The mainframe Java environment must be at a recent build level of SDK 1.4.2 or later.
If you do not have a mainframe Java product, or a Java product at an earlier SDK level, you must install or upgrade to a suitable level. Follow the appropriate IBM installation instructions.
You should run with the Java 'JIT' compiler enabled. By default, this compiler is enabled and IBM recommends that it remains enabled. If you choose to disable it, there are performance implications for ReportCenter and all other Java applications.
Other Java products include IBM Developer Kit for OS/390, Java™ 2 Technology Edition, which is compliant with the Sun SDK 1.3.1 APIs. This product was usable with earlier versions of ReportCenter, but cannot be used with ReportCenter r11.7 because ReportCenter r11.7 exploits features that are not present in this level of Java.
There is an older mainframe Java product called Java for OS/390, which provided SDK 1.1.8. IBM no longer supports this product and ReportCenter cannot use it.
The HPC (High Performance Compiler) for Java product is also unsuitable for ReportCenter.
Many different SDK versions can coexist on the same system. If you have a product that has different SDK requirements to ReportCenter, you can install both SDKs.
To display and check your version and maintenance level of Java, enter the following command in OMVS from the …/bin directory of your installed Java product:
java -version
Note the HFS path name of your mainframe Java SDK command directory, for example, /usr/lpp/java/IBM/J1.5/bin.
Enter this directory name on your ReportCenter implementation worksheet. You will refer to it later when you configure your ReportCenter control region.