Pick Activity delaying WS response causing timeout error

Question

Hi,
In my BPEL process, I am invoking a Webservice through partnerlink. After the invoke activity i am assigning some message to the output variable. It is working fine.
Now, i want to display a custom message on WS response time out. In order to achieve this, I added a *'Pick Activity' after the 'Invoke Activity'*. Now, the same WS response is timing out at around 45 sec. So, If I add a timer of 30 sec, it shows my custom message of request timed out and if i change the timer time out to 1 min, then it shows system error message, as below
<Faulthttp://schemas.xmlsoap.org/soap/envelope/>
<faultcode>env:Server</faultcode>
<faultstring>com.oracle.bpel.client.delivery.ReceiveTimeOutException: Waiting for response has timed out. The conversation id is d992ed601d021346:666c57cb:129822499b8:-7f8e. Please check the process instance for detail.</faultstring>
</Fault>
So, I am not able to understand that why Webservice response is timing out on adding pick activity after invoking webservice.
Below is the code snippet.
<invoke name="Invoke_MathResultWS"
partnerLink="MathResultWS"
portType="ns1:MathResultWS" operation="division"
inputVariable="Invoke_MathResultWS_division_InputVariable"
outputVariable="Invoke_MathResultWS_division_OutputVariable"/>
<pick name="Pick_1">
<onMessage portType="client:Pooja_MathBPEL2"
operation="process"
variable="OnMessage_process_InputVar"
partnerLink="client">
<assign name="Assign_Vars">
<copy>
<from variable="Invoke_MathResultWS_division_OutputVariable"
part="parameters"
query="/ns2:divisionResponseElement/ns2:result/ns2:output"/>
<to variable="outputVariable" part="payload"
query="/client:Pooja_MathBPEL2ProcessResponse/client:Result"/>
</copy>
<copy>
<from variable="Invoke_MathResultWS_division_OutputVariable"
part="parameters"
query="/ns2:divisionResponseElement/ns2:result/ns2:messg"/>
<to variable="outputVariable" part="payload"
query="/client:Pooja_MathBPEL2ProcessResponse/client:Message"/>
</copy>
</assign>
</onMessage>
<onAlarm for="'PT1M'">
<assign name="Assign_TimeOut">
<copy>
<from expression='"WebService Response TimeOut"'/>
<to variable="outputVariable" part="payload"
query="/client:Pooja_MathBPEL2ProcessResponse/client:Message"/>
</copy>
<copy>
<from expression='number("0")'/>
<to variable="outputVariable" part="payload"
query="/client:Pooja_MathBPEL2ProcessResponse/client:Result"/>
</copy>
</assign>
</onAlarm>
</pick>
</sequence>
</otherwise>
</switch>
</sequence>
Note: I am working on SOA 10g

Answer 1

Hi Shanmu,
I couldn't understand what you mean by saying "Pick activity would add an additional operation to the BPEL wsdl and to proceed further, that operation would need to receive data."
As far as I understand the use of pick activity, it has a onMessage branch which contains the code for receiving a reply and a onAlarm branch which contains the code for a timeout. So, I think it can be used to check webservice response time out if the ws doesn't return response in some specified duration of time.
Moreover, can you pls elaborate on how can I catch the remoteFault, coz in exception handling, what i have tried so far is throwing a custom exception from a scope when some condition is not met and catching it. So, it would be helpful if you can refer me a link to some example on catching a remoteFault.