MSDTC Unavailable Windows 2003

Hi
I have a VB6 windows app which calls a VB6 COM+ application (both running on
machine CHOPGBCOM001) which in turn calls a stored procedure on a remote
machine CANSUR001 but it keeps failing with error "MSDTC on server
'CANSUR001' is unavailable". The COM+ application is configured with
Transaction Support=Required and isolation level set to the default of
serialised (the COM+
app changes it to Read Committed)
* CHOPCOM001 and CANSUR001 both have Windows 2003 SP1 and CANSUR001
is running SQL Server 2000.
* MSDTC is started on both machines
* I have Installed/enabled windows components "Enable network COM+ access"
and "Enable network DTC access" on both machines
* I have configured MSDTC in Component services to use "Network DTC access",
allow outbound and inbound on "Transaction Manager Communication" and set
to "No authentication required"
* Both machines are in the same domain
* No local firewalls are installed
* I've rebooted both machines but same result
* CANSUR001 is NOT part of a cluster
* I've tried running
BEGIN distributed transaction
select * from cansur001.leisure.dbo.member
from SQL Analyser in CHOPCOM001 but get the same result
Any help would be gratefully received
God Bless
RonanMSDTC is turned off by default in Windows 2003. Have you enabled it in
Windows?
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"Ronan" <Ronan@.discussions.microsoft.com> wrote in message
news:F77ECB86-A5E1-42CC-9D02-51CEBFDED779@.microsoft.com...
> Hi
> I have a VB6 windows app which calls a VB6 COM+ application (both running
> on
> machine CHOPGBCOM001) which in turn calls a stored procedure on a remote
> machine CANSUR001 but it keeps failing with error "MSDTC on server
> 'CANSUR001' is unavailable". The COM+ application is configured with
> Transaction Support=Required and isolation level set to the default of
> serialised (the COM+
> app changes it to Read Committed)
>
> * CHOPCOM001 and CANSUR001 both have Windows 2003 SP1 and CANSUR001
> is running SQL Server 2000.
> * MSDTC is started on both machines
> * I have Installed/enabled windows components "Enable network COM+ access"
> and "Enable network DTC access" on both machines
> * I have configured MSDTC in Component services to use "Network DTC
> access",
> allow outbound and inbound on "Transaction Manager Communication" and
> set
> to "No authentication required"
> * Both machines are in the same domain
> * No local firewalls are installed
> * I've rebooted both machines but same result
> * CANSUR001 is NOT part of a cluster
> * I've tried running
> BEGIN distributed transaction
> select * from cansur001.leisure.dbo.member
> from SQL Analyser in CHOPCOM001 but get the same result
>
> Any help would be gratefully received
> God Bless
> Ronan|||Distributed Transaction Coordinator service is enabled and started on both
machines
--
Ronan
"Ronan" wrote:

> Hi
> I have a VB6 windows app which calls a VB6 COM+ application (both running
on
> machine CHOPGBCOM001) which in turn calls a stored procedure on a remote
> machine CANSUR001 but it keeps failing with error "MSDTC on server
> 'CANSUR001' is unavailable". The COM+ application is configured with
> Transaction Support=Required and isolation level set to the default of
> serialised (the COM+
> app changes it to Read Committed)
>
> * CHOPCOM001 and CANSUR001 both have Windows 2003 SP1 and CANSUR001
> is running SQL Server 2000.
> * MSDTC is started on both machines
> * I have Installed/enabled windows components "Enable network COM+ access"
> and "Enable network DTC access" on both machines
> * I have configured MSDTC in Component services to use "Network DTC access
",
> allow outbound and inbound on "Transaction Manager Communication" and s
et
> to "No authentication required"
> * Both machines are in the same domain
> * No local firewalls are installed
> * I've rebooted both machines but same result
> * CANSUR001 is NOT part of a cluster
> * I've tried running
> BEGIN distributed transaction
> select * from cansur001.leisure.dbo.member
> from SQL Analyser in CHOPCOM001 but get the same result
>
> Any help would be gratefully received
> God Bless
> Ronan|||One thing I forgot to mention is that the remote server CANSUR001 is a
Domain Contoller, anyone come across problems running distributed
transactions against
servers which are also doiman controllers?
Ronan
"Ronan" wrote:
> Distributed Transaction Coordinator service is enabled and started on both
> machines
> --
> Ronan
>
> "Ronan" wrote:
>