RE: openjms server outofMemory

There are several issues here, each of which depend on how you are using
the server.
 
The garbage collector is described here:
http://openjms.sourceforge.net/config/gc.html.
 
If you are publishing NON_PERSISTENT messages and consumers aren't
acknowledging
messages fast enough,  then the server can run out of memory. This can be
alleviated
by setting a time-to-live value on the messages, so they expire.
 
If you are using the JDBM database (ie. openjms.db) , memory can run out
very quickly. 
In 0.7.6.x, there is also a bug: if you are publishing PERISTENT messages to
a topic and 
consuming them using non-durable topic subscribers, then they aren't removed
from the
database. See http://sourceforge.net/tracker/index.php?func=detail
<http://sourceforge.net/tracker/index.php?func=detail&aid=1165743&group_id=5
4559&atid=474136> &aid=1165743&group_id=54559&atid=474136
The JDBM has some fairly major limitations, and is not supported in the next
(0.7.7) release.
 
-Tim
 

-----Original Message-----
From: openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
[mailto:openjms-user-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of qiang zhou
Sent: Monday, 2 May 2005 11:07 PM
To: [email protected]
Subject: Re: [openjms-user] openjms server outofMemory


Hi:
  I have same problem. When you change the db conf ,then resoleve this
problem? Another, my openjms's db file alaways more then 1G or more. How can
i clear it and reduce that file fat and fat ?

jun liu <[email protected]> wrote:

Hello
My openjms server enviroment:RedHat7.0 
,openjms7.6(rmi,localhost,oracle9i),It runs well ,but server prints 
outofMemory every 48 hours,so we must restart it.I think it is caused by 
gc? any help is appricated!
setenv.sh设置如下:
JAVA_OPTS=-Xmx512m
openjms.xml相关配置如下: 


driver="oracle.jdbc.driver.OracleDriver" 
url="jdbc:oracle:thin:@hs-bossdb:1521:hsboss" 
user="bossv2_jms" 
password="bossv2jms2hurray"
maxActive="10"
maxIdle="5"
evictionInterval="3600"
testQuery="select sysdate from dual"/>


lowWaterThreshold="35"
garbageCollectionInterval="400"
garbageCollectionThreadPriority="5"/>

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