Is it possible to call a Stored Procedure in Worklight through the WL.Server.invokeSQLStoredProcedure API method that requires an Out parameter?
No, WL SQL adapter does not support out parameters.
Sam Nunnally
There is another way to override Worklight and call stored procedures via Java to get OUT params. See answer here IBM Worklight - How to get OUT parameter when invoking a stored procedure?
This approach can be used to get OUT parameters as well as Ref Cursors (SYS_REFCURSOR) which also are not supported.
来源：https://stackoverflow.com/questions/18024072/ibm-worklight-is-it-possible-to-call-stored-procedures-with-the-out-parameter