{"id":95888,"date":"2024-10-20T04:50:17","date_gmt":"2024-10-19T20:50:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95888\/"},"modified":"2024-10-20T04:50:18","modified_gmt":"2024-10-19T20:50:18","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e7%9a%84%e5%85%ad%e9%83%a8%e5%88%86%e4%bb%8b%e7%b4%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95888\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u6027\u80fd\u512a\u5316\u7684\u516d\u90e8\u5206\u4ecb\u7d39"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e7%9a%84%e5%85%ad%e9%83%a8%e5%88%86%e4%bb%8b%e7%b4%b9-KVXGwXctLv\">Oracle\u6578\u64da\u5eab\u6027\u80fd\u512a\u5316\u7684\u516d\u90e8\u5206\u4ecb\u7d39<\/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\u904b\u71df\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u548c\u6280\u8853\u4f86\u512a\u5316\u6027\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u516d\u500b\u95dc\u9375\u90e8\u5206\uff0c\u5e6b\u52a9\u7528\u6236\u63d0\u5347Oracle\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"1-%e7%a1%ac%e9%ab%94%e8%b3%87%e6%ba%90%e7%9a%84%e9%85%8d%e7%bd%ae-KVXGwXctLv\">1. \u786c\u9ad4\u8cc7\u6e90\u7684\u914d\u7f6e<\/h2>\n<p>\u786c\u9ad4\u8cc7\u6e90\u662f\u5f71\u97ff\u6578\u64da\u5eab\u6027\u80fd\u7684\u57fa\u790e\u3002\u9078\u64c7\u5408\u9069\u7684CPU\u3001\u5167\u5b58\u548c\u5b58\u5132\u8a2d\u5099\u81f3\u95dc\u91cd\u8981\u3002\u4e00\u822c\u4f86\u8aaa\uff0c\u589e\u52a0\u5167\u5b58\u53ef\u4ee5\u6e1b\u5c11\u78c1\u789fI\/O\u64cd\u4f5c\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002\u5efa\u8b70\u4f7f\u7528SSD\uff08\u56fa\u614b\u786c\u789f\uff09\u4f86\u66ff\u4ee3\u50b3\u7d71\u7684HDD\uff0c\u56e0\u70baSSD\u7684\u8b80\u5beb\u901f\u5ea6\u66f4\u5feb\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-KVXGwXctLv\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>-- \u6aa2\u67e5\u7576\u524d\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\nSELECT * FROM v$memory_dynamic_components;\n<\/code><\/pre>\n<h2 id=\"2-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%85%8d%e7%bd%ae%e5%8f%83%e6%95%b8%e8%aa%bf%e6%95%b4-KVXGwXctLv\">2. \u6578\u64da\u5eab\u914d\u7f6e\u53c3\u6578\u8abf\u6574<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u914d\u7f6e\u53c3\u6578\uff0c\u9019\u4e9b\u53c3\u6578\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002\u4f8b\u5982\uff0c\u8abf\u6574SGA\uff08\u7cfb\u7d71\u5168\u5c40\u5340\uff09\u548cPGA\uff08\u7a0b\u5e8f\u5168\u5c40\u5340\uff09\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-KVXGwXctLv\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>-- \u8abf\u6574SGA\u5927\u5c0f\nALTER SYSTEM SET sga_target=2G SCOPE=BOTH;\n<\/code><\/pre>\n<h2 id=\"3-%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-KVXGwXctLv\">3. \u67e5\u8a62\u512a\u5316<\/h2>\n<p>\u67e5\u8a62\u6027\u80fd\u662f\u5f71\u97ff\u6574\u9ad4\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u56e0\u7d20\u3002\u4f7f\u7528EXPLAIN PLAN\u547d\u4ee4\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5f9e\u800c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002\u5c0d\u65bc\u983b\u7e41\u4f7f\u7528\u7684\u67e5\u8a62\uff0c\u53ef\u4ee5\u8003\u616e\u5efa\u7acb\u7d22\u5f15\u4f86\u52a0\u901f\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-KVXGwXctLv\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>-- \u67e5\u770b\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\nEXPLAIN PLAN FOR SELECT * FROM employees WHERE department_id = 10;\n<\/code><\/pre>\n<h2 id=\"4-%e7%b4%a2%e5%bc%95%e7%ae%a1%e7%90%86-KVXGwXctLv\">4. \u7d22\u5f15\u7ba1\u7406<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u91cd\u8981\u5de5\u5177\uff0c\u4f46\u904e\u591a\u6216\u4e0d\u7576\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u5b9a\u671f\u6aa2\u67e5\u548c\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u4fdd\u6301\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\u3002\u4f7f\u7528DBMS_STATS\u5305\u4f86\u6536\u96c6\u7d71\u8a08\u4fe1\u606f\uff0c\u5e6b\u52a9\u512a\u5316\u67e5\u8a62\u8a08\u5283\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-KVXGwXctLv\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>-- \u6536\u96c6\u7d71\u8a08\u4fe1\u606f\nEXEC DBMS_STATS.GATHER_TABLE_STATS('HR', 'EMPLOYEES');\n<\/code><\/pre>\n<h2 id=\"5-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e8%a9%a6-KVXGwXctLv\">5. \u76e3\u63a7\u548c\u8abf\u8a66<\/h2>\n<p>\u6301\u7e8c\u76e3\u63a7\u6578\u64da\u5eab\u7684\u6027\u80fd\u662f\u78ba\u4fdd\u5176\u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\u3002\u4f7f\u7528Oracle\u63d0\u4f9b\u7684AWR\uff08\u81ea\u52d5\u5de5\u4f5c\u8ca0\u8f09\u5831\u544a\uff09\u548cASH\uff08\u6d3b\u52d5\u6703\u8a71\u6b77\u53f2\uff09\u5831\u544a\uff0c\u53ef\u4ee5\u6df1\u5165\u4e86\u89e3\u6578\u64da\u5eab\u7684\u6027\u80fd\u72c0\u6cc1\uff0c\u53ca\u6642\u767c\u73fe\u4e26\u89e3\u6c7a\u554f\u984c\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-KVXGwXctLv\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>-- \u751f\u6210AWR\u5831\u544a\n@$ORACLE_HOME\/rdbms\/admin\/awrrpt.sql\n<\/code><\/pre>\n<h2 id=\"6-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7-KVXGwXctLv\">6. \u5b9a\u671f\u7dad\u8b77<\/h2>\n<p>\u5b9a\u671f\u7684\u6578\u64da\u5eab\u7dad\u8b77\u5de5\u4f5c\uff0c\u5982\u6e05\u7406\u7121\u7528\u6578\u64da\u3001\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u548c\u91cd\u5efa\u7d22\u5f15\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u9019\u4e9b\u7dad\u8b77\u5de5\u4f5c\u61c9\u8a72\u7d0d\u5165\u65e5\u5e38\u904b\u71df\u4e2d\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u9ad8\u6548\u6027\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-KVXGwXctLv\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>-- \u6e05\u7406\u7121\u7528\u6578\u64da\nDELETE FROM employees WHERE hire_date &lt; TO_DATE(&#039;2000-01-01&#039;, &#039;YYYY-MM-DD&#039;);\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KVXGwXctLv\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u516d\u500b\u90e8\u5206\u7684\u4ecb\u7d39\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\uff0cOracle\u6578\u64da\u5eab\u7684\u6027\u80fd\u512a\u5316\u662f\u4e00\u500b\u7cfb\u7d71\u6027\u7684\u5de5\u4f5c\uff0c\u6d89\u53ca\u786c\u9ad4\u914d\u7f6e\u3001\u6578\u64da\u5eab\u53c3\u6578\u8abf\u6574\u3001\u67e5\u8a62\u512a\u5316\u3001\u7d22\u5f15\u7ba1\u7406\u3001\u76e3\u63a7\u8abf\u8a66\u548c\u5b9a\u671f\u7dad\u8b77\u7b49\u591a\u500b\u65b9\u9762\u3002\u9019\u4e9b\u63aa\u65bd\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u9084\u80fd\u78ba\u4fdd\u5176\u7a69\u5b9a\u904b\u884c\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Oracle\u6578\u64da\u5eab\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6578\u64da\u5eab\u6027\u80fd\u512a\u5316\u7684\u516d\u5927\u8981\u7d20\uff0c\u63d0\u5347\u6548\u7387\u3001\u52a0\u901f\u67e5\u8a62\uff0c\u5be6\u73fe\u6700\u4f73\u6578\u64da\u7ba1\u7406\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-95888","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95888","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=95888"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95888\/revisions"}],"predecessor-version":[{"id":95889,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95888\/revisions\/95889"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}