PostgreSQL - Rename database

Question

I need to rename the database but when I do in PGAdmin : ALTER DATABASE \"databaseName\" RENAME TO \"databaseNameOld\" it told me that it cannot.

How c

Answer 1

For future reference, you should be able to:

-- disconnect from the database to be renamed
\c postgres

-- force disconnect all other clients from the database to be renamed
SELECT pg_terminate_backend( pid )
FROM pg_stat_activity
WHERE pid <> pg_backend_pid( )
    AND datname = 'name of database';

-- rename the database (it should now have zero clients)
ALTER DATABASE "name of database" RENAME TO "new name of database";

Note that table pg_stat_activity column pid was named as procpid in versions prior to 9.2. So if your PostgreSQL version is lower than 9.2, use procpid instead of pid.