Can somebody shed some light on the finer points of IBM JVMs?

With a Tomcat server running on a V7R2M0 box,

WRKJVMJOB on the server job returns
JDK . . . . . . : 1.8.0_221
Bits . . . . . . : 64

Tomcat's "Manager" context shows:
JVM Version: 8.0.5.40 - pap6480sr5fp40-20190807_01(SR5 FP40)
JVM Vendor: IBM Corporation

And /QOpenSys/QIBM/ProdData/JavaVM/jdk80/64bit/copyright shows:
Licensed material - Property of IBM. IBM(R) SDK, Java(TM) Technology Edition, Version 8 IBM(R) Runtime Environment, Java(TM) Technology Edition, Version 8
Copyright 1992, 2019, Oracle and/or its affiliates. Copyright IBM Corporation, 1998, 2019. The Apache Software License, Version 1.1 and Version 2.0 Copyright 1999-2007 The Apache Software Foundation. Other copyright acknowledgements can be found in the Notices file.
Java and all Java-based trademarks and logos are trademarks or registered trademarks of Oracle and/or its affiliates. US Govt Users Restricted Rights - Use duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.

My Tomcat webapp developer looked at what WRKJVMJOB returns, and seems to think that the JVM is Open Java, rather than IBM Java.

Which leaves me scratching my head. Can somebody relieve my confusion?

--
JHHL

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