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From "Bernt M. Johnsen (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-2084) getTransactionIsolation() in network client should not activate a transaction
Date Tue, 14 Nov 2006 12:31:38 GMT
getTransactionIsolation() in network client should not activate a transaction
-----------------------------------------------------------------------------

                 Key: DERBY-2084
                 URL: http://issues.apache.org/jira/browse/DERBY-2084
             Project: Derby
          Issue Type: Bug
          Components: Network Client
    Affects Versions: 10.2.1.6, 10.1.3.1, 10.3.0.0
            Reporter: Bernt M. Johnsen


getTransactionIsolation() is implemented by means of             
     rs = getTransactionIsolationStmt.executeQuery("values current isolation");

This will activate a transaction. Thus the code snippet

        Connection conn = 
            DriverManager.getConnection(url);
        conn.setAutoCommit(false);
        int tx = conn.getTransactionIsolation();
        conn.close();

will fail with

java.sql.SQLException: Cannot close a connection while a transaction is still active.
        at org.apache.derby.client.am.SQLExceptionFactory.getSQLException(Unknown Source)
        at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
        at org.apache.derby.client.am.Connection.closeResourcesX(Unknown Source)
        at org.apache.derby.client.am.Connection.closeX(Unknown Source)
        at org.apache.derby.client.net.NetConnection.closeX(Unknown Source)
        at org.apache.derby.client.am.Connection.close(Unknown Source)
        at org.apache.derby.client.net.NetConnection.close(Unknown Source)
        at GetTransactionIsolation.test(GetTransactionIsolation.java:12)
        at GetTransactionIsolation.main(GetTransactionIsolation.java:22)
Caused by: org.apache.derby.client.am.SqlException: Cannot close a connection while a transaction
is still active.
        at org.apache.derby.client.am.Connection.checkForTransactionInProgress(Unknown Source)
        ... 7 more



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