{"id":15495,"date":"2023-12-04T20:25:39","date_gmt":"2023-12-04T12:25:39","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15495"},"modified":"2023-12-04T20:26:28","modified_gmt":"2023-12-04T12:26:28","slug":"oracle-zhong-jian-dan-miao-shu-table-segment-ext","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-jian-dan-miao-shu-table-segment-ext\/","title":{"rendered":"Oracle \u4e2d\u7b80\u5355\u63cf\u8ff0 table \/ segment \/ extent \/ block \u4e4b\u95f4 \u7684\u5173\u7cfb\uff1f"},"content":{"rendered":"<p>\u5728 Oracle \u4e2d\uff0ctable\u3001segment\u3001extent \u548c block \u4e4b\u95f4\u5b58\u5728\u5982\u4e0b\u5173\u7cfb\uff1a<\/p>\n<ul>\n<li>\n<strong>Table\uff08\u8868\uff09<\/strong>\uff1a\u5728\u6570\u636e\u5e93\u4e2d\u5b58\u50a8\u6570\u636e\u7684\u903b\u8f91\u7ed3\u6784\uff0c\u7528\u6765\u7ec4\u7ec7\u548c\u5b58\u50a8\u76f8\u5173\u7684\u6570\u636e\u884c\u3002\u8868\u662f\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u5bf9\u8c61\uff0c\u5305\u542b\u5217\u548c\u884c\uff0c\u7528\u6765\u5b58\u50a8\u5b9e\u9645\u7684\u6570\u636e\u3002\n<\/li>\n<li>\n<strong>Segment\uff08\u6bb5\uff09<\/strong>\uff1a\u6bb5\u662f\u903b\u8f91\u4e0a\u7684\u5b58\u50a8\u5355\u4f4d\uff0c\u662f\u4e00\u79cd\u7528\u6765\u5b58\u50a8\u7279\u5b9a\u5bf9\u8c61\u6570\u636e\u7684\u903b\u8f91\u7ed3\u6784\uff0c\u53ef\u4ee5\u662f\u8868\u3001\u7d22\u5f15\u3001\u5206\u533a\u7b49\u5bf9\u8c61\u7684\u6570\u636e\u5b58\u50a8\u5355\u5143\u3002\u4e00\u4e2a\u8868\u6216\u7d22\u5f15\u90fd\u6709\u76f8\u5e94\u7684\u6bb5\u6765\u5b58\u50a8\u6570\u636e\u3002\n<\/li>\n<li>\n<strong>Extent\uff08\u533a\uff09<\/strong>\uff1aExtent \u662f\u7269\u7406\u4e0a\u7684\u5b58\u50a8\u5355\u4f4d\uff0c\u662f\u7531\u8fde\u7eed\u7684\u6570\u636e\u5757\uff08blocks\uff09\u7ec4\u6210\u7684\u7a7a\u95f4\u5206\u914d\u5355\u5143\u3002\u5f53\u6570\u636e\u5e93\u9700\u8981\u5206\u914d\u7a7a\u95f4\u7ed9\u6bb5\u65f6\uff0c\u4ee5 extent \u4e3a\u5355\u4f4d\u8fdb\u884c\u5206\u914d\uff0cextent \u7531\u8fde\u7eed\u7684\u7269\u7406\u5757\u7ec4\u6210\uff0c\u901a\u5e38\u5305\u542b\u591a\u4e2a\u6570\u636e\u5757\u3002\n<\/li>\n<li>\n<strong>Block\uff08\u5757\uff09<\/strong>\uff1aBlock \u662f\u5b58\u50a8\u6570\u636e\u7684\u6700\u5c0f\u5355\u4f4d\uff0c\u4e5f\u662f\u64cd\u4f5c\u7cfb\u7edf\u6587\u4ef6\u7cfb\u7edf\u7684\u6700\u5c0f\u5206\u914d\u5355\u4f4d\u3002\u4e00\u4e2a extent \u7531\u591a\u4e2a\u6570\u636e\u5757\u7ec4\u6210\uff0c\u5757\u7684\u5927\u5c0f\u53ef\u4ee5\u901a\u8fc7\u53c2\u6570\u8bbe\u7f6e\uff0c\u5728 Oracle \u4e2d\u901a\u5e38\u4e3a 8KB\u3002\n<\/li>\n<\/ul>\n<p>\u5173\u7cfb\uff1a<\/p>\n<ul>\n<li>\u8868\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u6bb5\u7ec4\u6210\uff0c\u6bcf\u4e2a\u6bb5\u5bf9\u5e94\u7740\u5b58\u50a8\u4e0d\u540c\u7c7b\u578b\u5bf9\u8c61\u7684\u6570\u636e\uff08\u4f8b\u5982\u8868\u3001\u7d22\u5f15\u7b49\uff09\u3002<\/li>\n<li>\u6bb5\u7531\u4e00\u4e2a\u6216\u591a\u4e2a extent \u7ec4\u6210\uff0cextent \u662f\u903b\u8f91\u4e0a\u7684\u5206\u914d\u5355\u4f4d\uff0c\u7528\u6765\u5b58\u50a8\u6bb5\u7684\u6570\u636e\u3002<\/li>\n<li>Extent \u7531\u591a\u4e2a\u6570\u636e\u5757\uff08block\uff09\u7ec4\u6210\uff0c\u5757\u662f\u6700\u5c0f\u7684\u7269\u7406\u5b58\u50a8\u5355\u4f4d\uff0c\u7528\u6765\u5b58\u50a8\u5b9e\u9645\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Oracle \u4e2d\uff0ctable\u3001segment\u3001extent \u548c block \u4e4b\u95f4\u5b58\u5728\u5982\u4e0b\u5173\u7cfb\uff1a Table [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-15495","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15495","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=15495"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15495\/revisions"}],"predecessor-version":[{"id":15496,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15495\/revisions\/15496"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15495"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15495"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}