Kill a postgresql session/connection
You can use pg_terminate_backend() to kill a connection. You have to be superuser to use this function. This works on all operating systems the same.
SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE -- don't kill my own connection! pid <> pg_backend_pid() -- don't kill the connections to other databases AND datname = 'database_name' ;Before executing this query, you have to REVOKE the CONNECT privileges to avoid new connections:
REVOKE CONNECT ON DATABASE dbname FROM PUBLIC, username;If you're using Postgres 8.4-9.1 use procpid instead of pid
SELECT pg_terminate_backend(procpid) FROM pg_stat_activity WHERE -- don't kill my own connection! procpid <> pg_backend_pid() -- don't kill the connections to other databases AND datname = 'database_name' ;
With all infos about the running process:
SELECT *, pg_terminate_backend(pid)FROM pg_stat_activity WHERE pid <> pg_backend_pid()AND datname = 'my_database_name';