BizTalk error : Unable to process exec message - biztalk

Question

I've been getting the following error in a production environment. Please refer the error in the bottom. So far I was able to recreate the problem by letting the orchestration suspend by forcing a db timeout in the application db call, and resuming the instance. After repeating the action for 2 rounds on the same instance, third time the instance will get suspended with the error below.
What could be the reason for this behavior?
BizTalk Error
Uncaught exception (see the 'inner exception' below) has suspended an
instance of service '{ORCHESTRATION
NAME}(57adc083-7423-2bff-bd2d-ca813b8c0f4e)'. The service instance
will remain suspended until administratively resumed or terminated.
If resumed the instance will continue from its last persisted state
and may re-throw the same unexpected exception. InstanceId:
1bca1f03-7780-4f45-af2e-020724c8a92d Shape name: ShapeId: Exception
thrown from: segment -1, progress -1 Inner exception: Unable to
process exec message.
Exception type: Exception Source: Microsoft.XLANGs.BizTalk.Engine Target Site: System.Object[]
get_Args() The following is a stack trace that identifies the location
where the exception occured
at Microsoft.BizTalk.XLANGs.BTXEngine.BTXService.get_Args() at
{ORCHESTRATION NAME}.segment1(StopConditions stopOn) at
Microsoft.XLANGs.Core.SegmentScheduler.RunASegment(Segment s,
StopConditions stopCond, Exception& exp)
Stack trace
xlang/s engine event log entry: Failed while delivering a message to a
service instance. Message details follow. Message ID:
61eaa7fc-ac85-42d9-bf3e-1bed258b82be Service Instance ID:
1bca1f03-7780-4f45-af2e-020724c8a92d Service Type ID:
57adc083-7423-2bff-bd2d-ca813b8c0f4e Subscription ID:
00000000-0000-0000-0000-000000000000 Body part name: Service type:
{ORCHESTRATION NAME}, {Assembly Details}
Exception type: BTXMessageDeliveryException The following is a stack
trace that identifies the location where the exception occured
at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession._receiveOneMessage(Guid&
instanceId, Guid& serviceId, IBTMessage currentMsg) at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession.ReceiveMessages(IBTMessage[]
messages, Int32 firstIdx, Int32 count) at
Microsoft.BizTalk.XLANGs.BTXEngine.AppDomains.AppDomainRoot.Microsoft.XLANGs.BizTalk.ProcessInterface.IAppDomainStub.ReceiveMessages(Object
objMsg)
Additional error information:
Failed while delivering a message to a service instance. Message details follow. Message ID:
61eaa7fc-ac85-42d9-bf3e-1bed258b82be Service Instance ID:
1bca1f03-7780-4f45-af2e-020724c8a92d Service Type ID:
57adc083-7423-2bff-bd2d-ca813b8c0f4e Subscription ID:
00000000-0000-0000-0000-000000000000 Body part name: Service type:
{ORCHESTRATION NAME}, {Assembly Details}
Exception type: BTXMessageDeliveryException Source:
Microsoft.XLANGs.BizTalk.Engine Target Site: Void
DeliverMessage(System.Guid,
Microsoft.BizTalk.Agent.Interop.IBTMessage, Boolean ByRef) The
following is a stack trace that identifies the location where the
exception occured
at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession._tryReceiveOneMessage(Boolean&
loggedError, Guid& instanceId, IBTMessage currMsg) at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession._receiveOneMessage(Guid&
instanceId, Guid& serviceId, IBTMessage currentMsg) at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession.ReceiveMessages(IBTMessage[]
messages, Int32 firstIdx, Int32 count) at
Microsoft.BizTalk.XLANGs.BTXEngine.AppDomains.AppDomainRoot.Microsoft.XLANGs.BizTalk.ProcessInterface.IAppDomainStub.ReceiveMessages(Object
objMsg)
Additional error information:
The XLANG/s message has no part at index '0'. The total number of parts found in the message is '0'. If you expect a multipart
message, check that the pipeline supports multipart messages such as
MIME.
Exception type: MissingPartException Source:
Microsoft.XLANGs.BizTalk.Engine Target Site: Void
ReadMessageState(Microsoft.XLANGs.Core.Envelope,
Microsoft.XLANGs.BaseTypes.XLANGMessage) The following is a stack
trace that identifies the location where the exception occured
at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXXlangStore.ReadMessageState(Envelope
env, XLANGMessage msg) at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXService.ArgsFromExecEnvelope(IBTMessage
msg) at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXService.DeliverMessageImpl2(Guid
subscriptionId, IBTMessage msg, Boolean& receiveCompleted) at
Microsoft.BizTalk.XLANGs.BTXEngine.BTXService.DeliverMessage(Guid
subscriptionId, IBTMessage msg, Boolean& receiveCompleted)

Answer 1

Received this myself. Not sure what you were doing when you started receiving it. For me, I had a working orchestration and then added a correlation set. I use BTDF so simply updated the GAC only with new orchestration when I really should've done a full re-deploy (I know, lazy.).
Anyway, once I did redeploy fully, cycle hosts, and retest it worked fine.
Probably not answer you are looking for but it helped me. Here was my stack trace:
Exception type: BTXMessageDeliveryException
Source: Microsoft.XLANGs.BizTalk.Engine
Target Site: Void DeliverMessage(System.Guid, Microsoft.BizTalk.Agent.Interop.IBTMessage, Boolean ByRef)
The following is a stack trace that identifies the location where the exception occured
at Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession._tryReceiveOneMessage(Boolean& loggedError, Guid& instanceId, IBTMessage currMsg)
at Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession._receiveOneMessage(Guid& instanceId, Guid& serviceId, IBTMessage currentMsg)
at Microsoft.BizTalk.XLANGs.BTXEngine.BTXSession.ReceiveMessages(IBTMessage[] messages, Int32 firstIdx, Int32 count)
at Microsoft.BizTalk.XLANGs.BTXEngine.AppDomains.AppDomainRoot.Microsoft.XLANGs.BizTalk.ProcessInterface.IAppDomainStub.ReceiveMessages(Object objMsg)
at Microsoft.XLANGs.BizTalk.CrossProcess.AppDomainStubProxy.Microsoft.XLANGs.BizTalk.ProcessInterface.IAppDomainStub.ReceiveMessages(Object msgs)
Additional error information:
Index was outside the bounds of the array.