As part of the PostgreSQL series, in today’s tutorial, we are going to focus on how to list and terminate connections.
Terminate, kill and drop are used interchangeably.
Drop all connections to a specific database except yours
SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity WHERE pg_stat_activity.datname = '<database_name>' AND pid <> pg_backend_pid();
List and kill idle connections
Step 1. First things first, list all idle connections.
SELECT pid, usename, datid, datname, state FROM pg_stat_activity WHERE state = 'idle';
Step 2. Kill an idle connection.
Terminating connections manually is not a good practice, but it works good in development and testing environments. Always make sure to find the root cause why you have idle, or unwanted connections in the first place.
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