\u4f73\u6548\u679c\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-172211","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172211","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=172211"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172211\/revisions"}],"predecessor-version":[{"id":172212,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172211\/revisions\/172212"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=172211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=172211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=172211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}