database postgres not found

Hello,

I've a problem with a PostgreSQL 12.x server not setup or managed by me. that
the database 'postgres' is not found:

$ psql -Upostgres postgres
psql: error: ERROR: no such database: postgres

but the database is there as a SELECT shows:

$ psql -Upostgres lbs_lbsoclc01_dev_r1
psql (12.11)
Type "help" for help.

lbs_lbsoclc01_dev_r1=# select * from pg_database where datname = 'postgres' ;
oid | datname | datdba | encoding | datcollate | datctype | datistemplate | datallowconn | datconnlimit | datlastsysoid | datfrozenxid | datminmxid | dattablespace | datacl
-------+----------+--------+----------+-------------+-------------+---------------+--------------+--------------+---------------+--------------+------------+---------------+--------
14344 | postgres | 10 | 6 | en_US.UTF-8 | en_US.UTF-8 | f | t | -1 | 14343 | 479 | 1 | 1663 |
(1 row)

What does this mean?

Thanks

matthias

--
Matthias Apitz, ✉ guru(at)unixarea(dot)de, http://www.unixarea.de/ +49-176-38902045
Public GnuPG key: http://www.unixarea.de/key.pub