Oracle JDBC version specified at the UIM primary hub installation
Where is is taken/specified the Oracle jdbc version during the UIM primary hub installation (fresh installation)?
UIM 8.5.1 ORACLE 11.2
At install time, you can specify which Oracle instant-client version to install.
This is the version data_engine picks up and uses when inserting data into the DB.
Even if we ship an updated driver with the product, you could still pick a bad version of the instant client at install time.