ConcurrentModificationException in ConnectionPool
-------------------------------------------------

                 Key: GEOT-1149
                 URL: http://jira.codehaus.org/browse/GEOT-1149
             Project: GeoTools
          Issue Type: Bug
          Components: data jdbc
    Affects Versions: 2.2.2
         Environment: UDIG 1.1 - multiple layers rendering features from Oracle 
- for each layer Connection is allocated from ConnectionPool (because of 
AUTO_COMMIT transaction) to open a FeatureReader, etc. 
            Reporter: Vitali Diatchkov


Caused by: java.util.ConcurrentModificationException
        at 
java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:617)
        at java.util.LinkedList$ListItr.next(LinkedList.java:552)
        at 
org.geotools.data.jdbc.ConnectionPool.getInUseManagedPooledConnection(ConnectionPool.java:150)
        at 
org.geotools.data.jdbc.ConnectionPool.access$200(ConnectionPool.java:46)
        at 
org.geotools.data.jdbc.ConnectionPool$ConnectionListManager.connectionClosed(ConnectionPool.java:227)
        at 
oracle.jdbc.pool.OraclePooledConnection.callListener(OraclePooledConnection.java:518)
        at 
oracle.jdbc.pool.OraclePooledConnection.logicalClose(OraclePooledConnection.java:485)
        at 
oracle.jdbc.driver.LogicalConnection.closeInternal(LogicalConnection.java:243)
        at 
oracle.jdbc.driver.LogicalConnection.close(LogicalConnection.java:214)
        at org.geotools.data.jdbc.JDBCUtils.close(JDBCUtils.java:136)
.............

During concurrent using of Connection objects from ConnectionPool.

>From first look  a ConnectionPool.getInUseManagedPooledConnection() needs 
>synchronization or has to be called inside of "synchronized (mutex) {.. } " in 
>caller's methods.


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