Interesting problem with instances
Interesting problem with instances
- Subject: Interesting problem with instances
- From: Guido Neitzer <email@hidden>
- Date: Thu, 14 Dec 2006 12:32:44 +0100
Hi.
We have an application on one of our servers, that behaves very strange.
Some instances don't load certain images from the database, other
instances do. I have compared the start parameters for the instances
and they are completely the same. They connect to the same database
(on a second server). They use the same binary application package.
They use the same JDBC driver.
Everything should be equal between the four instances but only
instance 1 and 4 are loading and displaying the images, 2 and 3 do
not display the images but show a message in the HTML:
<img src="/ERROR/NOT_FOUND/DYNAMIC_DATA">
while the "good" applications show:
<img src="/cgi-bin/WebObjects/DGA.woa/1/wr?wodata=-2671207830510638622">
I don't know whether this makes any difference: this morning we moved
the database to a different server. Before that we had everything on
one server, now we moved the db (PostgreSQL 8.2 vs. PostgreSQL 8.1.5)
on a newer version on the new server. The new server is an Intel
Xserve which should replace the old server completely and we started
by moving the database. The test application should no problems so we
moved the production database to the new server.
The database on the old server is off, so there is no way of getting
the data from somewhere else but the new server.
Interesting enough, other images are displayed without any problem on
the "bad" instances. Only some special images - and I currently can't
see what's special about that. This is another images fetched from
the bad instance:
<img src="/cgi-bin/WebObjects/DGA.woa/3/wr?
wodata=-6078072308583640953"></img>
So, there is no problem for the instance connecting to the images
database and getting content from there.
I have absolutely no idea what happens there.
Any idea about that? Any hint where I can look? Btw: I don't get
errors from that in the log.
cug
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