Docs say: Only the database owner or a superuser can rename a database;
non-superuser owners must also have the CREATEDB privilege.
Looks like a superuser must have CREATEDB too:
fduch@~=# SELECT usesuper, usecreatedb from pg_user where usename = 'fduch';
usesuper | usecreatedb
----------+-------------
t | f
(1 row)
fduch@~=# CREATE DATABASE test owner stat;
CREATE DATABASE
fduch@~=# ALTER DATABASE test RENAME TO work;
ERROR: permission denied to rename database
fduch@~=# ALTER DATABASE test OWNER TO fduch ;
ALTER DATABASE
fduch@~=# ALTER DATABASE test RENAME TO work;
ERROR: permission denied to rename database
At last:
fduch@~=# ALTER USER fduch CREATEDB ;
ALTER USER
fduch@~=# ALTER DATABASE test RENAME TO work;
ALTER DATABASE
fduch@~=# ALTER DATABASE work OWNER TO stat;
ALTER DATABASE
fduch@~=# ALTER DATABASE work RENAME TO test;
ALTER DATABASE
PostgreSQL 8.0.1 on i386-portbld-freebsd5.3, compiled by GCC cc (GCC) 3.4.2 [FreeBSD] 20040728
--
Fduch M. Pravking