Can't rename an existnig DB because it doesn't exist???

V8.2.0 on Linux

Can't rename a db, complains that it doesn't exist. Yet psql -l shows
that it does and I can connect to it ???

mmdcc228_SETUP(120)% psql stdb2 -c "alter database stdb rename to
stdb_tmp"

ERROR: database "stdb" does not exist

mmdcc228_SETUP(121)% psql -l

List of databases

Name | Owner | Encoding

--------------+----------+----------

cells | dfgauthi | UTF8

cells_dev | dfgauthi | UTF8

postgres | dfgauthi | UTF8

stdb | dfgauthi | UTF8

stdb2 | dfgauthi | UTF8

stdb_standby | dfgauthi | UTF8

template0 | dfgauthi | UTF8

template1 | dfgauthi | UTF8

(8 rows)

mmdcc228_SETUP(122)% psql stdb

Welcome to psql 8.2.0, the PostgreSQL interactive terminal.

Type: \copyright for distribution terms

\h for help with SQL commands

\? for help with psql commands

\g or terminate with semicolon to execute query

\q to quit

stdb=#