{"id":1718,"date":"2021-04-22T23:09:59","date_gmt":"2021-04-22T15:09:59","guid":{"rendered":"https:\/\/199604.com\/?p=1718"},"modified":"2021-04-22T23:09:59","modified_gmt":"2021-04-22T15:09:59","slug":"greenplum%e7%bb%b4%e6%8a%a4%e5%b9%b4%e9%be%84%e7%9a%84%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/199604.com\/1718","title":{"rendered":"GreenPlum\u7ef4\u62a4\u5e74\u9f84\u7684\u5904\u7406"},"content":{"rendered":"<p>\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\u6b64\u6d88\u606f\uff0c\u8b66\u544a\u60a8\u6b63\u5728\u8fdb\u884c\u4e8b\u52a1\u5904\u7406\uff1a<\/p>\n<p>WARNING: database \u201clte_mr\u201d must be vacuumed within 113330803 transactions\uff0c\u5982\u4e0b\u56fe\u75af\u72c2\u51fa\u73b0\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/qn.199604.com\/typoraImg\/image-20210422225724569.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/qn.199604.com\/typoraImg\/image-20210422225724569.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20210422225724569\" \/><\/div><\/p>\n<p>\u6216\u8005\u66f4\u7cdf\u7cd5\u7684\u662f\uff0c\u4ee5\u4e0b\u6d88\u606f\u8868\u660e\u60a8\u5df2\u7ecf\u5b8c\u6210\u4e86 <strong>transaction wraparound<\/strong><\/p>\n<h5>\u5904\u7406\u65b9\u6cd5\uff1a<\/h5>\n<p>\u5728\u9002\u5f53\u7684\u6570\u636e\u5e93\u4e0a\u6267\u884c\u5efa\u8bae\u7684VACUUM; \u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u9ed8\u8ba4\u6570\u636e\u5e93<code>lte_mr<\/code>\uff0c\u56e0\u6b64\u7528\u9002\u5f53\u7684\u6570\u636e\u5e93\u540d\u79f0\u66ff\u6362\u8be5\u540d\u79f0\u3002<\/p>\n<pre><code class=\"language-sql\" lang=\"sql\">psql -d lte_mr -c \"vacuum freeze\"\r\n<\/code><\/pre>\n<p>\u5f53\u8868\u7684\u5e74\u9f84\u5927\u4e8eautovacuum_freeze_max_age\u65f6\uff08\u9ed8\u8ba4\u662f2\u4ebf\uff09\uff0cautovacuum\u8fdb\u7a0b\u4f1a\u81ea\u52a8\u5bf9\u8868\u8fdb\u884cfreeze\u3002<\/p>\n<h5>\u2013\u67e5\u8be2\u5e93xid<\/h5>\n<pre><code class=\"language-sql\" lang=\"sql\">SELECT datname, age(datfrozenxid) FROM pg_database;\r\n<\/code><\/pre>\n<h5>\u67e5\u8be2\u6bcf\u4e2a\u8868\u7684xid\u4f7f\u7528\u7a0b\u5ea6\uff1a<\/h5>\n<pre><code class=\"language-sql\" lang=\"sql\">SELECT relname, age(relfrozenxid) as xid_age, pg_size_pretty(pg_relation_size(oid)) as table_size \r\nFROM pg_class WHERE relkind = 'r' and pg_relation_size(oid) &gt; 1073741824\r\nORDER BY age(relfrozenxid) DESC LIMIT 20;\r\n<\/code><\/pre>\n<p>\u5efa\u8bae\u4f7f\u7528vacuum freeze [ table_name ] \u6765\u5bf9\u6307\u5b9a\u7684\u8868\u8fdb\u884cxid \u51bb\u7ed3\u6e05\u7406,\u56e0\u4e3a\u6574\u4e2a\u5e93\u7684\u8bdd\u57fa\u672c\u4e0a\u65f6\u95f4\u65e0\u6cd5\u786e\u8ba4<\/p>\n<h5>\u6279\u91cf\u64cd\u4f5c\uff1a<\/h5>\n<h6>\u6bcf\u4e2a\u8868\u8fdb\u884c\u64cd\u4f5c\uff1a<\/h6>\n<pre><code class=\"language-sql\" lang=\"sql\">select 'psql -d lte_mr' || ' ' || '\"VACUUM FREEZE '|| schemaname || '.' ||tablename || '\";' \r\nfrom pg_tables\r\n<\/code><\/pre>\n<p>\u5148\u6267\u884c\u8fd9\u4e2asql \u628a\u8fd9\u4e2asql \u7684\u6267\u884c\u7ed3\u679c\u91cd\u5b9a\u5411\u5230\u4e00\u4e2asql\u6587\u4ef6\u4e2d\uff0c\u7136\u540e\u6267\u884c\u8fd9\u4e2a\u6587\u4ef6\u5373\u53ef\u3002<\/p>\n<h6>\u76f4\u63a5\u6570\u636e\u5e93\u7ea7\u522b\u8fdb\u884c\u64cd\u4f5c\uff1a<\/h6>\n<pre><code class=\"language-shell\" lang=\"shell\">#!\/bin\/bash\r\nsource \/home\/gpadmin\/.bash_profile\r\npsql -d postgres -c \"vacuum freeze\"\r\npsql -d lte_mr -c \"vacuum freeze\"\r\npsql -d pe2e_lte -c \"vacuum freeze\"\r\n<\/code><\/pre>\n<p>\u5728\u76f4\u63a5\u6267\u884c<code>nohup  sh vacuum.sh &gt; vacuum.log  2&gt;&amp;1 &amp;<\/code>\u547d\u4ee4<\/p>\n<p>\u53c2\u8003\uff1a<a class=\"url\" href=\"https:\/\/blog.csdn.net\/MyySophia\/article\/details\/78925011\" target=\"_blank\" rel=\"noopener\">https:\/\/blog.csdn.net\/MyySophia\/article\/details\/78925011<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\u6b64\u6d88\u606f\uff0c\u8b66\u544a\u60a8\u6b63\u5728\u8fdb\u884c\u4e8b\u52a1\u5904\u7406\uff1a WARNING: database \u201clte_mr\u201d mu [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[304,282],"tags":[276],"class_list":["post-1718","post","type-post","status-publish","format-standard","hentry","category-greenplum","category-postgresql","tag-greenplum"],"_links":{"self":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/1718","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/comments?post=1718"}],"version-history":[{"count":2,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/1718\/revisions"}],"predecessor-version":[{"id":1874,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/1718\/revisions\/1874"}],"wp:attachment":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/media?parent=1718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/categories?post=1718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/tags?post=1718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}