Java Client SDK - calling Pipeline Pilot protocols from Oracle

Folks,

I'm interested in calling a pipeline pilot protocol from an Oracle stored procedure.

The Pipeline Pilot developers help has a discussion under:

     Dev > Client-side Integration > Java Client SDK > Java Client SDK Overview

It has a section on how to load java classes using the loadjava utility, which I'm comfortable with and have working.

There is also a useful example to implement a synchronous client based on classes in the com.scitegic.proxy package (jalpp.jar):

     Dev > Client-side Integration > Java Client SDK > Java Client Example Applications

Again, I'm comfortable with this and I'm able to call this from my IDE.

I get the following error when I attempt to run this class from Oracle:

ERROR at line 1:

ORA-29532: Java call terminated by uncaught Java exception:

java.lang.UnsupportedClassVersionError:

com/scitegic/proxy/PipelinePilotException (Unsupported major.minor version 50.0)

Looking closely at the Pipeline Pilot jars I can see that they were compiled with Java 6 but my Oracle JDK (latest available 11G R2 standard edition) is at Java 5, see: http://docs.oracle.com/cd/E11882_01/appdev.112/e25518/adfns_environments.htm#ADFNS654

So I'm left with the following option to implement my own web service client to submit PP jobs and retrieve results, which is a bit of a shame because the com.scitegic.proxy classes appear to do exacly what I need.

Does anybody know if the above classes come in a Java 5 flavour...and if so, are they supported by Accelrys?

Cheers,

Jim