> The TIB_Cursor prevent IBO from automatically advancing the OAT. Why ?

It is not possible to "refresh" a cursor.

You must always use proper explicit control of a TIB_Cursor component.

I have written extensively on the things you need to be careful of in your
applications. TIB_Cursor is one of the items mentioned that you need to use
carefully.

Regards,
Jason Wharton
CPS - Mesa AZ
http://www.ibobjects.com