Are dynamic partnerlinks really dynamic

I am trying to develop dynamic partnerlinks for my BPEL process. As I understand, if I want to call one out of n number of partnerlinks say service1,service2,service3 at runtime, all having the same interface, i have to know atleast the names of these n services at designtime so that i can make an entry into the wsdl file.
Now suppose, i want to add another service (Service 4 ) with same interface , I still have to modify the wsdl file and redeploy the process.
Is there any way by which, i dont need to modify the wsdl file/redeploy the process.
Ideally i would like to maintain the name and url of all the services, externally to BPEL say a DB table or configuration file and based on my input to BPEL process would read from this configuration and call the partner service so that as and when the number of services grows, i dont need to redeploy the BPEL process.
is this achievable ?
Message was edited by:
user564313

I have been trying to get this to work with my processes.
However the examples given in BPEL sample/references/Dynamic Partner link and http://www.oracle.com/technology/pub/articles/bpel_cookbook/carey.html are using a LoanService.wsdl to create the partnerlink to which they later assign the endpoint references.
But none of the document says, how to create this LoanService.wsdl or how it is arrived at.
I have three bpel processes service1,service2,service3 having the same input schema. So their wsdl's service1.wsdl,service2.wsdl and service3.wsdl are same except the endpoint address.
Now I have another BPEL process CallXXService which will be calling either of the three services based on some input. My problem is how to create something similar to LoanService.wsdl which I can use to create the partnerlink.The three wsdl's for these services(service1.wsdl,service2.wsdl,service3.wsdl) are totally different in structure to the given LoanService.wsdl.
Any idea/suggestions please ?
anks

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