after I applied the April 2020 Patch Bundle for the an 18c DB Iget in the following error.
Root cause: java.rmi.ServerError: Error occurred in server thread; nested exception is:
java.lang.Error: Incompatible version of libocijdbc[Jdbc:180000, Jdbc-OCI:189000
I found the information that this points to a mismatch in thin and thick dirver.
Therfore I checked the folder jdbc\lib and there is now an older ojdbc8.jar then before.
How can this happen? And how I get the correct version?