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https://issues.apache.org/jira/browse/DERBY-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573355#action_12573355
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Mamta A. Satoor commented on DERBY-3304:
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I haven't investigated why the isClosed() not working but using isClosed() 
makes .jdbc4/ResultSetTest.testGetHoldability() run into null pointer exception 
at line 1525. This test seems to indicate that for some reason, the dynamic 
resultset from the Java procedure has been closed hence unavailable whereas the 
test expects it to be open,

> Explicit commit inside a java procedure makes a dynamic result sets passed 
> out unavailable
> ------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3304
>                 URL: https://issues.apache.org/jira/browse/DERBY-3304
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.4.0.0
>            Reporter: Daniel John Debrunner
>            Assignee: Mamta A. Satoor
>         Attachments: Main.java
>
>
> Repro (Main.java) that shows changed behavior after svn 602991
> (the patch committed for this issue). It seems a regression: (originally from 
> Dag H. Wanvik attached to DERBY-1585)
> An explicit commit inside a stored procedure makes a dynamic result sets 
> passed out unavailable, even if the commit is executed *prior* to the result 
> set; as in the repro.

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