Will DOA 4.1.1 be available for Delphi 6 any time soon (or at all)? We currently use 4.0.7.1 and we're having issues with Oracle Client 11. Specifically, updateable records sets don't update - null values are being sent, causing ORA-01400 errors. I understand client 11 support was added in 4.1.1. Please correct me if I'm wrong.

Direct Oracle Access 4.1.1 for Delphi 6 is already available on our web site.

This will probably not affect your ORA-01400 errors though, which simply indicates that you are updating or inserting a null value for a mandatory column. You should probably enable TOracleDataSet.Debug or use the Oracle Monitor to investigate the exact statement that leads to this error.