...or to back in life one old thread:
Wondering, what happened with Publish as Web Service wizard from jdev 11g:
Is there any way to do that, beside Toplink-Wizard as described here:
Not supported in 12c.
"Using Oracle JDeveloper 11g you can generate and deploy a PL/SQL Web service. JDeveloper's Create PL/SQL Web service wizard makes it easy to generate a web service from a PL/SQL package or a Java stored procedure that uses object types."
"Creating Web services out of Query, Java, DML, and Advanced Queues is not supported in this release."