Step 1: Export project from 11g Service Bus Console
Step 2: Create a OSB application and import project
Step 3: Using SAP Adapter Migration Tool
Step 4: Browse and Select JNDI connection for SAP
New jca file like:
Step 5: Edit Business Service wsdl source manually
Step 6: Change jndi name.
Step 7: Clean & Build & deploy your project using Jdeveloper 12c