{"id":96146,"date":"2024-10-20T06:59:17","date_gmt":"2024-10-19T22:59:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96146\/"},"modified":"2024-10-20T06:59:17","modified_gmt":"2024-10-19T22:59:17","slug":"oracle%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e4%b9%8brollback-segment%e5%84%aa%e5%8c%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96146\/","title":{"rendered":"Oracle\u6027\u80fd\u512a\u5316\u4e4bRollback Segment\u512a\u5316"},"content":{"rendered":"<h1 id=\"oracle%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e4%b9%8brollback-segment%e5%84%aa%e5%8c%96-ZIbUabOSPw\">Oracle\u6027\u80fd\u512a\u5316\u4e4bRollback Segment\u512a\u5316<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0cRollback Segment\uff08\u56de\u6efe\u6bb5\uff09\u662f\u7528\u4f86\u5b58\u5132\u4e8b\u52d9\u7684\u820a\u6578\u64da\uff0c\u4ee5\u4fbf\u5728\u4e8b\u52d9\u5931\u6557\u6216\u9700\u8981\u56de\u6efe\u6642\u80fd\u5920\u6062\u5fa9\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u96a8\u8457\u6578\u64da\u5eab\u7684\u4f7f\u7528\u91cf\u589e\u52a0\uff0cRollback Segment\u7684\u6027\u80fd\u512a\u5316\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0eRollback Segment\u7684\u512a\u5316\u65b9\u6cd5\uff0c\u5e6b\u52a9\u7528\u6236\u63d0\u5347Oracle\u6578\u64da\u5eab\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<h2 id=\"rollback-segment%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-ZIbUabOSPw\">Rollback Segment\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Rollback Segment\u662fOracle\u6578\u64da\u5eab\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u7d44\u4ef6\uff0c\u4e3b\u8981\u7528\u65bc\u652f\u6301\u4e8b\u52d9\u7684ACID\u7279\u6027\u3002\u7576\u4e00\u500b\u4e8b\u52d9\u9032\u884c\u4fee\u6539\u64cd\u4f5c\u6642\uff0cOracle\u6703\u5c07\u4fee\u6539\u524d\u7684\u6578\u64da\u5b58\u5132\u5728Rollback Segment\u4e2d\u3002\u9019\u6a23\uff0c\u5982\u679c\u4e8b\u52d9\u9700\u8981\u56de\u6efe\uff0cOracle\u53ef\u4ee5\u4f7f\u7528Rollback Segment\u4e2d\u7684\u6578\u64da\u4f86\u6062\u5fa9\u5230\u4e8b\u52d9\u958b\u59cb\u4e4b\u524d\u7684\u72c0\u614b\u3002<\/p>\n<h2 id=\"rollback-segment%e7%9a%84%e6%80%a7%e8%83%bd%e5%bd%b1%e9%9f%bf%e5%9b%a0%e7%b4%a0-ZIbUabOSPw\">Rollback Segment\u7684\u6027\u80fd\u5f71\u97ff\u56e0\u7d20<\/h2>\n<p>Rollback Segment\u7684\u6027\u80fd\u53d7\u5230\u591a\u7a2e\u56e0\u7d20\u7684\u5f71\u97ff\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5927\u5c0f\uff1a<\/strong>Rollback Segment\u7684\u5927\u5c0f\u76f4\u63a5\u5f71\u97ff\u5176\u80fd\u5920\u5b58\u5132\u7684\u6578\u64da\u91cf\u3002\u5982\u679cRollback Segment\u904e\u5c0f\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u983b\u7e41\u7684\u56de\u6efe\uff0c\u5f9e\u800c\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<li><strong>\u6578\u91cf\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\uff0cRollback Segment\u7684\u6578\u91cf\u4e5f\u6703\u5f71\u97ff\u6027\u80fd\u3002\u904e\u5c11\u7684Rollback Segment\u53ef\u80fd\u6703\u5c0e\u81f4\u8cc7\u6e90\u7af6\u722d\u3002<\/li>\n<li><strong>\u914d\u7f6e\uff1a<\/strong>Rollback Segment\u7684\u914d\u7f6e\u53c3\u6578\uff0c\u5982INITIAL\u3001NEXT\u3001MINEXTENTS\u548cMAXEXTENTS\u7b49\uff0c\u5c0d\u6027\u80fd\u6709\u76f4\u63a5\u5f71\u97ff\u3002<\/li>\n<\/ul>\n<h2 id=\"rollback-segment%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%b3%95-ZIbUabOSPw\">Rollback Segment\u7684\u512a\u5316\u65b9\u6cd5<\/h2>\n<h3 id=\"1-%e5%a2%9e%e5%8a%a0rollback-segment%e7%9a%84%e5%a4%a7%e5%b0%8f-ZIbUabOSPw\">1. \u589e\u52a0Rollback Segment\u7684\u5927\u5c0f<\/h3>\n<p>\u70ba\u4e86\u63d0\u9ad8Rollback Segment\u7684\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u589e\u52a0\u5176\u5927\u5c0f\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4fee\u6539Rollback Segment\u7684\u53c3\u6578\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER DATABASE DATAFILE 'rollback01.dbf' RESIZE 100M;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fddRollback Segment\u6709\u8db3\u5920\u7684\u7a7a\u9593\u4f86\u5b58\u5132\u4e8b\u52d9\u7684\u820a\u6578\u64da\uff0c\u5f9e\u800c\u6e1b\u5c11\u56de\u6efe\u7684\u983b\u7387\u3002<\/p>\n<h3 id=\"2-%e5%a2%9e%e5%8a%a0rollback-segment%e7%9a%84%e6%95%b8%e9%87%8f-ZIbUabOSPw\">2. \u589e\u52a0Rollback Segment\u7684\u6578\u91cf<\/h3>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u589e\u52a0Rollback Segment\u7684\u6578\u91cf\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u8cc7\u6e90\u7af6\u722d\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u4f86\u5275\u5efa\u65b0\u7684Rollback Segment\uff1a<\/p>\n<pre><code>CREATE ROLLBACK SEGMENT rollback02\n    TABLESPACE users\n    STORAGE (INITIAL 5M NEXT 5M MINEXTENTS 1 MAXEXTENTS UNLIMITED);<\/code><\/pre>\n<h3 id=\"3-%e8%aa%bf%e6%95%b4rollback-segment%e7%9a%84%e9%85%8d%e7%bd%ae%e5%8f%83%e6%95%b8-ZIbUabOSPw\">3. \u8abf\u6574Rollback Segment\u7684\u914d\u7f6e\u53c3\u6578<\/h3>\n<p>\u6839\u64da\u5be6\u969b\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u8abf\u6574Rollback Segment\u7684\u914d\u7f6e\u53c3\u6578\u4e5f\u662f\u4e00\u7a2e\u6709\u6548\u7684\u512a\u5316\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u6839\u64da\u4e8b\u52d9\u7684\u5927\u5c0f\u548c\u983b\u7387\u4f86\u8abf\u6574INITIAL\u548cNEXT\u7684\u5927\u5c0f\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<pre><code>ALTER ROLLBACK SEGMENT rollback01\n    STORAGE (INITIAL 10M NEXT 10M);<\/code><\/pre>\n<h3 id=\"4-%e5%ae%9a%e6%9c%9f%e7%9b%a3%e6%8e%a7%e5%92%8c%e7%b6%ad%e8%ad%b7-ZIbUabOSPw\">4. \u5b9a\u671f\u76e3\u63a7\u548c\u7dad\u8b77<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7Rollback Segment\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u53ca\u6642\u6e05\u7406\u4e0d\u518d\u4f7f\u7528\u7684Rollback Segment\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u5347\u6027\u80fd\u3002\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u53ef\u4ee5\u67e5\u770bRollback Segment\u7684\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n<pre><code>SELECT segment_name, bytes, status\nFROM dba_rollback_segs;<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-ZIbUabOSPw\">\u7d50\u8ad6<\/h2>\n<p>Rollback Segment\u7684\u512a\u5316\u5c0d\u65bc\u63d0\u5347Oracle\u6578\u64da\u5eab\u7684\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u589e\u52a0Rollback Segment\u7684\u5927\u5c0f\u548c\u6578\u91cf\u3001\u8abf\u6574\u914d\u7f6e\u53c3\u6578\u4ee5\u53ca\u5b9a\u671f\u76e3\u63a7\u548c\u7dad\u8b77\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u8cc7\u6e90\u7af6\u722d\uff0c\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6574\u9ad4\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\uff0c\u9019\u4e9b\u512a\u5316\u63aa\u65bd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\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\">\u4e91\u670d\u52a1\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\u6027\u80fd\u512a\u5316\u4e2d\u7684Rollback Segment\u512a\u5316\u6280\u5de7\uff0c\u63d0\u9ad8\u6578\u64da\u5eab\u6548\u7387\uff0c\u6e1b\u5c11\u6027\u80fd\u74f6\u9838\uff0c\u78ba\u4fdd\u7cfb\u7d71\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-96146","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96146","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=96146"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96146\/revisions"}],"predecessor-version":[{"id":96147,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96146\/revisions\/96147"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}