1.项目启动时报错

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

--查看当前的连接
select datname,pid,application_name,state from pg_stat_activity;

--查看当前剩余的连接
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;

--关闭无用的连接
SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE state='idle';