I am definitly sure, that I havn't a network error or SQL server error. When I was rollbacked MDAC to version 2.71.9030, this store procedure worked without problem.

The same error occurs when I have tested Windows 2003 server and I used it as workstation. When I have run Query Analyzer and have connected with it to another Windows 2000 server with SQL 2000, SP3, the same error have been happend with another bigger store procedure.

Anton