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https://issues.apache.org/jira/browse/DBCP-561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17434567#comment-17434567
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Gary D. Gregory commented on DBCP-561:
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[~hayashiy] Ping, we released 2.9.0 a while back.
> NullPointerException occurs
> ---------------------------
>
> Key: DBCP-561
> URL: https://issues.apache.org/jira/browse/DBCP-561
> Project: Commons DBCP
> Issue Type: Bug
> Affects Versions: 1.4
> Reporter: Yasufumi Hayashi
> Priority: Major
> Attachments: PoolingTest2.java
>
>
> The following error sometimes occurs with the attached program.
> * java.lang.NullPointerExceptionjava.lang.NullPointerException
> at
> org.apache.commons.dbcp.cpdsadapter.PooledConnectionImpl.prepareStatement(PooledConnectionImpl.java:243)
> at
> org.apache.commons.dbcp.cpdsadapter.ConnectionImpl.prepareStatement(ConnectionImpl.java:95)
> at PoolingThread2.selectSysdate(PoolingTest2.java:173)
> at PoolingThread2.run(PoolingTest2.java:147)
> * java.sql.SQLRecoverableException: クローズされた接続です。
> at
> oracle.jdbc.driver.PhysicalConnection.prepareStatementInternal(PhysicalConnection.java:1994)
> at
> oracle.jdbc.driver.PhysicalConnection.prepareStatement(PhysicalConnection.java:1960)
> at
> oracle.jdbc.driver.PhysicalConnection.prepareStatement(PhysicalConnection.java:1866)
> at
> org.apache.commons.dbcp.cpdsadapter.PooledConnectionImpl.prepareStatement(PooledConnectionImpl.java:243)
>
> at
> org.apache.commons.dbcp.cpdsadapter.ConnectionImpl.prepareStatement(ConnectionImpl.java:95)
>
> at PoolingThread2.selectSysdate(PoolingTest2.java:173)
> at PoolingThread2.run(PoolingTest2.java:147)
>
> Does not occur with dbcp 1.2.2, but occurs with dbcp 1.4.
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