{"id":168287,"date":"2024-11-06T11:07:24","date_gmt":"2024-11-06T03:07:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168287\/"},"modified":"2024-11-06T11:07:24","modified_gmt":"2024-11-06T03:07:24","slug":"%e6%af%8f%e5%80%8boracle-dba%e9%83%bd%e6%87%89%e8%a9%b2%e9%81%b5%e5%be%9e%e7%9a%84%e8%aa%bf%e5%84%aa%e6%b3%95%e5%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168287\/","title":{"rendered":"\u6bcf\u500bOracle DBA\u90fd\u61c9\u8a72\u9075\u5f9e\u7684\u8abf\u512a\u6cd5\u5247"},"content":{"rendered":"<h1 id=\"%e6%af%8f%e5%80%8boracle-dba%e9%83%bd%e6%87%89%e8%a9%b2%e9%81%b5%e5%be%9e%e7%9a%84%e8%aa%bf%e5%84%aa%e6%b3%95%e5%89%87-KbWEVuzjkb\">\u6bcf\u500bOracle DBA\u90fd\u61c9\u8a72\u9075\u5f9e\u7684\u8abf\u512a\u6cd5\u5247<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cOracle\u6578\u64da\u5eab\u7ba1\u7406\u54e1\uff08DBA\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u8abf\u512a\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6bcf\u500bOracle DBA\u90fd\u61c9\u8a72\u9075\u5f9e\u7684\u8abf\u512a\u6cd5\u5247\uff0c\u5e6b\u52a9\u4ed6\u5011\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"1-%e7%9e%ad%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9e%b6%e6%a7%8b-KbWEVuzjkb\">1. \u77ad\u89e3\u6578\u64da\u5eab\u67b6\u69cb<\/h2>\n<p>\u5728\u9032\u884c\u4efb\u4f55\u8abf\u512a\u4e4b\u524d\uff0cDBA\u5fc5\u9808\u6df1\u5165\u4e86\u89e3Oracle\u6578\u64da\u5eab\u7684\u67b6\u69cb\u3002\u9019\u5305\u62ec\u4e86\u89e3\u6578\u64da\u5eab\u7684\u7269\u7406\u7d50\u69cb\u3001\u908f\u8f2f\u7d50\u69cb\u4ee5\u53ca\u5982\u4f55\u5b58\u5132\u548c\u6aa2\u7d22\u6578\u64da\u3002\u719f\u6089Oracle\u7684\u5167\u90e8\u904b\u4f5c\uff0c\u4f8b\u5982SGA\uff08System Global Area\uff09\u548cPGA\uff08Program Global Area\uff09\uff0c\u80fd\u5e6b\u52a9DBA\u66f4\u6709\u6548\u5730\u9032\u884c\u8abf\u512a\u3002<\/p>\n<h2 id=\"2-%e5%ae%9a%e6%9c%9f%e7%9b%a3%e6%8e%a7%e6%80%a7%e8%83%bd-KbWEVuzjkb\">2. \u5b9a\u671f\u76e3\u63a7\u6027\u80fd<\/h2>\n<p>\u6027\u80fd\u76e3\u63a7\u662f\u8abf\u512a\u904e\u7a0b\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002DBA\u61c9\u5b9a\u671f\u4f7f\u7528Oracle\u63d0\u4f9b\u7684\u5de5\u5177\uff0c\u5982AWR\uff08Automatic Workload Repository\uff09\u5831\u544a\u548cASH\uff08Active Session History\uff09\u5831\u544a\uff0c\u4f86\u5206\u6790\u6578\u64da\u5eab\u7684\u6027\u80fd\u74f6\u9838\u3002\u9019\u4e9b\u5831\u544a\u80fd\u63d0\u4f9b\u6709\u95dcSQL\u67e5\u8a62\u57f7\u884c\u6642\u9593\u3001\u7b49\u5f85\u4e8b\u4ef6\u548c\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\u7684\u8a73\u7d30\u4fe1\u606f\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8awr%e5%a0%b1%e5%91%8a-KbWEVuzjkb\">\u4f7f\u7528AWR\u5831\u544a<\/h3>\n<pre><code>SELECT * FROM DBA_HIST_SQLSTAT WHERE SQL_ID = 'your_sql_id';<\/code><\/pre>\n<p>\u901a\u904e\u5206\u6790AWR\u5831\u544a\uff0cDBA\u53ef\u4ee5\u8b58\u5225\u51fa\u6027\u80fd\u554f\u984c\u7684\u6839\u6e90\uff0c\u4e26\u91dd\u5c0d\u6027\u5730\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"3-%e5%84%aa%e5%8c%96sql%e6%9f%a5%e8%a9%a2-KbWEVuzjkb\">3. \u512a\u5316SQL\u67e5\u8a62<\/h2>\n<p>SQL\u67e5\u8a62\u7684\u6027\u80fd\u76f4\u63a5\u5f71\u97ff\u6574\u500b\u6578\u64da\u5eab\u7684\u6548\u7387\u3002DBA\u61c9\u8a72\u5b9a\u671f\u5be9\u67e5\u548c\u512a\u5316SQL\u67e5\u8a62\uff0c\u78ba\u4fdd\u5b83\u5011\u80fd\u4ee5\u6700\u4f73\u65b9\u5f0f\u57f7\u884c\u3002\u9019\u5305\u62ec\u4f7f\u7528\u9069\u7576\u7684\u7d22\u5f15\u3001\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5168\u8868\u6383\u63cf\u4ee5\u53ca\u4f7f\u7528\u6709\u6548\u7684JOIN\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e4%bd%bf%e7%94%a8-KbWEVuzjkb\">\u7d22\u5f15\u7684\u4f7f\u7528<\/h3>\n<p>\u7d22\u5f15\u80fd\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\u3002\u56e0\u6b64\uff0cDBA\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7d93\u5e38\u67e5\u8a62\u7684\u5217\uff0c\u53ef\u4ee5\u8003\u616e\u5275\u5efaB-tree\u7d22\u5f15\uff0c\u800c\u5c0d\u65bc\u7bc4\u570d\u67e5\u8a62\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528\u4f4d\u5716\u7d22\u5f15\u3002<\/p>\n<h2 id=\"4-%e8%aa%bf%e6%95%b4%e5%85%a7%e5%ad%98%e9%85%8d%e7%bd%ae-KbWEVuzjkb\">4. \u8abf\u6574\u5167\u5b58\u914d\u7f6e<\/h2>\n<p>\u5167\u5b58\u914d\u7f6e\u5c0d\u6578\u64da\u5eab\u6027\u80fd\u6709\u8457\u76f4\u63a5\u5f71\u97ff\u3002DBA\u61c9\u6839\u64da\u6578\u64da\u5eab\u7684\u5de5\u4f5c\u8ca0\u8f09\u8abf\u6574SGA\u548cPGA\u7684\u5927\u5c0f\u3002\u9069\u7576\u7684\u5167\u5b58\u914d\u7f6e\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u8655\u7406\u80fd\u529b\u3002<\/p>\n<h3 id=\"%e8%aa%bf%e6%95%b4sga%e5%92%8cpga-KbWEVuzjkb\">\u8abf\u6574SGA\u548cPGA<\/h3>\n<pre><code>ALTER SYSTEM SET SGA_TARGET = 2G SCOPE = BOTH;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u8abf\u6574SGA\u7684\u5927\u5c0f\uff0cDBA\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"5-%e5%ae%9a%e6%9c%9f%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b6%ad%e8%ad%b7-KbWEVuzjkb\">5. \u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7dad\u8b77<\/h2>\n<p>\u5b9a\u671f\u7684\u6578\u64da\u5eab\u7dad\u8b77\u662f\u78ba\u4fdd\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u3002\u9019\u5305\u62ec\u91cd\u5efa\u7d22\u5f15\u3001\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u548c\u6e05\u7406\u7121\u7528\u6578\u64da\u3002DBA\u61c9\u5236\u5b9a\u7dad\u8b77\u8a08\u5283\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u59cb\u7d42\u8655\u65bc\u6700\u4f73\u72c0\u614b\u3002<\/p>\n<h3 id=\"%e6%9b%b4%e6%96%b0%e7%b5%b1%e8%a8%88%e4%bf%a1%e6%81%af-KbWEVuzjkb\">\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f<\/h3>\n<pre><code>EXEC DBMS_STATS.GATHER_SCHEMA_STATS('your_schema');<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u66f4\u65b0\u6307\u5b9a\u6a21\u5f0f\u7684\u7d71\u8a08\u4fe1\u606f\uff0c\u5e6b\u52a9\u512a\u5316\u67e5\u8a62\u8a08\u5283\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KbWEVuzjkb\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u4e4b\uff0cOracle DBA\u5728\u9032\u884c\u6578\u64da\u5eab\u8abf\u512a\u6642\uff0c\u61c9\u9075\u5faa\u4e0a\u8ff0\u6cd5\u5247\uff0c\u5f9e\u4e86\u89e3\u6578\u64da\u5eab\u67b6\u69cb\u5230\u5b9a\u671f\u76e3\u63a7\u6027\u80fd\uff0c\u518d\u5230\u512a\u5316SQL\u67e5\u8a62\u548c\u5167\u5b58\u914d\u7f6e\uff0c\u9019\u4e9b\u90fd\u662f\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u6b65\u9a5f\u3002\u900f\u904e\u9019\u4e9b\u65b9\u6cd5\uff0cDBA\u80fd\u5920\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\uff0c\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u696d\u52d9\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6bcf\u500bOracle DBA\u5fc5\u9075\u5faa\u7684\u8abf\u512a\u6cd5\u5247\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u8207\u9ad8\u6548\u904b\u884c\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-168287","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168287","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=168287"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168287\/revisions"}],"predecessor-version":[{"id":168288,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168287\/revisions\/168288"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}