Multiple Versions of PostgreSQL®

If you have multiple versions of PostgreSQL®, note that the installation order impacts the order of the versions. The environment variables must contain the path to the wincc_oa_dir/bin/pgsql directory to make sure that the right version PostgreSQL® V16) is used.

To check the client version, use the following command in the command prompt:

psql --version

For the server version call the SQL query:

SELECT version();