The JRE consists of the Java Virtual Machine, the Java Core Classes, and the supporting files. The JRE is the run time part of the JDK and does not include a compiler, a debugger, or development tools. You must have the JRE if you intend to use one of the following:
OpenEdge Management or OpenEdge Explorer
WebSpeed Transaction Server
OpenEdge® Application Server Basic
OpenEdge® Application Server Enterprise
Java application or applet
OpenEdge® Adapter for SonicMQ®
Web Services Adapter
Secure AppServer Internet Adapter (AIA)
You must have the JRE to execute Java stored procedures and triggers from the database.