Solution for the Stat Central Agent:
1. Shutdown the SCA
2. Renamed ojdbc6.jar as ojdbc6.jar.orig under $STAT_HOME/app/modules/oracle/jdbc/main
3. Download or copy the OJDBC driver (ojdbc8.jar) to $STAT_HOME/app/modules/oracle/jdbc/main
4. In the same folder edit the module.xml and modify the entry about the ojdbc used like below:
<resource-root path="ojdbc8.jar"/>
5. Start the SCA.
Solution for the Stat Oracle Agent
1. Log in to the EBS Unix machine, then go to OA_HOME and shut it down.
2. Go to OA_HOME/lib/oracle/ and rename ojdbc6.jar to ojdbc6.jar_old.
3. Copy in the same directory, the ojdbc8.jar from any 19c environment.
4. Delete the log files.
5. Bounce the OA and try a migration again.