If you receive the error
then the parameter standard_conforming_strings is turned on.
This parameter is turned on by default since PostgreSQL 9.1.
The JobScheduler expected at the time that this parameter is turned off.
We will change this behaviour, see JS-781 - "SCHEDULER-451 Database check failed, database is not useable" for Postgres if the parameter "standard_conforming_strings" is turned on Released
Until that happens, you can change the value of standard_conforming_strings in the postgresql.conf file or only for the JobScheduler user via following SQL: