Upgrade from V4.5 to V5.2 Java library problem

All,


At the weekend I upgraded my 730 from OS V4.5 to V5.2 , a few problems were
unearthed such as the IP routing table needed to be rebuilt , which has now
been rectified. But I still have an outstanding problem.

We have 4 Win2k servers connected by ODBC/JDBC connections to my AS400.
These servers run an identical Java application apart from the initial
start-up program which defines which AS400 library the Java app is supposed
to use.

The Java programs are defined with a default library in case no library is
defined within the start-up script. This default library happens to be the
production library.
The production servers work, the test servers that use the override library
in the start-up program do not.

What I have found is that each server creates 4 QZDASOINIT threads on the
AS400 when the app is started, the 1st QZDASOINIT thread uses the default
library, any subsequent QZDASOINIT threads opened use the override library.
The problem being that the 1st QZDASOINIT thread is using the wrong AS400
library.

This problem never occurred at V4.5 , but does at V5.2.

Installed on the AS400 I have

Toolbox for Java V5R2
Java development kit 1.1.8

I do know that JDK1.2 , 1.3 , 1.4 exist to be installed on the AS400 but my
thoughts at the time were to keep the same JDK level as V4.5.
This may be incorrect thinking on my behalf and if I need to go to JDK1.4 on
the AS to resolve my problem then I will do so.
But I do not want to have to install the newer JDK just for the sake of it.

The client JDK on the servers is JDK1.1.5

Help would be appreciated.
I have posted this on the Java midrange forum , but so far no reply has been
forthcoming.


Regards

Steven Gray
Senior Analyst
Arval PHH

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