remove_connections.sql

-- To mark database 'applogs' as not accepting new connections:

update pg_database set datallowconn = false where datname = 'TARGET_DB';


/* Query pg_stat_activity and get the pid values you want to kill,
then issue SELECT pg_terminate_backend(pid int) to them. */

SELECT pg_terminate_backend(pg_stat_activity.pid)
FROM pg_stat_activity
WHERE pg_stat_activity.datname = 'TARGET_DB'
  AND pid <> pg_backend_pid();