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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2480) DriverManager.getConnection leaks memory when connecting to a non-existent database
Date Tue, 17 Apr 2007 16:02:15 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12489443
] 

Bryan Pendleton commented on DERBY-2480:
----------------------------------------

Hi John, thanks for the test! It works great for me: without the fix, the test fails for me
on iteration 109455, and with the fix the test passes.

If there are no other comments from other reviewers, I'll commit the fix and the
test to the trunk later this week.


> DriverManager.getConnection leaks memory when connecting to a non-existent database
> -----------------------------------------------------------------------------------
>
>                 Key: DERBY-2480
>                 URL: https://issues.apache.org/jira/browse/DERBY-2480
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1, 10.2.1.6, 10.2.2.0,
10.3.0.0
>         Environment: Windows Vista, JDK 1.4.2_13
> Solaris 10, Sun JDK 1.4.2, 1.5.0 & 1.6.0
> Red Hat Enterprise Linux 4 (2.6.9-34.ELsmp_64), Sun JDK 1.5.0 & 1.6.0
>            Reporter: Jeff Clary
>         Assigned To: John H. Embretsen
>            Priority: Minor
>         Attachments: d2480-junitTest_v1.diff, d2480-junitTest_v1.stat, DERBY-2480-1.diff,
derbyall_report.txt, heap-server-Xmx32m.png, Patch_DERBY-1947_and_DERBY-2480.diff, testOpenOfMissingDatabase.java
>
>
> Repeated calls to java.sql.DriverManager.getConnection("jdbc:derby:C:\\DOES_NOT_EXIST")
leak memory and eventually lead to an OutOfMemoryError.
> This bug is similar to DERBY-1947 in that ContextManager objects are not getting removed
from the HashSet.  The attached test program demonstrates the issue.  When run with VM options
-Xms8m -Xmx8m, it throws an OutOfMemoryError after 19022 calls to DriverManager.getConnection.

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