如何解决此错误“需要冻结xid截止点1601650960之前的未提交的xmin 1358613895”

我的postgresql日志文件中出现以下错误。寻求有关如何修复它们的帮助。

PostgreSQL版本是9.6

==> postgresql-2020-03-10.log

{

  title: {
    type: String,required: [true,"Title is required for Project"]
  },...
  activities: [
    {
      name: {
        type: String,required: true
      }
                ...

      ]
    }
  ],createdOn: { type: Date,default: Date.now }
}

==> postgresql-2020-03-10.csv

2020-03-10 10:48:19 EAT|||ERROR:  uncommitted xmin 1358613895 from before xid cutoff 1601650960 needs to be frozen
2020-03-10 10:48:19 EAT|||CONTEXT:  automatic vacuum of table "schema.public.tablename"
jayxh314 回答:如何解决此错误“需要冻结xid截止点1601650960之前的未提交的xmin 1358613895”

您要验证的事物:

  1. 找到任何长期未完成的准备交易
    SELECT * FROM pg_prepared_xacts ;
  1. 检查是否有1358613895的未结交易
SELECT * FROM pg_stat_activity WHERE backend_xid = 1358613895 OR backend_xmin = 1358613895

OR

SELECT * FROM pg_stat_activity WHERE now() - xact_start <= INTERVAL '1 days'

如果使用上述SQL查找任何长事务,则取消该事务。如果您找不到任何多头交易,则可以选择以下其中一项: 一种。关闭Postgres并以单用户模式运行PostgreSQL并执行VACUUM操作。 b。在一笔交易中,执行以下操作

     BEGIN;
     CREATE TABLE public.tablename_copy AS SELECT * FROM public.tablename;
     TRUNCATE TABLE public.tablename;
     INSERT INTO public.tablename SELECT * FROM public.tablename_copy;
     DROP TABLE public.tablename_copy;
     END;
 -- OR ---
     BEGIN;
     COPY public.tablename TO '/tmp/tablename.data';
     TRUNCATE TABLE public.tablename;
     COPY public.tablename FROM '/tmp/tablename.data';
     END;

执行

VACUUM FREEZE ANALYZE;
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