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  • remaining connection slots are reserved for non-replication superuser connections

    使用客户端工具连接pg,连接失败,报错以下错误:

    FATAL: remaining connection slots are reserved for non-replication superuser connections 
    

    查看数据库连接状态和配置信息

    select * from pg_stat_activity where pid<>pg_backend_pid() and state='idle';##pg_backend_pid()的结果是当前会话的pid
    select datname,datconnlimit from pg_database ;
    select current_setting('max_connections');
    select current_setting('superuser_reserved_connections');
    

      

    发现参数max_connections设置太低。

    因为是测试环境,就先把idle状态的连接先杀掉:

    ##把数据库中的所有的空闲会话全部kill掉
    select pg_terminate_backend(pid) from pg_stat_activity where pid<>pg_backend_pid() and state='idle';
    

     然后修改参数max_connections的值。

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  • 原文地址:https://www.cnblogs.com/abclife/p/10955132.html
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