{"id":94578,"date":"2024-10-19T19:25:16","date_gmt":"2024-10-19T11:25:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94578\/"},"modified":"2024-10-19T19:25:17","modified_gmt":"2024-10-19T11:25:17","slug":"oracle-%e8%a1%a8%e7%a7%bb%e5%8b%95%e5%be%8c%e5%bf%85%e9%a0%88%e5%81%9a%e7%9a%84%e4%ba%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94578\/","title":{"rendered":"Oracle \u8868\u79fb\u52d5\u5f8c\u5fc5\u9808\u505a\u7684\u4e8b"},"content":{"rendered":"

Oracle \u8868\u79fb\u52d5\u5f8c\u5fc5\u9808\u505a\u7684\u4e8b<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u8868\u7684\u79fb\u52d5\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u9032\u884c\u6027\u80fd\u512a\u5316\u6216\u6578\u64da\u5eab\u91cd\u7d44\u6642\u3002\u5c0d\u65bc\u4f7f\u7528 Oracle \u6578\u64da\u5eab\u7684\u7ba1\u7406\u54e1\u4f86\u8aaa\uff0c\u8868\u79fb\u52d5\u5f8c\u7684\u5f8c\u7e8c\u8655\u7406\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728 Oracle \u8868\u79fb\u52d5\u5f8c\u5fc5\u9808\u57f7\u884c\u7684\u5e7e\u500b\u95dc\u9375\u6b65\u9a5f\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n

1. \u6aa2\u67e5\u6578\u64da\u5b8c\u6574\u6027<\/h2>\n

\u5728\u8868\u79fb\u52d5\u5f8c\uff0c\u9996\u5148\u9700\u8981\u6aa2\u67e5\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u9019\u53ef\u4ee5\u901a\u904e\u57f7\u884c\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u5b8c\u6210\uff1a<\/p>\n

SELECT COUNT(*) FROM your_table;<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u79fb\u52d5\u5f8c\u7684\u6578\u64da\u884c\u6578\u8207\u79fb\u52d5\u524d\u4e00\u81f4\u3002\u6b64\u5916\uff0c\u9084\u61c9\u6aa2\u67e5\u662f\u5426\u6709\u4efb\u4f55\u7d04\u675f\u689d\u4ef6\uff08\u5982\u4e3b\u9375\u3001\u5916\u9375\uff09\u88ab\u7834\u58de\u3002<\/p>\n
2. \u66f4\u65b0\u7d71\u8a08\u4fe1\u606f<\/h2>\n
Oracle \u6578\u64da\u5eab\u4f7f\u7528\u7d71\u8a08\u4fe1\u606f\u4f86\u512a\u5316\u67e5\u8a62\u8a08\u5283\u3002\u8868\u79fb\u52d5\u5f8c\uff0c\u9019\u4e9b\u7d71\u8a08\u4fe1\u606f\u53ef\u80fd\u4e0d\u518d\u6e96\u78ba\uff0c\u56e0\u6b64\u9700\u8981\u66f4\u65b0\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff1a<\/p>\n
EXEC DBMS_STATS.GATHER_TABLE_STATS('your_schema', 'your_table');<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u67e5\u8a62\u512a\u5316\u5668\u80fd\u5920\u6839\u64da\u6700\u65b0\u7684\u6578\u64da\u5206\u4f48\u4f86\u751f\u6210\u6700\u4f73\u7684\u57f7\u884c\u8a08\u5283\u3002<\/p>\n
3. \u6aa2\u67e5\u7d22\u5f15<\/h2>\n
\u5728\u8868\u79fb\u52d5\u5f8c\uff0c\u7d22\u5f15\u7684\u72c0\u614b\u4e5f\u9700\u8981\u6aa2\u67e5\u3002\u78ba\u4fdd\u6240\u6709\u76f8\u95dc\u7684\u7d22\u5f15\u90fd\u4ecd\u7136\u6709\u6548\uff0c\u4e26\u4e14\u6c92\u6709\u88ab\u640d\u58de\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u7d22\u5f15\u7684\u72c0\u614b\uff1a<\/p>\n
SELECT INDEX_NAME, STATUS FROM USER_INDEXES WHERE TABLE_NAME = 'your_table';<\/code><\/pre>\n
\u5982\u679c\u767c\u73fe\u4efb\u4f55\u7d22\u5f15\u7684\u72c0\u614b\u70ba ‘UNUSABLE’\uff0c\u5247\u9700\u8981\u91cd\u5efa\u9019\u4e9b\u7d22\u5f15\uff1a<\/p>\n
ALTER INDEX your_index REBUILD;<\/code><\/pre>\n
4. \u6e2c\u8a66\u61c9\u7528\u7a0b\u5e8f<\/h2>\n
\u5728\u8868\u79fb\u52d5\u5f8c\uff0c\u61c9\u8a72\u5c0d\u4f9d\u8cf4\u65bc\u8a72\u8868\u7684\u61c9\u7528\u7a0b\u5e8f\u9032\u884c\u5168\u9762\u6e2c\u8a66\u3002\u9019\u5305\u62ec\u6aa2\u67e5\u6240\u6709 CRUD\uff08\u5275\u5efa\u3001\u8b80\u53d6\u3001\u66f4\u65b0\u3001\u522a\u9664\uff09\u64cd\u4f5c\u662f\u5426\u6b63\u5e38\u904b\u884c\u3002\u7279\u5225\u662f\u8981\u6ce8\u610f\u4efb\u4f55\u53ef\u80fd\u7684\u6027\u80fd\u554f\u984c\uff0c\u56e0\u70ba\u8868\u7684\u7269\u7406\u4f4d\u7f6e\u8b8a\u5316\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n
5. \u76e3\u63a7\u6027\u80fd<\/h2>\n
\u5728\u8868\u79fb\u52d5\u5f8c\u7684\u5e7e\u5929\u5167\uff0c\u61c9\u8a72\u5bc6\u5207\u76e3\u63a7\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u4f7f\u7528 Oracle \u7684\u6027\u80fd\u76e3\u63a7\u5de5\u5177\uff0c\u5982 AWR\uff08Automatic Workload Repository\uff09\u5831\u544a\uff0c\u4f86\u5206\u6790\u67e5\u8a62\u6027\u80fd\u548c\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\u3002\u9019\u6a23\u53ef\u4ee5\u53ca\u6642\u767c\u73fe\u4e26\u89e3\u6c7a\u6f5b\u5728\u7684\u6027\u80fd\u74f6\u9838\u3002<\/p>\n
6. \u66f4\u65b0\u6587\u6a94<\/h2>\n
\u6700\u5f8c\uff0c\u8a18\u5f97\u66f4\u65b0\u6240\u6709\u76f8\u95dc\u7684\u6587\u6a94\uff0c\u5305\u62ec\u6578\u64da\u5b57\u5178\u3001\u67b6\u69cb\u5716\u548c\u64cd\u4f5c\u624b\u518a\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u672a\u4f86\u7684\u7dad\u8b77\uff0c\u9084\u80fd\u78ba\u4fdd\u5718\u968a\u6210\u54e1\u4e4b\u9593\u7684\u4fe1\u606f\u5171\u4eab\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728 Oracle \u8868\u79fb\u52d5\u5f8c\uff0c\u57f7\u884c\u4e0a\u8ff0\u6b65\u9a5f\u662f\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u548c\u7cfb\u7d71\u7a69\u5b9a\u6027\u7684\u95dc\u9375\u3002\u5f9e\u6aa2\u67e5\u6578\u64da\u5b8c\u6574\u6027\u5230\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff0c\u518d\u5230\u6e2c\u8a66\u61c9\u7528\u7a0b\u5e8f\u548c\u76e3\u63a7\u6027\u80fd\uff0c\u6bcf\u4e00\u6b65\u90fd\u4e0d\u5bb9\u5ffd\u8996\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3Oracle\u8868\u79fb\u52d5\u5f8c\u5fc5\u9808\u57f7\u884c\u7684\u6b65\u9a5f\uff0c\u5305\u62ec\u66f4\u65b0\u4f9d\u8cf4\u3001\u6aa2\u67e5\u6b0a\u9650\u53ca\u57f7\u884c\u7d71\u8a08\u8cc7\u8a0a\u6536\u96c6\uff0c\u78ba\u4fdd\u7cfb\u7d71\u6b63\u5e38\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-94578","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94578","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=94578"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94578\/revisions"}],"predecessor-version":[{"id":94579,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94578\/revisions\/94579"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94578"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}