- Plesk Onyx 17.8 for Linux
Unable to configure PostgreSQL in Plesk Onyx on Ubuntu 18.04 with the error below:
PLESK_ERROR: Error: The test connection to the database server has failed:
ERROR: invalid input syntax for type oid: ""
LINE 1: SELECT relname FROM pg_class WHERE relowner = '' AND relkind...
- #PPPM-8775 " PostgreSQL can now be configured in Ubuntu 18.04. "
- Plesk Onyx 17.8.11 Update 42 25 February 2019 (Linux)
If update is not possible for some reason you may try the following
Install the latest micro-updates
Note: in case the same error message occurs on another OS (for example on Ubuntu 16.04 with PostgreSQL 10), then disable custom repositories, remove PostgreSQL via Plesk installer and clean up the packages as described in the following article: PostgreSQL has left over packages after it was removed via Plesk installer