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Date: Fri, 14 Aug 2009 13:49:14 -0700 (PDT)
From: "Kathey Marsden (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Updated: (DERBY-4352) With 10.5 client and 10.1 server
 NullPointerException attempting to execute closed cursor
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     [ https://issues.apache.org/jira/browse/DERBY-4352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kathey Marsden updated DERBY-4352:
----------------------------------

    Attachment: repro.sql

> With 10.5 client and 10.1 server NullPointerException attempting to execute closed cursor
> -----------------------------------------------------------------------------------------
>
>                 Key: DERBY-4352
>                 URL: https://issues.apache.org/jira/browse/DERBY-4352
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Client
>    Affects Versions: 10.5.3.0
>            Reporter: Kathey Marsden
>         Attachments: repro.sql
>
>
> Using 10.5 client and 10.1 server I get a NullPointerException with the following script:
> [C:/test] java -Dij.exceptionTrace=true org.apache.derby.tools.ij
> ij version 10.1
> ij> run 'repro.sql';
> ij> connect 'jdbc:derby://localhost:1527/wombat;create=true';
> Connection number: 3.
> ij> drop table t1;
> 0 rows inserted/updated/deleted
> ij> create table t1 (c1 int);
> 0 rows inserted/updated/deleted
> ij> insert into t1 (c1) values (1),(2),(3);
> 3 rows inserted/updated/deleted
> ij> get cursor curs1 as 'select * from t1 for update of c1';
> ij> prepare curs1 as 'update t1 set c1=c1 where current of curs1';
> ij> next curs1;
> C1
> -----------
> 1
> ij> close curs1;
> ij> execute curs1;
> JAVA ERROR: java.lang.NullPointerException
> java.lang.NullPointerException
>         at org.apache.derby.client.am.SectionManager.getPositionedUpdateResultSet(SectionManager.java:193)
>         at org.apache.derby.client.am.PreparedStatement.flowExecute(PreparedStatement.java:2018)
>         at org.apache.derby.client.am.PreparedStatement.executeX(PreparedStatement.java:1594)
>         at org.apache.derby.client.am.PreparedStatement.execute(PreparedStatement.java:1579)
>         at org.apache.derby.impl.tools.ij.ij.ExecuteStatement(Unknown Source)
>         at org.apache.derby.impl.tools.ij.ij.ijStatement(Unknown Source)
>         at org.apache.derby.impl.tools.ij.utilMain.go(Unknown Source)
>         at org.apache.derby.impl.tools.ij.Main.go(Unknown Source)
>         at org.apache.derby.impl.tools.ij.Main.mainCore(Unknown Source)
>         at org.apache.derby.impl.tools.ij.Main14.main(Unknown Source)
>         at org.apache.derby.tools.ij.main(Unknown Source)
> I used the following script to set up my environment.
> export JAVA_HOME=C:/p4/marsden_trunk/ibm15
> export PATH="$JAVA_HOME/bin;$PATH"
> export JUNIT="C:/svn/tools/junit.jar"
> export ORO="C:/svn/tools/jakarta-oro-2.0.8.jar"
> export TEN5JARS=C:/kmarsden/projects/10.5.3testing/db-derby-10.5.3.0-lib-debug/lib
> export TEN1JARS=c:/kmarsden/svnreleases/jars/10.1.3.1
> export CLASSPATH=".;$JUNIT;$ORO;$TEN1JARS/derby.jar;$TEN1JARS/derbynet.jar;$TEN1JARS/derbytools.jar;$TEN5JARS/derbyclien
> t.jar;$TEN1JARS/derbyTesting.jar"
> java org.apache.derby.tools.sysinfo
> [C:\kmarsden\svnreleases\jars\10.1.3.1\derby.jar] 10.1.3.1 - (417277)
> [C:\kmarsden\svnreleases\jars\10.1.3.1\derbynet.jar] 10.1.3.1 - (417277)
> [C:\kmarsden\svnreleases\jars\10.1.3.1\derbytools.jar] 10.1.3.1 - (417277)
> [C:\kmarsden\projects\10.5.3testing\db-derby-10.5.3.0-lib-debug\lib\derbyclient.jar] 10.5.3.0 - (802917)
> I actually found the failure by running derbynetclientmats in this environment and saw it in the forupdate test.

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