MSDTC Unavailable

Hi
I have a server running Windows 2000 SP4 (PROD_COM1) running an EXE which
calls a COM+ component which in turn calls another COM+ component ( data
access module) which in turn calls a stored procedure on another machine
CANPAD001 (Win2K3 SP1) but the query fails each time with a message 'MSDTC o
n
server 'CANPAD001' is unavailable'. I've checked and MSDTC is started on bot
h
PROD_COM1 and CANPAD001. I've used the testing tool DTCPing and it works ok
in both directions. DTCtester fails with the same message as above. On the
Win2K3 machine (CANPAD001) I've set the MSDTC setting in component services
to "allow inbound" and "allow outound" and "no authentication required". I'v
e
run a BEGIN DISTRIBUTED Query in Query analyser from PROD_COM1 (using the sa
account) to CANPAD001 but again it gives the same error.
Is this perhaps a Win2K to Win2K3 MSDTC configuration error?
Any help would be much appreciated
RonanI forgot to mention there is no firewall on either machine and all the ports
are open.
I can ping CANPAD001 from PROD_COM1 so that means WINS/DNS works ok.
Ronan
"Ronan" wrote:

> Hi
> I have a server running Windows 2000 SP4 (PROD_COM1) running an EXE which
> calls a COM+ component which in turn calls another COM+ component ( data
> access module) which in turn calls a stored procedure on another machine
> CANPAD001 (Win2K3 SP1) but the query fails each time with a message 'MSDTC
on
> server 'CANPAD001' is unavailable'. I've checked and MSDTC is started on b
oth
> PROD_COM1 and CANPAD001. I've used the testing tool DTCPing and it works o
k
> in both directions. DTCtester fails with the same message as above. On th
e
> Win2K3 machine (CANPAD001) I've set the MSDTC setting in component service
s
> to "allow inbound" and "allow outound" and "no authentication required". I
've
> run a BEGIN DISTRIBUTED Query in Query analyser from PROD_COM1 (using the
sa
> account) to CANPAD001 but again it gives the same error.
> Is this perhaps a Win2K to Win2K3 MSDTC configuration error?
> Any help would be much appreciated
> --
> Ronan|||Also in the SQL Server logs for CANPAD001 I have the following message.
CANPAD001 is not part of a a cluster.
"Failed to obtain TransactionDispenserInterface: Result Code = 0x8004d01b"
Ronan
"Ronan" wrote:
[vbcol=seagreen]
> I forgot to mention there is no firewall on either machine and all the por
ts
> are open.
> I can ping CANPAD001 from PROD_COM1 so that means WINS/DNS works ok.
>
> --
> Ronan
>
> "Ronan" wrote:
>