E1: JAS: IBM Toolkit jt400.jar File Changes with iSeries version V7R1 or V7R2 (Doc ID 1087253.1)

Last updated on APRIL 18, 2025

Applies to:

Symptoms

This document offers an explanation related to changes for the jt400.jar file found in both the IBM i Access for Windows v7.1 and the IBM i v7.1 system. This document applies to V7R2 as well.

When setting up EnterpriseOne Web Development workstation or JAS Server against a DB2/400 database, it is customary to use a jt400.jar found in either IBM i Access for Windows (C:\Program Files\IBM\Client Access\jt400\lib) or from the IBM i / i5/OS server. The IBM i Access for Windows v7.1 jt400.jar is now built by Java 1.6.

Unlike past jt400.jar files the IBM i Access for Windows v7.1 jt400.jar only supports Java releases 1.6 and higher. If the IBM i Access for Windows v7.1 jt400.jar is used for WebSphere 6.1 (Java 1.5) or OAS 10.1.3.4 (Java 1.5) it will fail to work. The errors shown directly below are attributed to this type of failure:

Cause

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