BPELPM: Cannot find/lookup WSDL at runtime

Another famous one, we see from time to time..
Here is the usecase:
a) a new process is created, that has a partnerlink to another service
b) at designtime everything compiles fine (which means dependency resolution worked)
and at runtime, the famous cannot find/read wsdl error appears.

If you encounter this, check your proxy settings, they might be an issue.
where?

a) if you use the developer's edition, start_orabpel.bat/sh ($BPEL_HOME/bin) is the place to go
b) in case of a midtier install go to $AS_HOME/opmn/conf/opmn.xml and search for the
OC4J_BPEL entry.

Having questions? Feedback me on this entry BPEL Proxy Issue