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  • gauss杀进程

    1)查询当前所有连接的状态

    select datname,pid,application_name,state from pg_stat_activity;
    

    2)关闭当前state为 idle 空闲状态的连接

    查看数据库剩余连接数:

    select max_conn-now_conn as resi_conn from (select setting::int8 as max_conn,(select count(*) from pg_stat_activity) as now_conn from pg_settings where name = 'max_connections') t;
    

    查看为超级用户保留的连接数: 

    show superuser_reserved_connections;
    

    psql: FATAL:  53300: sorry, too many clients already

    数据库连接已满,无法建立新的连接。
    1、关闭空闲连接

    select datname,pid,application_name,state from pg_stat_activity;
    

    --查看目前所有的连接的进程id、应用名称、状态。

    select pg_terminate_backend(pid) from pg_stat_activity;
    

    --通过pid终止空闲连接

    当前总共正在使用的连接数:

    select count(1) from pg_stat_activity;
    

    显示系统允许的最大连接数

    show max_connections;
    

    显示系统保留的用户数

    show superuser_reserved_connections ;
    

    –按照用户分组查看

    select usename, count(*) from pg_stat_activity group by usename order by count(*) desc;
    

    结束连接的进程

    SELECT pg_terminate_backend(15278);
    

    --杀死所有idle的进程:

    postgres=# select pg_terminate_backend(pid) from pg_stat_activity where state=’idle’;
    
    pg_terminate_backend
    t
    t
    (2 rows)
     
    我凝视这恒星,等待这那场风暴,我已经准备好了
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  • 原文地址:https://www.cnblogs.com/cheng5350/p/14329731.html
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