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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4794) NPE at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.finishAndRTS
Date Wed, 08 Sep 2010 07:41:32 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12907122#action_12907122
] 

Knut Anders Hatlen commented on DERBY-4794:
-------------------------------------------

The code in question has been changed since version 10.3.1.4, so it would be interesting if
you could try a later version (I'd suggest 10.6.1.0) and see if it's still a problem. I remember
that we fixed some problems where derby.language.logQueryPlan caused NPE on close a couple
releases ago.

> NPE at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.finishAndRTS 
> ------------------------------------------------------------------------------
>
>                 Key: DERBY-4794
>                 URL: https://issues.apache.org/jira/browse/DERBY-4794
>             Project: Derby
>          Issue Type: Bug
>          Components: Miscellaneous
>         Environment: Derby version info -- as seen in MANIFEST.MF
> Manifest-Version: 1.0
> Ant-Version: Apache Ant 1.6.5
> Created-By: 1.4.2_12-b03 (Sun Microsystems Inc.)
> Bundle-Vendor: Apache Software Foundation
> Bundle-Name: Apache Derby 10.3
> Bundle-Version: 10.3.1000004.561794
> Sealed: true
>            Reporter: Manoranjan Sahu
>
> Derby is throwing NPE randomly while executing simple sql statements. 
> Stack trace in derby.log
> Caused by: java.sql.SQLException: Java exception: ': java.lang.NullPointerException'.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeQuery(Unknown Source)
> 	at oracle.toplink.essentials.internal.databaseaccess.DatabaseAccessor.executeSelect(DatabaseAccessor.java:726)
> 	at oracle.toplink.essentials.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:501)
> 	... 58 more
> Caused by: java.sql.SQLException: Java exception: ': java.lang.NullPointerException'.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown
Source)
> 	... 70 more
> Caused by: java.lang.NullPointerException
> 	at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.finishAndRTS(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.finish(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.BaseActivation.close(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericActivationHolder.execute(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	... 63 more
> It is noticed that this issue is happening randomly , during selects and inserts. I did
not find any quick reproduction steps for it.

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