Killing sessions for database in postgres

SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE pid  pg_backend_pid() AND datname = 'dbname';

For old versions of postgres:

SELECT pg_terminate_backend(procpid) FROM pg_stat_activity 
WHERE procpid  pg_backend_pid() AND datname = 'database_name';

More: http://stackoverflow.com/questions/5108876/kill-a-postgresql-session-connection


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