{"id":94654,"date":"2024-10-19T20:03:17","date_gmt":"2024-10-19T12:03:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94654\/"},"modified":"2024-10-19T20:03:18","modified_gmt":"2024-10-19T12:03:18","slug":"oracle10g%e4%b8%adcurrent_scn%e7%9a%84%e6%ad%a3%e7%a2%ba%e8%a8%88%e7%ae%97%e9%81%8b%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94654\/","title":{"rendered":"Oracle10g\u4e2dcurrent_scn\u7684\u6b63\u78ba\u8a08\u7b97\u904b\u884c"},"content":{"rendered":"<h1 id=\"oracle10g%e4%b8%adcurrent_scn%e7%9a%84%e6%ad%a3%e7%a2%ba%e8%a8%88%e7%ae%97%e9%81%8b%e8%a1%8c-TZDdpGiJzT\">Oracle10g\u4e2dcurrent_scn\u7684\u6b63\u78ba\u8a08\u7b97\u904b\u884c<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0cSCN\uff08System Change Number\uff09\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u7528\u65bc\u8ddf\u8e2a\u6578\u64da\u5eab\u7684\u8b8a\u66f4\u3002\u7279\u5225\u662f\u5728Oracle10g\u4e2d\uff0ccurrent_scn\u7684\u8a08\u7b97\u5c0d\u65bc\u6578\u64da\u4e00\u81f4\u6027\u548c\u6062\u5fa9\u64cd\u4f5c\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u6b63\u78ba\u8a08\u7b97current_scn\uff0c\u4ee5\u53ca\u5176\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afscn%ef%bc%9f-TZDdpGiJzT\">\u4ec0\u9ebc\u662fSCN\uff1f<\/h2>\n<p>SCN\u662fOracle\u6578\u64da\u5eab\u7528\u4f86\u6a19\u8b58\u6578\u64da\u5eab\u8b8a\u66f4\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u3002\u6bcf\u7576\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u767c\u751f\u8b8a\u66f4\u6642\uff0cOracle\u6703\u81ea\u52d5\u751f\u6210\u4e00\u500b\u65b0\u7684SCN\u3002\u9019\u4f7f\u5f97\u6578\u64da\u5eab\u80fd\u5920\u5728\u4e0d\u540c\u7684\u6642\u9593\u9ede\u9032\u884c\u6062\u5fa9\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"current_scn%e7%9a%84%e5%ae%9a%e7%be%a9-TZDdpGiJzT\">current_scn\u7684\u5b9a\u7fa9<\/h2>\n<p>current_scn\u662f\u6307\u7576\u524d\u7684\u7cfb\u7d71\u8b8a\u66f4\u865f\u78bc\uff0c\u4ee3\u8868\u4e86\u6578\u64da\u5eab\u7684\u6700\u65b0\u72c0\u614b\u3002\u5b83\u5728\u6578\u64da\u5eab\u904b\u884c\u904e\u7a0b\u4e2d\u4e0d\u65b7\u66f4\u65b0\uff0c\u4e26\u4e14\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u4f86\u7372\u53d6\u3002\u4e86\u89e3current_scn\u7684\u503c\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u7dad\u8b77\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a8%88%e7%ae%97current_scn-TZDdpGiJzT\">\u5982\u4f55\u8a08\u7b97current_scn<\/h2>\n<p>\u5728Oracle10g\u4e2d\uff0c\u8a08\u7b97current_scn\u7684\u904e\u7a0b\u76f8\u5c0d\u7c21\u55ae\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u7372\u53d6\u7576\u524d\u7684SCN\uff1a<\/p>\n<pre><code>SELECT CURRENT_SCN FROM V$DATABASE;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u6578\u64da\u5eab\u7684SCN\u503c\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u9019\u500b\u503c\u6703\u96a8\u8457\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u800c\u4e0d\u65b7\u8b8a\u5316\uff0c\u56e0\u6b64\u5728\u9032\u884c\u6578\u64da\u5eab\u6062\u5fa9\u6216\u5176\u4ed6\u64cd\u4f5c\u6642\uff0c\u61c9\u8a72\u78ba\u4fdd\u4f7f\u7528\u6700\u65b0\u7684SCN\u503c\u3002<\/p>\n<h2 id=\"current_scn%e7%9a%84%e6%87%89%e7%94%a8-TZDdpGiJzT\">current_scn\u7684\u61c9\u7528<\/h2>\n<p>current_scn\u5728\u591a\u500b\u65b9\u9762\u90fd\u6709\u91cd\u8981\u7684\u61c9\u7528\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u6062\u5fa9\uff1a<\/strong>\u5728\u6578\u64da\u5eab\u5d29\u6f70\u6216\u6545\u969c\u7684\u60c5\u6cc1\u4e0b\uff0ccurrent_scn\u53ef\u4ee5\u7528\u4f86\u78ba\u5b9a\u6062\u5fa9\u7684\u8d77\u59cb\u9ede\uff0c\u5f9e\u800c\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u6578\u64da\u8907\u88fd\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u8907\u88fd\u6642\uff0ccurrent_scn\u53ef\u4ee5\u5e6b\u52a9\u78ba\u4fdd\u6e90\u6578\u64da\u548c\u76ee\u6a19\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u6027\u80fd\u76e3\u63a7\uff1a<\/strong>\u901a\u904e\u76e3\u63a7current_scn\u7684\u8b8a\u5316\uff0c\u53ef\u4ee5\u5206\u6790\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u8ca0\u8f09\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-TZDdpGiJzT\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528current_scn\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u7279\u5225\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5728\u9032\u884c\u4efb\u4f55\u64cd\u4f5c\u4e4b\u524d\u7372\u53d6\u6700\u65b0\u7684SCN\u503c\uff0c\u4ee5\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002<\/li>\n<li>\u5728\u9032\u884c\u6578\u64da\u6062\u5fa9\u6642\uff0c\u61c9\u8a72\u4ed4\u7d30\u9078\u64c7SCN\u503c\uff0c\u4ee5\u78ba\u4fdd\u6062\u5fa9\u7684\u6578\u64da\u662f\u6b63\u78ba\u7684\u3002<\/li>\n<li>\u5b9a\u671f\u76e3\u63a7SCN\u7684\u8b8a\u5316\uff0c\u4ee5\u4fbf\u53ca\u6642\u767c\u73fe\u6f5b\u5728\u7684\u6027\u80fd\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-TZDdpGiJzT\">\u7d50\u8ad6<\/h2>\n<p>\u5728Oracle10g\u4e2d\uff0ccurrent_scn\u7684\u6b63\u78ba\u8a08\u7b97\u548c\u4f7f\u7528\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4e86\u89e3SCN\u7684\u6982\u5ff5\u53ca\u5176\u61c9\u7528\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u9032\u884c\u6578\u64da\u6062\u5fa9\u548c\u6027\u80fd\u76e3\u63a7\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u6578\u64da\u4e00\u81f4\u6027\u7684\u61c9\u7528\uff0c\u6b63\u78ba\u8655\u7406current_scn\u5c07\u6709\u52a9\u65bc\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u53ca\u5176\u4ed6<code>\u670d\u52a1\u5668<\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle10g\u4e2dcurrent_scn\u7684\u6b63\u78ba\u8a08\u7b97\u65b9\u6cd5\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9ad8\u6548\u6027\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\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-94654","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94654","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=94654"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94654\/revisions"}],"predecessor-version":[{"id":94655,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94654\/revisions\/94655"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}