I am trying to figure out the correct syntax for executing
a stored procedure on a remote Oracle server.

The stored procedure has 2 input parameters and the Oracle
server is defined as a Linked Server under SQL Server 2000.

I can make selections of tables on the Oracle server.

The following example I already tried, without success:

Exec ORACLENAME..USER.SP input1,input2

and

SELECT *
FROM OPENQUERY(ORACLENAME,'BEGIN USER.SP(input1,input2)
end

Can someone help me. I know to little of Oracle (SQL
Server) to find this out myself in reasonable amount of
time.