This might not be the right place to raise this, but the fix for the DB2 driver is only in DB297Dialect. I think it maybe should be in the DB2Dialect superclass instead, as that is the dialect that is automatically used when a DB2 connection is detected. Should I raise another bug?

(I'm raising this because I was experiencing the setNChar issue when connecting to DB2, and I looked at the commit https://github.com/hibernate/hibernate-orm/commit/005d5b7c748c4c03afddae43a6fc2299869ab0f9#diff-b1052d2e415405ea6c0e4cd1a0403077 on finding this thread.)