[ http://jira.jboss.com/jira/browse/JBAS-384?page=history ]
Scott M Stark closed JBAS-384:
------------------------------
Resolution: Out of Date
The jca layer has been significatly updated since the 3.0.3 release.
> Memory leak in database access
> ------------------------------
>
> Key: JBAS-384
> URL: http://jira.jboss.com/jira/browse/JBAS-384
> Project: JBoss Application Server
> Type: Bug
> Reporter: SourceForge User
> Assignee: Scott M Stark
>
>
> SourceForge Submitter: jstolze .
> Hello, I've discovered a memory leak in the Database
> access part of JBoss. I have performed the following test.
> 1. Request a database connection from the initial
> context.
> 2. Inserted, selected and deleted a record in a MSSQL
> Server database via JDBC.
> 3. close the connection.
> 4 repeat endlessly.
> After about 3 million repetitions an OutOfMemoryError
> occurs.
> I've started JBoss with a minimum and maximum heap
> size of 20 MB. This means that JBoss had 5 MB op
> heapspace free to perform the above test. I've measured
> this by requesting the freeMemory on the VM.
> I can exclude the MS SQLServer JDBC driver, because I
> have tested it in a seperate java program that does the
> exact same with the only difference that it doesn't use
> connection pooling. No memory leak appeared then.
> Another test I've performed is like the above, but I've only
> requested a database connection once from the inital
> context, no memory leak appeared. So I think it is in the
> connection pooling part of JBoss.
> Config props are:
> JBoss 3.0.3
> JDK: Java(TM) 2 Runtime Environment, Standard Edition
> (build 1.3.1_03-b03)
> Java HotSpot(TM) Client VM (build 1.3.1_03-b03, mixed
> mode)
> Platfrom: Windows 2000.
> JDBC Driver: MS SQL-Server JDBC driver
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