If the "Verify Database Connection" is checked then there is very poor performance in the next step during tables selection on JPA: Generate Entities From Tables wizard.

I don't understand what is going on behind the scenes - but there is for sure some communication with DB happening. Not sure if this is necessary as the list of tables is read correctly and imho the list should be just checked if there is at least one table selected.

It works without performance problems if "Verify Database Connection" was not checked in previous step.