{"id":1141,"date":"2021-12-04T10:57:34","date_gmt":"2021-12-04T02:57:34","guid":{"rendered":"http:\/\/dba.qishuo.xin\/?p=1141"},"modified":"2021-12-04T16:01:08","modified_gmt":"2021-12-04T08:01:08","slug":"ora-01555-%e5%8e%9f%e5%9b%a0%e4%b8%8e%e8%a7%a3%e5%86%b3","status":"publish","type":"post","link":"http:\/\/dba.qishuo.xin\/?p=1141","title":{"rendered":"ORA-01555 \u539f\u56e0\u4e0e\u89e3\u51b3"},"content":{"rendered":"<p>\u8f6c\u8f7d\u4e8e\uff1ahttp:\/\/www.dbtan.com\/2010\/01\/ora-01555-reason-and-solution.html<br \/>\n\u8fd8\u6709\u4e00\u7bc7\u66f4\u8be6\u7ec6\uff1ahttps:\/\/cloud.tencent.com\/developer\/article\/1052530<\/p>\n<p>ORA-01555\u9519\u8bef\u662f\u600e\u6837\u4ea7\u751f\u7684\u5462\uff1f\u7531\u4e8e\u56de\u6eda\u6bb5\u662f\u5faa\u73af\u4f7f\u7528\u7684\uff0c\u5f53\u4e8b\u52a1\u63d0\u4ea4\u4ee5\u540e\uff0c\u8be5\u4e8b\u52a1\u5360\u7528\u7684\u56de\u6eda\u6bb5\u4e8b\u52a1\u4f1a\u88ab\u6807\u8bb0\u4e3a\u975e\u6d3b\u52a8\uff0c\u56de\u6eda\u6bb5\u7a7a\u95f4\u53ef\u4ee5\u88ab\u8986\u76d6\u91cd\u7528\u3002\u90a3\u4e48\u4e00\u4e2a\u95ee\u9898\u5c31\u51fa\u73b0\u4e86\uff0c\u5982\u679c\u4e00\u4e2a\u67e5\u8be2\u9700\u8981\u4f7f\u7528\u88ab\u8986\u76d6\u7684\u56de\u6eda\u6bb5\u6784\u9020\u524d\u955c\u50cf\u5b9e\u73b0\u4e00\u81f4\u6027\u8bfb\uff0c\u90a3\u4e48\u6b64\u65f6\u5c31\u4f1a\u51fa\u73b0Oracle\u8457\u540d\u7684ORA-01555\u9519\u8bef\u3002<\/p>\n<p>ORA-01555\u9519\u8bef\u7684\u53e6\u5916\u4e00\u4e2a\u539f\u56e0\u662f\u56e0\u4e3a\u5ef6\u8fdf\u5757\u6e05\u9664\uff08Delayed Block Cleanout\uff09\u3002\u5f53\u4e00\u4e2a\u67e5\u8be2\u89e6\u53d1\u5ef6\u8fdf\u5757\u6e05\u9664\u65f6\uff0cOracle\u9700\u8981\u53bb\u67e5\u8be2\u56de\u6eda\u6bb5\u83b7\u5f97\u8be5\u4e8b\u52a1\u7684\u63d0\u4ea4SCN\uff0c\u5982\u679c\u4e8b\u52a1\u7684\u524d\u955c\u50cf\u4fe1\u606f\u5df2\u7ecf\u88ab\u8986\u76d6\uff0c\u5e76\u4e14\u67e5\u8be2SCN\u4e5f\u5c0f\u4e8e\u56de\u6eda\u6bb5\u4e2d\u8bb0\u5f55\u7684\u6700\u5c0f\u63d0\u4ea4SCN\uff0c\u90a3\u4e48Oracle\u5c06\u65e0\u4ece\u5224\u65ad\u67e5\u8be2SCN\u548c\u4e8b\u52a1\u63d0\u4ea4SCN\u7684\u5927\u5c0f\uff0c\u6b64\u65f6\u51fa\u73b0\u5ef6\u8fdf\u5757\u6e05\u9664\u5bfc\u81f4\u7684ORA-01555\u9519\u8bef\u3002<\/p>\n<p>\u53e6\u5916\u4e00\u79cd\u5bfc\u81f4ORA-01555\u9519\u8bef\u7684\u60c5\u51b5\u51fa\u73b0\u5728\u4f7f\u7528sqlldr\u76f4\u63a5\u65b9\u5f0f\u52a0\u8f7d\uff08direct=true\uff09\u6570\u636e\u65f6\u3002\u5f53\u901a\u8fc7sqlldr direct=true \u65b9\u5f0f\u52a0\u8f7d\u6570\u636e\u65f6\uff0c\u7531\u4e8e\u4e0d\u4ea7\u751f\u91cd\u505a\u548c\u56de\u6eda\u4fe1\u606f\uff0cOracle\u76f4\u63a5\u6307\u5b9aCached Commit SCN \u7ed9\u52a0\u8f7d\u6570\u636e\uff0c\u5728\u8bbf\u95ee\u8fd9\u4e9b\u6570\u636e\u65f6\uff0c\u6709\u65f6\u4f1a\u4ea7\u751fORA-01555\u9519\u8bef\u3002<\/p>\n<p>\u770b\u4e0b\u56fe\u7684\u63cf\u8ff0\uff1a\u5047\u5b9a\u5728\u65f6\u95f4T\u7528\u6237A\u53d1\u51fa\u4e00\u6761\u66f4\u65b0\u8bed\u53e5\uff0c\u66f4\u65b0SCOTT\u7528\u6237\u7684SAL\uff1b\u7528\u6237B\u5728Ty\u65f6\u95f4\u53d1\u51fa\u67e5\u8be2\u8bed\u53e5\uff0c\u67e5\u8be2SCOTT\u7528\u6237\u7684SAL\uff1b\u7528\u6237A\u7684\u66f4\u65b0\u5728Tx\u65f6\u95f4\u63d0\u4ea4\uff0c\u63d0\u4ea4\u53ef\u80fd\u4e3a\u5feb\u901f\u63d0\u4ea4\u5757\u6e05\u9664\uff0c\u4e5f\u53ef\u80fd\u662f\u5ef6\u8fdf\u5757\u6e05\u9664\uff1b\u7528\u6237B\u7684\u67e5\u8be2\u5728Tz\u65f6\u95f4\u8f93\u51fa\u3002<\/p>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_70908c28f97659f1ba8d644a33305b6d.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_70908c28f97659f1ba8d644a33305b6d.jpg\" alt=\"\" \/><\/a><\/p>\n<p>\u6765\u770b\u4e00\u4e0b\u6570\u636e\u5e93\u5728\u4e0d\u540c\u60c5\u51b5\u4e0b\u7684\u5185\u90e8\u5904\u7406\uff1a<\/p>\n<ul>\n<li>\u5982\u679c Ty &lt; 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T \uff0c\u90a3\u4e48Oracle\u9700\u8981\u7ee7\u7eed\u6784\u9020\u4e00\u81f4\u6027\u8bfb\u8fd4\u56de\u7ed9\u7528\u6237B\uff1bOracle\u65e0\u6cd5\u5224\u65ad\u8fd9\u4e24\u79cd\u60c5\u51b5\uff0c\u5c31\u4f1a\u51fa\u73b0\u5ef6\u8fdf\u5757\u6e05\u9664ORA-01555\u9519\u8bef\u3002<\/p>\n<\/li>\n<\/ul>\n<p>ORA-01555\u7684\u76f4\u89c2\u89e3\u91ca\u662f\u201csnapshot too old\u201d\uff0c\u4e5f\u5c31\u662f\u5feb\u7167\u592a\u65e7\uff0c\u5176\u6839\u672c\u542b\u4e49\u5c31\u662f\u67e5\u8be2\u9700\u8981\u7684\u524d\u955c\u50cf\u8fc7\u4e8e\u201c\u4e45\u8fdc\u201d\uff0c\u5df2\u7ecf\u65e0\u6cd5\u627e\u5230\u4e86\u3002\u53ef\u4ee5\u60f3\u8c61\uff0c\u5982\u679c\u4e00\u4e2a\u5386\u65f6\u6570\u4e2a\u5c0f\u65f6\u6216\u5341\u51e0\u4e2a\u5c0f\u65f6\u7684\u67e5\u8be2\uff0c\u5982\u679c\u6700\u540e\u906d\u9047ORA-01555\u9519\u8bef\u800c\u5931\u8d25\uff0c\u4f1a\u662f\u591a\u4e48\u4ee4\u4eba\u6cae\u4e27\u7684\u4e00\u4ef6\u4e8b\u3002\u4e00\u76f4\u4ee5\u6765\uff0cORA-01555\u90fd\u662fORACLE\u6700\u4e3a\u5934\u75db\u7684\u95ee\u9898\u4e4b\u4e00\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6c\u8f7d\u4e8e\uff1ahttp:\/\/www.dbtan.com\/&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,2],"tags":[157,16],"class_list":{"0":"post-1141","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-oracle","8":"tag-ora-01555","9":"tag-oracle"},"_links":{"self":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/1141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1141"}],"version-history":[{"count":4,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/1141\/revisions"}],"predecessor-version":[{"id":1158,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=\/wp\/v2\/posts\/1141\/revisions\/1158"}],"wp:attachment":[{"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1141"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/dba.qishuo.xin\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}