DB is inconsistent after the heterogenous system copy

Hi!

I have currently serios problems working with SAP ERP 2005 (SAP DB on Windows) that was installed via heterogenous system.

Entering into db-relevant tcodes such as DB13, etc. retrieves a dump "ITAB_DUPLICATE_KEY".

Furthermore it is not possible to execute the patch in tcode SPAM, because the patch is hanging in the phase "IMPORT_PROPER" (the DD structure seems to be inconsistent).

Can someone describe the procedure with technical steps to solve the problem?

Thank you very much!

regards

Thom