{"id":96220,"date":"2024-10-20T07:36:18","date_gmt":"2024-10-19T23:36:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96220\/"},"modified":"2024-10-20T07:36:19","modified_gmt":"2024-10-19T23:36:19","slug":"oracle%e5%84%aa%e5%8c%96%e7%b7%a9%e8%a1%9d%e5%8d%80%e4%b9%8b%e9%ab%98%e8%ab%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96220\/","title":{"rendered":"Oracle\u512a\u5316\u7de9\u885d\u5340\u4e4b\u9ad8\u8ad6"},"content":{"rendered":"<h1 id=\"oracle%e5%84%aa%e5%8c%96%e7%b7%a9%e8%a1%9d%e5%8d%80%e4%b9%8b%e9%ab%98%e8%ab%96-WkLLgmlnNU\">Oracle\u512a\u5316\u7de9\u885d\u5340\u4e4b\u9ad8\u8ad6<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7de9\u885d\u5340\u7684\u512a\u5316\u5c0d\u65bc\u63d0\u5347\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u5546\u696d\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u5176\u7de9\u885d\u5340\u7ba1\u7406\u7b56\u7565\u5c0d\u65bc\u6578\u64da\u7684\u8b80\u53d6\u548c\u5beb\u5165\u901f\u5ea6\u6709\u8457\u76f4\u63a5\u7684\u5f71\u97ff\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u7684\u7de9\u885d\u5340\u512a\u5316\u6280\u8853\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u5efa\u8b70\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b7%a9%e8%a1%9d%e5%8d%80%ef%bc%9f-WkLLgmlnNU\">\u4ec0\u9ebc\u662f\u7de9\u885d\u5340\uff1f<\/h2>\n<p>\u7de9\u885d\u5340\u662f\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u7528\u4f86\u81e8\u6642\u5b58\u5132\u6578\u64da\u7684\u5167\u5b58\u5340\u57df\u3002\u7576\u7528\u6236\u8acb\u6c42\u6578\u64da\u6642\uff0cOracle\u6703\u9996\u5148\u6aa2\u67e5\u7de9\u885d\u5340\u4e2d\u662f\u5426\u5df2\u7d93\u5b58\u5728\u6240\u9700\u7684\u6578\u64da\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u5f9e\u7de9\u885d\u5340\u4e2d\u8b80\u53d6\uff0c\u9019\u6a23\u53ef\u4ee5\u5927\u5e45\u5ea6\u6e1b\u5c11\u78c1\u789fI\/O\u64cd\u4f5c\uff0c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h2 id=\"oracle%e7%9a%84%e7%b7%a9%e8%a1%9d%e5%8d%80%e7%ae%a1%e7%90%86-WkLLgmlnNU\">Oracle\u7684\u7de9\u885d\u5340\u7ba1\u7406<\/h2>\n<p>Oracle\u4f7f\u7528\u4e00\u7a2e\u7a31\u70ba\u300c\u7de9\u885d\u5340\u7de9\u5b58\u300d\u7684\u6a5f\u5236\u4f86\u7ba1\u7406\u7de9\u885d\u5340\u3002\u9019\u500b\u7de9\u5b58\u7531\u591a\u500b\u7de9\u885d\u5340\u7d44\u6210\uff0c\u6bcf\u500b\u7de9\u885d\u5340\u53ef\u4ee5\u5b58\u5132\u4e00\u500b\u6578\u64da\u584a\u3002Oracle\u6703\u6839\u64da\u4e00\u5b9a\u7684\u7b97\u6cd5\u4f86\u6c7a\u5b9a\u54ea\u4e9b\u6578\u64da\u584a\u61c9\u8a72\u88ab\u4fdd\u7559\u5728\u7de9\u885d\u5340\u4e2d\uff0c\u54ea\u4e9b\u61c9\u8a72\u88ab\u66ff\u63db\u3002<\/p>\n<h3 id=\"%e7%b7%a9%e8%a1%9d%e5%8d%80%e7%9a%84%e9%a1%9e%e5%9e%8b-WkLLgmlnNU\">\u7de9\u885d\u5340\u7684\u985e\u578b<\/h3>\n<ul>\n<li><strong>\u6578\u64da\u7de9\u885d\u5340\uff1a<\/strong>\u7528\u65bc\u5b58\u5132\u8868\u548c\u7d22\u5f15\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u91cd\u505a\u7de9\u885d\u5340\uff1a<\/strong>\u7528\u65bc\u5b58\u5132\u6578\u64da\u5eab\u7684\u8b8a\u66f4\u8a18\u9304\uff0c\u4ee5\u4fbf\u5728\u7cfb\u7d71\u5d29\u6f70\u6642\u9032\u884c\u6062\u5fa9\u3002<\/li>\n<li><strong>\u5171\u4eab\u7de9\u885d\u5340\uff1a<\/strong>\u7528\u65bc\u5b58\u5132\u5171\u4eab\u7684\u6578\u64da\u548c\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b7%a9%e8%a1%9d%e5%8d%80%e5%84%aa%e5%8c%96%e7%9a%84%e7%ad%96%e7%95%a5-WkLLgmlnNU\">\u7de9\u885d\u5340\u512a\u5316\u7684\u7b56\u7565<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8Oracle\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7de9\u885d\u5340\u512a\u5316\u7684\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e8%aa%bf%e6%95%b4%e7%b7%a9%e8%a1%9d%e5%8d%80%e5%a4%a7%e5%b0%8f-WkLLgmlnNU\">1. \u8abf\u6574\u7de9\u885d\u5340\u5927\u5c0f<\/h3>\n<p>\u6839\u64da\u61c9\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\uff0c\u9069\u7576\u8abf\u6574\u7de9\u885d\u5340\u7684\u5927\u5c0f\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u8a62\u7576\u524d\u7684\u7de9\u885d\u5340\u5927\u5c0f\uff1a<\/p>\n<pre><code>SELECT name, value FROM v$parameter WHERE name = 'db_block_size';<\/code><\/pre>\n<p>\u6839\u64da\u67e5\u8a62\u7d50\u679c\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u589e\u52a0\u6216\u6e1b\u5c11\u7de9\u885d\u5340\u7684\u5927\u5c0f\uff0c\u4ee5\u9069\u61c9\u4e0d\u540c\u7684\u5de5\u4f5c\u8ca0\u8f09\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e8%87%aa%e5%8b%95%e7%b7%a9%e8%a1%9d%e5%8d%80%e7%ae%a1%e7%90%86-WkLLgmlnNU\">2. \u4f7f\u7528\u81ea\u52d5\u7de9\u885d\u5340\u7ba1\u7406<\/h3>\n<p>Oracle\u63d0\u4f9b\u4e86\u81ea\u52d5\u7de9\u885d\u5340\u7ba1\u7406\u529f\u80fd\uff0c\u53ef\u4ee5\u6839\u64da\u5be6\u969b\u7684\u4f7f\u7528\u60c5\u6cc1\u81ea\u52d5\u8abf\u6574\u7de9\u885d\u5340\u7684\u5927\u5c0f\u548c\u6578\u91cf\u3002\u555f\u7528\u81ea\u52d5\u7de9\u885d\u5340\u7ba1\u7406\u53ef\u4ee5\u6e1b\u5c11\u624b\u52d5\u8abf\u6574\u7684\u5de5\u4f5c\u91cf\uff0c\u4e26\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<pre><code>ALTER SYSTEM SET memory_target = 2G;<\/code><\/pre>\n<h3 id=\"3-%e7%9b%a3%e6%8e%a7%e7%b7%a9%e8%a1%9d%e5%8d%80%e5%91%bd%e4%b8%ad%e7%8e%87-WkLLgmlnNU\">3. \u76e3\u63a7\u7de9\u885d\u5340\u547d\u4e2d\u7387<\/h3>\n<p>\u7de9\u885d\u5340\u547d\u4e2d\u7387\u662f\u8861\u91cf\u7de9\u885d\u5340\u6027\u80fd\u7684\u4e00\u500b\u91cd\u8981\u6307\u6a19\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u8a62\u7de9\u885d\u5340\u547d\u4e2d\u7387\uff1a<\/p>\n<pre><code>SELECT (1 - (phy.value \/ (phy.value + lob.value))) * 100 AS hit_ratio\nFROM v$buffer_pool_statistics phy, v$lob_statistics lob;<\/code><\/pre>\n<p>\u5982\u679c\u547d\u4e2d\u7387\u8f03\u4f4e\uff0c\u5247\u53ef\u80fd\u9700\u8981\u8003\u616e\u589e\u52a0\u7de9\u885d\u5340\u7684\u5927\u5c0f\u6216\u8abf\u6574\u6578\u64da\u7684\u5b58\u5132\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-WkLLgmlnNU\">\u7d50\u8ad6<\/h2>\n<p>\u512a\u5316Oracle\u7684\u7de9\u885d\u5340\u7ba1\u7406\u662f\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u8abf\u6574\u7de9\u885d\u5340\u5927\u5c0f\u3001\u4f7f\u7528\u81ea\u52d5\u7de9\u885d\u5340\u7ba1\u7406\u4ee5\u53ca\u76e3\u63a7\u7de9\u885d\u5340\u547d\u4e2d\u7387\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u7cfb\u7d71\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u8655\u7406\u80fd\u529b\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9019\u4e9b\u7b56\u7565\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u512a\u5316\u7de9\u885d\u5340\u7684\u9ad8\u6548\u7b56\u7565\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\uff0c\u78ba\u4fdd\u5feb\u901f\u5b58\u53d6\u8207\u7a69\u5b9a\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-96220","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96220","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=96220"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96220\/revisions"}],"predecessor-version":[{"id":96221,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96220\/revisions\/96221"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96220"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96220"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96220"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}