MIDRANGE dot COM Mailing List Archive



Home » MIDRANGE-L » April 2014

Re: JDBC connections and library lists



fixed

If the i is closing the connection, you shouldn't see this problem.

What do you see in the joblog of the connections being used by WAS?
User WILTC from client 192.168.1.192 connected to server. Anything about
the library list changing?

Try the following test...
Start iNav Run SQL Scripts...
do WRKJOB on whatever QZDASOINIT job iNav reports as being connected to...
look at the library list of the QZDASOINIT job
in run SQL scripts, do CL: addlible somelib
now look again at the library list of the QZDASOINIT job
close run SQL scripts
look at the library list of the QZDASOINIT job again, should be back to the
original.

I don't think your REHL app is the problem. The problem is in you WAS app.
I think it's opening a connection and setting the library list and you're
not expecting it to be.

Charles


On Wed, Apr 2, 2014 at 2:00 PM, Chris Bipes <chris.bipes@xxxxxxxxxxxxxxx>wrote:

We are running V6R1. I am thinking that because the connection pool is
created when Tomcat starts and not used for days, the iSeries is closing
the connection. As the programmer has pointed out to me, (cause it ain't
his problem) that the application ran fine for 14 months. (Bull) Over the
weekend we introduced the WAS server application into production. That is
when the land mines started being stepped on. There has to be some reason
the RHEL Tomcat server is not holding the connection pool open. If the
programmer will get off of his high horse and send me his configurations, I
will share with you.

Here is what I have so far:
Apache's connection pool library: org.apache.commons.dbcp.BasicDataSource
I don't use a "toolkit". It's a JDBC driver from IBM and called:
com.ibm.as400.access.AS400JDBCDriver.

Does this make any sense to you cause I am clueless.


Chris Bipes
Director of Information Services
CrossCheck, Inc.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:
midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles Wilt
Sent: Wednesday, April 02, 2014 10:52 AM
To: Midrange Systems Technical Discussion
Subject: Re: JDBC connections and library lists

Chris,

Again...it can't be happening that way...it just can't. The i isn't going
to allow an open connection to one box to be used by other at the TCP/IP
level let alone the JDBC level unless there's some sort of virtual
IP/clustering involved.

Do you have a network trace that proves it?

If not, what's your evidence that that the connection was started by tomcat
and picked up by WAS?

What version of IBM i?

I'm on 7.1, perhaps the library list reset that I see when a connection is
released is new and that Dan was right about it not being reset at older
versions.

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/midrange-l.







Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2014 by MIDRANGE dot COM and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available here. If you have questions about this, please contact