{"id":2162,"date":"2018-05-03T17:06:49","date_gmt":"2018-05-03T08:06:49","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=2162"},"modified":"2023-05-27T21:46:35","modified_gmt":"2023-05-27T12:46:35","slug":"%e3%80%90oracle%e3%80%91%e3%82%aa%e3%83%97%e3%83%86%e3%82%a3%e3%83%9e%e3%82%a4%e3%82%b6%e3%81%a8%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=2162","title":{"rendered":"\u3010Oracle\u3011\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u3068\u306f\uff1f"},"content":{"rendered":"<p>Oracle\u306b\u306f\u3001SQL\u306e\u5b9f\u884c\u51e6\u7406\u6642\u306b\u3001\u5b9f\u884c\u8a08\u753b\u3092\u4f5c\u6210\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306b\u3082\u4e0b\u8a18\u306e2\u7a2e\u985e\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>CBO<\/li>\n<li>RBO<\/li>\n<\/ul>\n<h2>CBO(\u30b3\u30b9\u30c8\u30d9\u30fc\u30b9\u30fb\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6)<\/h2>\n<p><span style=\"color: #ff0000;\"><strong>\u30c6\u30fc\u30d6\u30eb\u3001\u5217\u3001\u7d22\u5f15\u7b49\u306e\u7d71\u8a08\u60c5\u5831\u3092\u4f7f\u7528\u3057\u3066\u3001\u6700\u9069\u306a\u5b9f\u884c\u8a08\u753b\u3092\u7acb\u3066\u3066\u3044\u304f\u65b9\u5f0f<\/strong><\/span>\u3067\u3059\u3002<\/p>\n<h3>\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>\u30c7\u30fc\u30bf\u306e\u4ef6\u6570\u306e\u504f\u308a\u306b\u5de6\u53f3\u3055\u308c\u305a\u3001\u6700\u9069\u306a\u5b9f\u884c\u8a08\u753b\u3092\u7acb\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n<h3>\u30c7\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>\u30c7\u30fc\u30bf\u4ef6\u6570\u304c\u4e00\u6c17\u306b\u5897\u6e1b\u3057\u305f\u5834\u5408\u306b\u3001\u6700\u9069\u306a\u5b9f\u884c\u8a08\u753b\u3092\u7acb\u3066\u305a\u306b<span style=\"color: #ff0000;\"><strong>\u53e4\u3044\u5b9f\u884c\u8a08\u753b\u306e\u307e\u307e\u5b9f\u884c\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u7a81\u7136\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u70b9<\/strong><\/span>\u3002<\/p>\n<h2>RBO(\u30eb\u30fc\u30eb\u30d9\u30fc\u30b9\u30fb\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\uff09<\/h2>\n<p><span style=\"color: #ff0000;\"><strong>\u203bOracle10g\u4ee5\u964d\u306f\u30b5\u30dd\u30fc\u30c8\u5bfe\u8c61\u5916\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u57fa\u672c\u306f\u3001CBO\u3092\u4f7f\u3044\u307e\u3059\u3002<\/strong><\/span><\/p>\n<p>\u3042\u3089\u304b\u3058\u3081\u6c7a\u3081\u3089\u308c\u305f\u30eb\u30fc\u30eb\u3092\u5143\u306b\u5b9f\u884c\u8a08\u753b\u3092\u4f5c\u6210\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002\uff08\u4f8b\u3048\u3070\u3001\u691c\u7d22\u6761\u4ef6\u3068\u3057\u3066\u6307\u5b9a\u3055\u308c\u305f\u5217\u306b\u3001\u7d22\u5f15\u304c\u4f5c\u6210\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u3001\u305d\u306e\u7d22\u5f15\u3092\u5229\u7528\u3059\u308b\u7b49\uff09<\/p>\n<h3>\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>\u30c7\u30fc\u30bf\u306e\u5897\u6e1b\u306b\u5de6\u53f3\u3055\u308c\u305a\u3001\u5b89\u5b9a\u3057\u305f\u5b9f\u884c\u8a08\u753b\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u70b9\u3002<\/p>\n<h3>\u30c7\u30e1\u30ea\u30c3\u30c8<\/h3>\n<p>\u30c7\u30fc\u30bf\u306e\u504f\u308a\uff08\u4ef6\u6570\u7b49\uff09\u306b\u3088\u3063\u3066\u3001\u3082\u3063\u3068\u6700\u9069\u306a\uff33\uff31\uff2c\u3092\u4f5c\u6210\u3067\u304d\u308b\u306e\u306b\u3082\u95a2\u308f\u3089\u305a\u3067\u304d\u306a\u3044\u70b9\u3002<\/p>\n<p>Oracle\u306e\u65b0\u6a5f\u80fd\u306b\u5bfe\u5fdc\u3067\u304d\u3066\u3044\u306a\u3044\u70b9\uff08<span style=\"color: #ff0000;\"><strong>\uff32\uff22\uff2f\u304c10g\u4ee5\u964d\u30b5\u30dd\u30fc\u30c8\u5bfe\u8c61\u5916\u306b\u306a\u3063\u305f\u306e\u306f\u3001\u3053\u306e\u7406\u7531\u3082\u5927\u304d\u3044<\/strong><\/span>\u307f\u305f\u3044\u3067\u3059\u3002\uff09<\/p>\n<h2>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n<p>\u8a72\u5f53\u306eOracleDB\u304c\u3001\u3069\u306e\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u3092\u4f7f\u7528\u3059\u308b\u304b\u306f\u4e0b\u8a18\u306e<span style=\"color: #ff0000;\"><strong>\u300c\u521d\u671f\u5316\u30d1\u30e9\u30e1\u30fc\u30bf\u300d<\/strong><\/span>\u3067\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">ALTER SESSION SET OPTIMIZER_MODE = \"\u8a2d\u5b9a\u5024\"<\/pre>\n<h3>\u8a2d\u5b9a\u5024\u306e\u7a2e\u985e<\/h3>\n<table>\n<tbody>\n<tr>\n<th>\u8a2d\u5b9a\u5024<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<tr>\n<td>CHOOSE<\/td>\n<td>\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3001SQL\u306e\u8a72\u5f53\u30c6\u30fc\u30d6\u30eb\u306b\u3001\u4e00\u3064\u3067\u3082\u7d71\u8a08\u60c5\u5831\u304c\u3042\u308c\u3070CBO\u3001\u306a\u3051\u308c\u3070RBO\u3092\u4f7f\u3046\u3002<\/td>\n<\/tr>\n<tr>\n<td>RULE<\/td>\n<td>RBO\u56fa\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>FIRST_ROWS<\/td>\n<td>CBO\u56fa\u5b9a\u3001\u6700\u521d\u306e1\u884c\u306e\u5fdc\u7b54\u6642\u9593\u3092\u6700\u5c0f\u306b\u6291\u3048\u308b\u5b9f\u884c\u8a08\u753b\u3068\u3059\u308b\u3002<\/td>\n<\/tr>\n<tr>\n<td>FIRST_ROWS_n<\/td>\n<td>CBO\u56fa\u5b9a\u3001\u6700\u521d\u306eN\u884c\u306e\u5fdc\u7b54\u6642\u9593\u3092\u6700\u5c0f\u306b\u6291\u3048\u308b\u5b9f\u884c\u8a08\u753b\u3068\u3059\u308b\u3002<\/td>\n<\/tr>\n<tr>\n<td>ALL_ROWS<\/td>\n<td>CBO\u56fa\u5b9a\u3001\u5168\u4f53\u306e\u51e6\u7406\u6642\u9593\u3092\u6700\u5c0f\u306b\u6291\u3048\u308b\u5b9f\u884c\u8a08\u753b\u3068\u3059\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30ab\u30bf\u30ed\u30b0\u30de\u30cd\u30fc\u30b8\u30e3\u3068\u306f\uff1f<\/h2>\n<p>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u5b9f\u884c\u8a08\u753b\u3092\u7acb\u3066\u308b\u969b\u306b\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306b\u91cd\u8981\u306a\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30ab\u30bf\u30ed\u30b0\u3068\u306f\uff1f<\/h3>\n<p>DBMS\u306e\u5185\u90e8\u60c5\u5831\u3092\u96c6\u3081\u305f\u30c6\u30fc\u30d6\u30eb\u7fa4\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30ab\u30bf\u30ed\u30b0\u306e\u60c5\u5831\u3092\u300c\u7d71\u8a08\u60c5\u5831\u300d\u3068\u547c\u3093\u3060\u308a\u3082\u3057\u307e\u3059\u3002<\/p>\n<h2>\u7d71\u8a08\u60c5\u5831\u3068\u306f\uff1f<\/h2>\n<p>\u30ab\u30bf\u30ed\u30b0\u30de\u30cd\u30fc\u30b8\u30e3\u304c\u7ba1\u7406\u3057\u3066\u3044\u308b\u60c5\u5831\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u60c5\u5831\u3092\u5229\u7528\u3057\u3066\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306f\u5b9f\u884c\u8a08\u753b\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u5404\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u6570<\/li>\n<li>\u5404\u30c6\u30fc\u30d6\u30eb\u306e\u5217\u6570\u3068\u5217\u306e\u30b5\u30a4\u30ba<\/li>\n<li>\u5217\u5024\u306e\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\uff08\u5024\u306e\u500b\u6570\uff09<\/li>\n<li>\u5217\u5024\u306e\u30d2\u30b9\u30c8\u30b0\u30e9\u30e0\uff08\u3069\u306e\u5024\u304c\u3044\u304f\u3064\u3042\u308b\u304b\u306e\u5206\u5e03\uff09<\/li>\n<li>\u5217\u5185\u306b\u3042\u308bNULL\u306e\u6570<\/li>\n<li>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u60c5\u5831<\/li>\n<\/ul>\n<h2>\u7d71\u8a08\u60c5\u5831\u306e\u66f4\u65b0\u306b\u3064\u3044\u3066<\/h2>\n<p>\u9069\u5207\u306a\u5b9f\u884c\u8a08\u753b\u3092\u4f5c\u6210\u3059\u308b\u306b\u306f\u7d71\u8a08\u60c5\u5831\u3092\u66f4\u65b0\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u5bfe\u8c61\u306e\u30c6\u30fc\u30d6\u30eb\u3084\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u30b5\u30a4\u30ba\u3068\u6570\u306b\u3088\u3063\u3066\u306f\u6570\u5341\u5206\u301c\u6570\u6642\u9593\u8981\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5404DBMS\u3054\u3068\u306b\u7d71\u8a08\u60c5\u5831\u66f4\u65b0\u7528\u306e\u30b3\u30de\u30f3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>JIT(Just In Time)\u306b\u3064\u3044\u3066<\/h3>\n<p>\u30af\u30a8\u30ea\u5b9f\u884c\u6642\u306b\u7d71\u8a08\u60c5\u5831\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306b\u53ce\u96c6\u3059\u308bDBMS\u306e\u3053\u3068\u3067\u3059\u3002\u30e1\u30ea\u30c3\u30c8\u3070\u304b\u308a\u306e\u3088\u3046\u3067\u3059\u304c\u3001\u7d71\u8a08\u60c5\u5831\u306e\u53d6\u5f97\u81ea\u4f53\u306b\u6570\u5341\u5206\u3068\u304b\u304b\u308b\u5834\u5408\u304c\u3042\u308b\u306e\u3067\u30e1\u30ea\u30c3\u30c8\u3070\u304b\u308a\u3067\u306f\u306a\u3044\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Oracle\u306b\u306f\u3001SQL\u306e\u5b9f\u884c\u51e6\u7406\u6642\u306b\u3001\u5b9f\u884c\u8a08\u753b\u3092\u4f5c\u6210\u3057\u3066\u304f\u308c\u307e\u3059\u3002 \u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306b\u3082\u4e0b\u8a18\u306e2\u7a2e\u985e\u304c\u5b58\u5728\u3057\u307e\u3059\u3002 CBO RBO CBO(\u30b3\u30b9\u30c8\u30d9\u30fc\u30b9\u30fb\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6) \u30c6\u30fc\u30d6\u30eb\u3001\u5217\u3001\u7d22\u5f15\u7b49\u306e\u7d71\u8a08\u60c5\u5831\u3092\u4f7f\u7528\u3057\u3066\u3001\u6700\u9069\u306a [&hellip;]","protected":false},"author":1,"featured_media":2209,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/2162"}],"collection":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2162"}],"version-history":[{"count":8,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/2162\/revisions"}],"predecessor-version":[{"id":20402,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/2162\/revisions\/20402"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/media\/2209"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2162"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}