Hello, testpos@srap53dxr1:~> psql --help ... -d, --dbname=DBNAME database name to connect to (default: "testpos") testpos@srap53dxr1:~> whoami testpos testpos@srap53dxr1:~> env | grep PG PGPASSWORD=xxxxxxxx PGHOST=localhost PGPORT=5432 testpos@srap53dxr1:~> LANG=C psql -Usisis psql (13.3) Type "help" for help. sisis=# \l List of databases Name | Owner | Encoding | Collate | Ctype | Access privileges -----------+----------+----------+-------------+-------------+----------------------- postgres | postgres | UTF8 | de_DE.UTF-8 | de_DE.UTF-8 | sisis | sisis | UTF8 | de_DE.UTF-8 | de_DE.UTF-8 | ... Why psql connects to the database 'sisis'? I was expecting that it will try to connect to a database 'testpos' as this is the UNIX login and as '-d....' was not specified. I was expecting in this case an error like this: testpos@srap53dxr1:~> export PGDATABASE=testpos testpos@srap53dxr1:~> psql -Usisis psql: error: FATAL: database »testpos« does not exist What do I uderstand wrong? matthias -- Matthias Apitz, ✉ guru@xxxxxxxxxxx, http://www.unixarea.de/ +49-176-38902045 Public GnuPG key: http://www.unixarea.de/key.pub Tear it down! Defund the Humboldt Forum! https://www.jungewelt.de/artikel/406715.humboldt-forum-feudaler-themenpark.html