In these cases, I have often seen issue with the Network configuration
cause this. Most often, its a DNS server that is not working correctly,
that is causing the code to sit on timeouts...


Tim Rowe, timmr@xxxxxxxxxx
Business Architect Application Development & Systems Management for IBM i
IBM i Development Lab, Rochester, MN
(507) 253-6191 (Tie) 553-6191

----- Original message -----
From: Mark Murphy <jmarkmurphy@xxxxxxxxx>
Sent by: "JAVA400-L" <java400-l-bounces@xxxxxxxxxxxx>
To: Java Programming on and around the IBM i <java400-l@xxxxxxxxxxxx>
Subject: JDBC performance issues after moving to Java 8
Date: Fri, Jul 6, 2018 8:01 AM

We have a Java application running on IBM i v7.1. It was working fine
Java 6, but when we moved to Java 8 in preparation for an upgrade to
the program started taking over an hour to run. As far as I know, the
change was to move to Java 8. We are using the 32 bit JVM for both Java
and Java 8.

Any ideas on where to look for issues? We are not getting any errors
that I
know of, and everything is running through properly. It just takes over
hour for the program to run now when it used to take minutes. The
application is using JDBC to communicate with a MS SQL Server. It is
basically synchronizing data for another process that runs on Windows.
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