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Important notes on upgrading

Java 8 (1.8) is the recommended version of Java for running Mercury 5.2. Java 9 introduces the Java Platform Module System (JPMS), a new architectural design to which the tool has not yet been ported. We deliver Mercury 5.2 with the appropriate Java SE runtime environment (JRE) for Windows and *NIX systems.  We also release the tool without the JRE, which is suitable for other environments. If you want to download Mercury without the JRE, you can find the recommended JRE at https://www.oracle.com/at/java/technologies/javase/javase8u211-later-archive-downloads.html (Java SE Runtime Environment 8u321 section).

Due to structural changes in Mercury to support the new enhancements, models created in previous versions of the tool are not compatible with this new version.