Thanks, it works!

Nethertheless a little bit strange behavior. Microsoft writes : "you MAY receive the error..." Looks like a sporadic problem.

The value was 0 on windows 2003 where I...

The Filename contains 'C:\Intec'. The exact message on the server is 'SQLServer.exe : No Disk. There is no disc in the drive. Please insert a disc into drive A.'

Patrick SIMONS,...

But because I've to use a variable number of input-parameters (WHERE clause), I must use dynamic-SQL inside the stored-procedure ! So SQL-Server could not prepare the statement because it changes...