工作中遇到了一個問題，google了一篇，

轉載如下：

1

[CachedConnectionManager] Closing a connection for you.  Please close them yourself: [email protected]2
java.lang.Throwable: STACKTRACE
 at org.jboss.resource.connectionmanager.CachedConnectionManager.registerConnection(CachedConnectionManager.java:290)
 at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:423)
 at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:849)
 at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:89)
 at org.hibernate.connection.DatasourceConnectionProvider.getConnection(DatasourceConnectionProvider.java:69)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)
 at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
 at org.hibernate.jdbc.BorrowedConnectionProxy.invoke(BorrowedConnectionProxy.java:50)
 at $Proxy407.createStatement(Unknown Source)
 at com.eway.businessservice.util.DataUtil.queryListAsHashMap(DataUtil.java:14)
 at com.eway.persistence.dao.DepartmentDAO.findAllChildren(DepartmentDAO.java:425)
 at com.eway.businessservice.department.ejb.DepartmentManager.findAllChildren(DepartmentManager.java:358)

2

jboss自動關閉資料連線，有時會出再如上異常，連線未關閉，解決辦法

1，手動關閉每一個連線

2.首先把 D:/jboss/server/default/deploy/jboss-web.deployer/server.xml 裡的

  <Valve className="org.jboss.web.tomcat.service.jca.CachedConnectionValve"
                cachedConnectionManagerObjectName="jboss.jca:service=CachedConnectionManager"
                transactionManagerObjectName="jboss:service=TransactionManager" />

  註釋去掉

然後

   If you are using Hibernate, it is recommended to add a "hibernate.connection.release_mode" property on value "auto" (the default) in your hibernate.cfg.xml file.

This did not work for me. So I found the following workaround:
To remove the message you need to set the "Debug" property to "false" in the CachedConnectionManager mbean configuration, in the jbossjca-service.xml file, for example:
 

<mbean code="org.jboss.resource.connectionmanager.CachedConnectionManager" name="jboss.jca:service=CachedConnectionManager" >
    <depends optional-attribute-name="TransactionManagerServiceName" > jboss:service=TransactionManager</depends>
    <attribute name="Debug" > false</attribute>
  </mbean>