Can you try to switch off batch JDBC processing in engine configuration like this:
<property name="jdbcBatchProcessing" value="false"/>
It should work on Oracle 12, but let’s be sure, that this is not the reason of the problem.
Can you try to switch off batch JDBC processing in engine configuration like this:
<property name="jdbcBatchProcessing" value="false"/>
It should work on Oracle 12, but let’s be sure, that this is not the reason of the problem.