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WebLogic OS/390 Platform Support

Latest Certified Release

The latest certified release is WebLogic Server Release 4.5.1. For more information, see Platform certification detail. Platform certification for WebLogic Server Release 5.1 is still in progress. Please contact your account manager for more information.

General Information

You can download the latest JDK from the S/390 Java page.

For general information about S/390, OS/390, and USS/390, see IBM's S/390 website.


Install WebLogic Server on OS/390 using the WebLogic .zip archive distribution. Follow the instructions in Installing from a zip archive.

Important  After you install WebLogic Server on OS/390, you must run the USS390PostInst utility, which is in the util390.jar file, to convert text files from ASCII to EBCDIC encoding. It is only necessary to do this one time after you install.

Follow these steps:

  1. Copy the util390.jar file into your WebLogic home directory.

  2. Add util390.jar to your CLASSPATH environment variable:
      $ CLASSPATH=<WebLogic home directory path>/util390.jar:$CLASSPATH; export $CLASSPATH

  3. Run the USS390PostInst utility:
      $ java USS390PostInst

USS390PostInst prints a message as it converts each text file in the WebLogic distribution.

Notes on using WebLogic Server with OS/390

  • WebLogic Server 4.5.1 on OS/390 requires sp5 or greater.

  • Graphical utilities, such as the WebLogic Console, must be executed on a client computer, since USS390 does not have a GUI environment.

  • No native libraries are provided for OS/390.

  • WebLogic Server was certified using the WebLogic jdbcKona/MSSQLServer4 JDBC driver with Microsoft SQL Server. (Please note that starting with WebLogic Server Release 5.1, jdbcKona/MSSQLServer4 is known as the WebLogic jDriver for Microsoft SQL Server.)


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