Hi, I am getting an error when trying to execute: >alter type target_kernel_demo add attribute (num_periods integer) cascade; alter type crabers.target_kernel_demo * ERROR at line 1: ORA-22312: must specify either CASCADE or INVALIDATE option I even specified 'cascade' in all caps, but Oracle didn't seem to understand what I meant ;-) There is another object that is dependent on this object type: CREATE OR REPLACE type tbl_target_kernel_demo is table of target_kernel_demo; / The strange thing is that the alter type worked fine on my development database, but is failing on a test database. The database version of both is 10.2.0.3.0 and running on Windows. It could be possible that one has a different patch set though. The Oracle Error book says that the alter type command could abort if there were dependencies, but I can't find any others. I also tried the FORCE option but I got the same error message. Does anyone have any other ideas of what I could look for or try? Thanks, ----------------------------------- Alan Davey Senior Developer Advertising Systems Group Harris Corporation, Broadcast Communications 4 Century Drive Parsippany, NJ 07054 -- //www.freelists.org/webpage/oracle-l