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Terminate postgres connections to a database

19 Sep 2012 |

Sometimes I want to alter a PostgreSQL database in some way but I am prevented by other connections, as this error indicates:

ERROR:  database "my_database" is being accessed by other users
DETAIL:  There are 2 other session(s) using the database.

It's not always easy to figure out which applications have open sessions, so here's a great script I found on Stack Overflow to terminate all connections to the database:

    -- don't kill my own connection!
    procpid <> pg_backend_pid()
    -- don't kill the connections to other databases
    AND datname = 'my_database'