calling remote procedure on oracle linked servre

I have linked Oracle Server as a linked server on my SQL server.

Now i want to execute the stored procedure on oracle server which has one input parameter and one output parameter.

i am using the following sql statements in SQL Server Query analyzer to execute that procedure

declare @.sal float
exec [GENEVA].testDB.dbo.EmployeeOutPrm
'1',
@.sal output

but getting the following error:

Server: Msg 7212, Level 17, State 1, Line 3
Could not execute procedure 'EmployeeOutPrm' on remote server 'GENEVA'.
[OLE/DB provider returned message: One or more errors occurred during processing of command.]
[OLE/DB provider returned message: Syntax error in {call...} ODBC Escape.]

COULD ANYBODY HELP ME TO RESOLVE THE SAME

many thanks in advance
bhavyaThe only way i have heard of anyone do that was a roundabout way that worked something like this (I forget the link but it was some SQL Server site ... )

create a dummy table in Oracle

write a trigger on update of the table which calls the proc ...

insert a row into the dummy table

when ever you need to call the proc perform an update on the dummy table in oracle|||thanks for your reply...but i need to do it this way only...i can not write any trigger on the dummy table because the remote oracle server doesn't allow me to do this...|||Try openquery

Refer this link
http://www.dbforums.com/t440123.html|||how could i call remote stored procedure using openquery....? could u plz write down the statement for doing so?|||Sorry I brought the wrong information. Please check out this link instead

http://www.winnetmag.com/SQLServer/Article/ArticleID/22268/22268.html

Maybe this is the link that Enigma was talking about!|||thanx for the reply....could u plz tell me whether is it possible or not to call remote stored procedure using CALL (odbc API) API?|||Well ... thats not exactly the link I was talking about ... but that's almost the same ...
I have faced this problem before ... searched around a lot ... and found this to be the only solution posted on the net ... if you find otherwise ... do inform me about it by posting it here ...