Once migrating our integrations from oracle Soa 10 g to 11g we faced issue while calling oracle APIs using Oracle apps adapter. Everything looks fine at OEBS side. Because integration from SOA 10g was still working perfect and when we try to execute migrated interface from SOA 11g fails...
We had checked the JCA settings several times. Responsibility and user were correctly assigned as the same values were working fine for 10g.
After investigating a lot we decided to debug the Apps Adapter jar file deployed on SOA 11g as it's version was different on SOA 10g. We got a solution from there as there were few SQL queries this apps adapter calls before executing the Apis and our user don't had access to query those tables.
In my next post I wi try to share the details of it.
But it's quite strange that this information or clue for such problem was not available or I was not able to find it over the Internet nor at oracle support.