BizTalk error : Unable to process exec message -

i've been getting following error in production environment. please refer error in bottom. far able recreate problem letting orchestration suspend forcing db timeout in application db call, , resuming instance. after repeating action 2 rounds on same instance, third time instance suspended error below. reason behavior?

biztalk error

uncaught exception (see 'inner exception' below) has suspended instance of service '{orchestration name}(57adc083-7423-2bff-bd2d-ca813b8c0f4e)'. service instance remain suspended until administratively resumed or terminated. if resumed instance continue last persisted state , may re-throw same unexpected exception. instanceid: 1bca1f03-7780-4f45-af2e-020724c8a92d shape name: shapeid: exception thrown from: segment -1, progress -1 inner exception: unable process exec message. exception type: exception source: microsoft.xlangs.biztalk.engine target site: system.object[] get_args() following stack trace identifies location exception occured

at microsoft.biztalk.xlangs.btxengine.btxservice.get_args() @ {orchestration name}.segment1(stopconditions stopon) @ microsoft.xlangs.core.segmentscheduler.runasegment(segment s, stopconditions stopcond, exception& exp)

stack trace

xlang/s engine event log entry: failed while delivering message 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 following stack trace identifies location exception occured

at microsoft.biztalk.xlangs.btxengine.btxsession._receiveonemessage(guid& instanceid, guid& serviceid, ibtmessage currentmsg) @ microsoft.biztalk.xlangs.btxengine.btxsession.receivemessages(ibtmessage[] messages, int32 firstidx, int32 count) @ microsoft.biztalk.xlangs.btxengine.appdomains.appdomainroot.microsoft.xlangs.biztalk.processinterface.iappdomainstub.receivemessages(object objmsg)

additional error information:

    failed while delivering message 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) following stack trace identifies location exception occured

at microsoft.biztalk.xlangs.btxengine.btxsession._tryreceiveonemessage(boolean& loggederror, guid& instanceid, ibtmessage currmsg) @ microsoft.biztalk.xlangs.btxengine.btxsession._receiveonemessage(guid& instanceid, guid& serviceid, ibtmessage currentmsg) @ microsoft.biztalk.xlangs.btxengine.btxsession.receivemessages(ibtmessage[] messages, int32 firstidx, int32 count) @ microsoft.biztalk.xlangs.btxengine.appdomains.appdomainroot.microsoft.xlangs.biztalk.processinterface.iappdomainstub.receivemessages(object objmsg)

additional error information:

    xlang/s message has no part @ index '0'.  total number of parts found in message '0'. if expect multipart 

message, check pipeline supports multipart messages such mime.

exception type: missingpartexception source: microsoft.xlangs.biztalk.engine target site: void readmessagestate(microsoft.xlangs.core.envelope, microsoft.xlangs.basetypes.xlangmessage) following stack trace identifies location exception occured

at microsoft.biztalk.xlangs.btxengine.btxxlangstore.readmessagestate(envelope env, xlangmessage msg) @ microsoft.biztalk.xlangs.btxengine.btxservice.argsfromexecenvelope(ibtmessage msg) @ microsoft.biztalk.xlangs.btxengine.btxservice.delivermessageimpl2(guid subscriptionid, ibtmessage msg, boolean& receivecompleted) @ microsoft.biztalk.xlangs.btxengine.btxservice.delivermessage(guid subscriptionid, ibtmessage msg, boolean& receivecompleted)

received myself. not sure doing when started receiving it. me, had working orchestration , added correlation set. use btdf updated gac new orchestration when should've done full re-deploy (i know, lazy.).

anyway, once did redeploy fully, cycle hosts, , retest worked fine.

probably not answer looking helped me. here stack trace:

exception type: btxmessagedeliveryexception source: microsoft.xlangs.biztalk.engine target site: void delivermessage(system.guid, microsoft.biztalk.agent.interop.ibtmessage, boolean byref) following stack trace identifies location exception occured

at microsoft.biztalk.xlangs.btxengine.btxsession._tryreceiveonemessage(boolean& loggederror, guid& instanceid, ibtmessage currmsg) @ microsoft.biztalk.xlangs.btxengine.btxsession._receiveonemessage(guid& instanceid, guid& serviceid, ibtmessage currentmsg) @ microsoft.biztalk.xlangs.btxengine.btxsession.receivemessages(ibtmessage[] messages, int32 firstidx, int32 count) @ microsoft.biztalk.xlangs.btxengine.appdomains.appdomainroot.microsoft.xlangs.biztalk.processinterface.iappdomainstub.receivemessages(object objmsg) @ microsoft.xlangs.biztalk.crossprocess.appdomainstubproxy.microsoft.xlangs.biztalk.processinterface.iappdomainstub.receivemessages(object msgs)

additional error information:

    index outside bounds of array.