getting SQL instance name in extended stored proc

I have a extended stored procedure that I have been using
for a long time and it works fine. During its normal processing
it has to go back into the calling server/database and retrieve
additonal information. We are now working with multiple named
instances of MsSQL on the same box so I do not know the instance
of the server that has called me.
I already use "srv_rpcdb" to get the "database name" but how can
I discover the "instance name" of the server that has called me
so I can properly open a ADO/ODBC connection back into the same
server/database?See srv_pfieldex,
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odssql/ods_6_ref_07_3320.asp
Inside an XP you can not retrieve the user database context, so what ever
you retrieve with srv_rpcdb it will not be correct and probably always
return master.
GertD@.SQLDev.Net
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"Dennis Passmore" <DennisP@.dpassmore.com> wrote in message
news:uTp9m7xIEHA.2596@.TK2MSFTNGP10.phx.gbl...
> I have a extended stored procedure that I have been using
> for a long time and it works fine. During its normal processing
> it has to go back into the calling server/database and retrieve
> additonal information. We are now working with multiple named
> instances of MsSQL on the same box so I do not know the instance
> of the server that has called me.
> I already use "srv_rpcdb" to get the "database name" but how can
> I discover the "instance name" of the server that has called me
> so I can properly open a ADO/ODBC connection back into the same
> server/database?
>
>