{"id":172625,"date":"2024-11-07T14:41:20","date_gmt":"2024-11-07T06:41:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172625\/"},"modified":"2024-11-07T14:41:21","modified_gmt":"2024-11-07T06:41:21","slug":"%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%abpga%e4%bf%a1%e6%81%af-%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%abpga","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172625\/","title":{"rendered":"\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eabpga\u4fe1\u606f (\u67e5\u770b\u6578\u64da\u5eabpga)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%abpga%e4%bf%a1%e6%81%af-%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%abpga-RDvxBvWhbC\">\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eabPGA\u4fe1\u606f (\u67e5\u770b\u6578\u64da\u5eabPGA)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e86\u89e3\u7a0b\u5e8f\u5168\u5c40\u5340\uff08PGA, Program Global Area\uff09\u7684\u4fe1\u606f\u5c0d\u65bc\u6027\u80fd\u8abf\u512a\u548c\u8cc7\u6e90\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002PGA\u662f\u4e00\u500b\u5167\u5b58\u5340\u57df\uff0c\u7528\u65bc\u5b58\u5132\u8207\u6578\u64da\u5eab\u6703\u8a71\u76f8\u95dc\u7684\u6578\u64da\u548c\u63a7\u5236\u4fe1\u606f\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684PGA\u4fe1\u606f\uff0c\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u76e3\u63a7\u548c\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<h2 id=\"pga%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-RDvxBvWhbC\">PGA\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>PGA\u662fOracle\u6578\u64da\u5eab\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u6982\u5ff5\uff0c\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u7528\u6236\u6703\u8a71\u7684\u79c1\u6709\u6578\u64da\u3002\u9019\u4e9b\u6578\u64da\u5305\u62ec\u6392\u5e8f\u5340\u3001\u54c8\u5e0c\u5340\u3001\u6e38\u6a19\u72c0\u614b\u7b49\u3002PGA\u7684\u5927\u5c0f\u548c\u4f7f\u7528\u60c5\u6cc1\u76f4\u63a5\u5f71\u97ff\u5230\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u56e0\u6b64\u5b9a\u671f\u6aa2\u67e5PGA\u7684\u72c0\u614b\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e7%9c%8bpga%e4%bf%a1%e6%81%af%e7%9a%84%e6%96%b9%e6%b3%95-RDvxBvWhbC\">\u67e5\u770bPGA\u4fe1\u606f\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u5f0f\u67e5\u770bPGA\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8vpgastat%e8%a6%96%e5%9c%96-RDvxBvWhbC\">1. \u4f7f\u7528V$PGASTAT\u8996\u5716<\/h3>\n<p>V$PGASTAT\u8996\u5716\u63d0\u4f9b\u4e86PGA\u7684\u7d71\u8a08\u4fe1\u606f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u67e5\u770bPGA\u7684\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n<pre><code>SELECT * FROM V$PGASTAT;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56dePGA\u7684\u5404\u7a2e\u7d71\u8a08\u6578\u64da\uff0c\u5305\u62ec\u7e3d\u5927\u5c0f\u3001\u5df2\u4f7f\u7528\u5927\u5c0f\u548c\u7a7a\u9592\u5927\u5c0f\u7b49\u3002\u7279\u5225\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u500b\u91cd\u8981\u5b57\u6bb5\uff1a<\/p>\n<ul>\n<li><strong>total PGA allocated:<\/strong> \u7e3d\u5206\u914d\u7684PGA\u5927\u5c0f\u3002<\/li>\n<li><strong>total PGA in use:<\/strong> \u7576\u524d\u4f7f\u7528\u7684PGA\u5927\u5c0f\u3002<\/li>\n<li><strong>maximum PGA allocated:<\/strong> \u6700\u5927\u5206\u914d\u7684PGA\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8vprocess%e8%a6%96%e5%9c%96-RDvxBvWhbC\">2. \u4f7f\u7528V$PROCESS\u8996\u5716<\/h3>\n<p>V$PROCESS\u8996\u5716\u63d0\u4f9b\u4e86\u7576\u524d\u6240\u6709\u9032\u7a0b\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u6bcf\u500b\u9032\u7a0b\u4f7f\u7528\u7684PGA\u5927\u5c0f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6\u9019\u4e9b\u4fe1\u606f\uff1a<\/p>\n<pre><code>SELECT p.pid, p.pga_used_mem, p.pga_alloc_mem\nFROM V$PROCESS p;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u986f\u793a\u6bcf\u500b\u9032\u7a0b\u7684PGA\u4f7f\u7528\u60c5\u6cc1\uff0c\u5e6b\u52a9\u7ba1\u7406\u54e1\u8b58\u5225\u54ea\u4e9b\u9032\u7a0b\u6d88\u8017\u4e86\u904e\u591a\u7684PGA\u8cc7\u6e90\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8vsession%e8%a6%96%e5%9c%96-RDvxBvWhbC\">3. \u4f7f\u7528V$SESSION\u8996\u5716<\/h3>\n<p>V$SESSION\u8996\u5716\u63d0\u4f9b\u4e86\u7576\u524d\u6240\u6709\u6703\u8a71\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u6bcf\u500b\u6703\u8a71\u7684PGA\u4f7f\u7528\u60c5\u6cc1\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u67e5\u770b\uff1a<\/p>\n<pre><code>SELECT s.sid, s.pga_used_mem, s.pga_alloc_mem\nFROM V$SESSION s;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5e6b\u52a9\u7ba1\u7406\u54e1\u4e86\u89e3\u54ea\u4e9b\u6703\u8a71\u6b63\u5728\u6d88\u8017\u5927\u91cf\u7684PGA\u8cc7\u6e90\uff0c\u5f9e\u800c\u9032\u884c\u76f8\u61c9\u7684\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e5%84%aa%e5%8c%96pga%e4%bd%bf%e7%94%a8%e7%9a%84%e5%bb%ba%e8%ad%b0-RDvxBvWhbC\">\u512a\u5316PGA\u4f7f\u7528\u7684\u5efa\u8b70<\/h2>\n<p>\u5728\u67e5\u770bPGA\u4fe1\u606f\u5f8c\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9032\u884c\u512a\u5316\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316PGA\u4f7f\u7528\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u8abf\u6574PGA\u5927\u5c0f\uff1a<\/strong>\u6839\u64da\u5be6\u969b\u9700\u6c42\u8abf\u6574PGA\u7684\u5927\u5c0f\uff0c\u4ee5\u78ba\u4fdd\u6709\u8db3\u5920\u7684\u5167\u5b58\u4f9b\u7528\u6236\u6703\u8a71\u4f7f\u7528\u3002<\/li>\n<li><strong>\u76e3\u63a7\u9577\u6642\u9593\u904b\u884c\u7684\u67e5\u8a62\uff1a<\/strong>\u5b9a\u671f\u6aa2\u67e5\u9577\u6642\u9593\u904b\u884c\u7684\u67e5\u8a62\uff0c\u78ba\u4fdd\u5b83\u5011\u4e0d\u6703\u4f54\u7528\u904e\u591a\u7684PGA\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u4f7f\u7528\u9069\u7576\u7684\u6392\u5e8f\u548c\u54c8\u5e0c\u65b9\u6cd5\uff1a<\/strong>\u6839\u64da\u6578\u64da\u7684\u7279\u6027\u9078\u64c7\u5408\u9069\u7684\u6392\u5e8f\u548c\u54c8\u5e0c\u65b9\u6cd5\uff0c\u4ee5\u6e1b\u5c11PGA\u7684\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RDvxBvWhbC\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684PGA\u4fe1\u606f\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u901a\u904e\u4f7f\u7528V$PGASTAT\u3001V$PROCESS\u548cV$SESSION\u7b49\u8996\u5716\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u7372\u53d6\u6709\u95dcPGA\u4f7f\u7528\u60c5\u6cc1\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u4e26\u6839\u64da\u9019\u4e9b\u4fe1\u606f\u9032\u884c\u6027\u80fd\u8abf\u512a\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u89e3\u6c7a\u65b9\u6848\u4e5f\u80fd\u9032\u4e00\u6b65\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684PGA\u4fe1\u606f\uff0c\u638c\u63e1\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff0c\u512a\u5316\u6027\u80fd\uff0c\u63d0\u5347\u6578\u64da\u5eab\u904b\u884c\u6548\u7387\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-172625","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172625","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=172625"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172625\/revisions"}],"predecessor-version":[{"id":172626,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172625\/revisions\/172626"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=172625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=172625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=172625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}