{"id":199814,"date":"2025-05-06T09:44:32","date_gmt":"2025-05-06T01:44:32","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199814\/"},"modified":"2025-05-06T09:44:32","modified_gmt":"2025-05-06T01:44:32","slug":"%e5%88%86%e4%ba%aboracle%e6%95%b0%e6%8d%ae%e5%ba%93%e7%ae%a1%e7%90%86%e7%9a%84%e5%ae%9e%e7%94%a8%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199814\/","title":{"rendered":"\u5206\u4eabOracle\u6570\u636e\u5e93\u7ba1\u7406\u7684\u5b9e\u7528\u6280\u5de7"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5206\u4eabOracle\u6570\u636e\u5e93\u7ba1\u7406\u7684\u5b9e\u7528\u6280\u5de7<\/h1>\n<p>\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300a\u5206\u4eabOracle\u6570\u636e\u5e93\u7ba1\u7406\u7684\u5b9e\u7528\u6280\u5de7\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n<p>Oracle\u6570\u636e\u5e93\u7ba1\u7406\u5b9e\u7528\u6280\u5de7\u5206\u4eab<\/p>\n<p>Oracle\u6570\u636e\u5e93\u4f5c\u4e3a\u4e1a\u754c\u9886\u5148\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5728\u4f01\u4e1a\u5e94\u7528\u4e2d\u88ab\u5e7f\u6cdb\u4f7f\u7528\u3002\u4e3a\u4e86\u66f4\u9ad8\u6548\u5730\u7ba1\u7406Oracle\u6570\u636e\u5e93\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u4e00\u4e9b\u5b9e\u7528\u7684\u6280\u5de7\u548c\u65b9\u6cd5\u3002\u672c\u6587\u5c06\u5206\u4eab\u4e00\u4e9bOracle\u6570\u636e\u5e93\u7ba1\u7406\u7684\u5b9e\u7528\u6280\u5de7\uff0c\u540c\u65f6\u9644\u4e0a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u6280\u672f\u3002<\/p>\n<p><strong>\u6280\u5de7\u4e00\uff1a\u76d1\u63a7\u6570\u636e\u5e93\u6027\u80fd<\/strong><\/p>\n<p>\u5728\u65e5\u5e38\u8fd0\u7ef4\u4e2d\uff0c\u76d1\u63a7\u6570\u636e\u5e93\u7684\u6027\u80fd\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002Oracle\u6570\u636e\u5e93\u81ea\u5e26\u4e86\u8bb8\u591a\u6027\u80fd\u76d1\u63a7\u5de5\u5177\uff0c\u6bd4\u5982Enterprise Manager\u548cSQL Tuning Advisor\u7b49\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9bSQL\u8bed\u53e5\u6765\u76d1\u63a7\u6570\u636e\u5e93\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u76d1\u63a7\u6570\u636e\u5e93\u7a7a\u95f4\u5229\u7528\u7387\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>SELECT tablespace_name, round(SUM(bytes) \/ (1024 * 1024), 2) AS total_space_mb,\nround(SUM(bytes - NVL(used_space, 0)) \/ (1024 * 1024), 2) AS free_space_mb,\nround(NVL(used_space, 0) \/ (SUM(bytes) \/ 100), 2) AS used_percent\nFROM (SELECT tablespace_name, bytes, SUM(bytes) OVER (PARTITION BY tablespace_name) AS total_bytes,\n       CASE WHEN maxbytes = 0 THEN bytes ELSE maxbytes END AS max_bytes,\n       used_bytes, maxbytes,\n       (SELECT SUM(bytes) FROM dba_data_files WHERE tablespace_name = df.tablespace_name) AS used_space\nFROM dba_free_space fs, dba_data_files df WHERE fs.tablespace_name(+) = df.tablespace_name) \nGROUP BY tablespace_name;<\/pre>\n<p>\u8fd9\u6bb5SQL\u8bed\u53e5\u53ef\u4ee5\u67e5\u8be2\u51fa\u5404\u8868\u7a7a\u95f4\u7684\u603b\u7a7a\u95f4\u3001\u5269\u4f59\u7a7a\u95f4\u3001\u4ee5\u53ca\u4f7f\u7528\u767e\u5206\u6bd4\u7b49\u4fe1\u606f\uff0c\u5e2e\u52a9\u7ba1\u7406\u5458\u53ca\u65f6\u4e86\u89e3\u6570\u636e\u5e93\u7a7a\u95f4\u60c5\u51b5\uff0c\u505a\u51fa\u76f8\u5e94\u7684\u8c03\u6574\u3002<\/p>\n<p><strong>\u6280\u5de7\u4e8c\uff1a\u5907\u4efd\u4e0e\u6062\u590d\u6570\u636e\u5e93<\/strong><\/p>\n<p>\u6570\u636e\u5e93\u5907\u4efd\u662f\u4fdd\u969c\u6570\u636e\u5b89\u5168\u7684\u91cd\u8981\u624b\u6bb5\uff0c\u800c\u6570\u636e\u5e93\u6062\u590d\u5219\u662f\u5728\u610f\u5916\u60c5\u51b5\u4e0b\u7684\u6700\u540e\u4fdd\u969c\u3002Oracle\u6570\u636e\u5e93\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5907\u4efd\u548c\u6062\u590d\u529f\u80fd\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fdb\u884c\u6570\u636e\u5907\u4efd\u548c\u6062\u590d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5907\u4efd\u6570\u636e\u5e93\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>RMAN&gt; BACKUP DATABASE PLUS ARCHIVELOG;<\/pre>\n<p>\u8fd9\u6761RMAN\u547d\u4ee4\u5c06\u5907\u4efd\u6570\u636e\u5e93\u6587\u4ef6\u548c\u5f52\u6863\u65e5\u5fd7\u6587\u4ef6\uff0c\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u53ef\u6062\u590d\u6027\u3002\u5728\u9700\u8981\u6062\u590d\u6570\u636e\u5e93\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u6570\u636e\u5e93\u6062\u590d\uff1a<\/p>\n<pre>RMAN&gt; RESTORE DATABASE;\nRMAN&gt; RECOVER DATABASE;<\/pre>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u547d\u4ee4\uff0c\u53ef\u4ee5\u5c06\u6570\u636e\u5e93\u6062\u590d\u81f3\u6700\u8fd1\u7684\u5907\u4efd\u70b9\uff0c\u4fdd\u8bc1\u6570\u636e\u7684\u53ef\u9760\u6027\u3002<\/p>\n<p><strong>\u6280\u5de7\u4e09\uff1a\u4f18\u5316SQL\u67e5\u8be2<\/strong><\/p>\n<p>\u5728\u6570\u636e\u5e93\u5e94\u7528\u4e2d\uff0cSQL\u67e5\u8be2\u7684\u6027\u80fd\u5f80\u5f80\u51b3\u5b9a\u4e86\u7cfb\u7edf\u7684\u54cd\u5e94\u901f\u5ea6\u3002\u4e3a\u4e86\u63d0\u5347SQL\u67e5\u8be2\u7684\u6027\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u8fdb\u884c\u4e00\u4e9bSQL\u4f18\u5316\u5de5\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684SQL\u67e5\u8be2\u4f18\u5316\u793a\u4f8b\uff1a<\/p>\n<pre>SELECT \/*+ INDEX(employee emp_idx) *\/ employee_name, salary\nFROM employee\nWHERE department_id = 10;<\/pre>\n<p>\u8fd9\u6bb5SQL\u8bed\u53e5\u4e2d\uff0c\u901a\u8fc7\u63d0\u793aOracle\u4f7f\u7528\u7d22\u5f15<code>emp_idx<\/code>\u6765\u52a0\u901f\u67e5\u8be2\uff0c\u4ece\u800c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u3001\u91cd\u65b0\u8bbe\u8ba1SQL\u8bed\u53e5\u7b49\u65b9\u5f0f\u6765\u4f18\u5316\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n<p>\u603b\u7ed3\uff1a<\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u7684Oracle\u6570\u636e\u5e93\u7ba1\u7406\u5b9e\u7528\u6280\u5de7\u5206\u4eab\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u7ba1\u7406\u548c\u4f18\u5316Oracle\u6570\u636e\u5e93\uff0c\u786e\u4fdd\u7cfb\u7edf\u8fd0\u884c\u7a33\u5b9a\u548c\u6027\u80fd\u9ad8\u6548\u3002\u5f53\u7136\uff0c\u9664\u4e86\u4ee5\u4e0a\u6280\u5de7\u5916\uff0c\u8fd8\u6709\u5f88\u591a\u5176\u4ed6\u7684\u6570\u636e\u5e93\u7ba1\u7406\u6280\u5de7\u548c\u65b9\u6cd5\uff0c\u8bfb\u8005\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5b66\u4e60\u548c\u5c1d\u8bd5\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5bf9\u5927\u5bb6\u5728Oracle\u6570\u636e\u5e93\u7ba1\u7406\u65b9\u9762\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6570\u636e\u5e93\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5206\u4eabOracle\u6570\u636e\u5e93\u7ba1\u7406\u7684\u5b9e\u7528&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199814","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199814","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199814"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199814\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}