When I tried to upgrade my Oracle JDBC driver from ojdbc8 19.6.0.0 to ojdbc11 21.6.0.0.1 I started to receive the following exception when trying to do a batch insert with ids being generated in the database:
java.lang.AssertionError: autoKeyInfo is not initialized
I created a reproducer for this.
How can I resolve this problem?
This seems to be a bug in the later versions of the Oracle JDBC drivers. They have the findings in the issue tracker, but I have nothing to link to since it is not public.
The recommended workaround is to use the LTS driver version, which is ojdbc 19.15.0.0.1
https://docs.oracle.com/en/database/oracle/oracle-database/21/jjdbc/Oracle-extensions.html#GUID-9EC82134-1206-4325-A17B-9FA7610F0169 says "DML returning cannot be combined with batch update". Looks like a conscious regression in the newer driver versions.