Bug 173039 Exception is shown when accessing a db on an unknown host
Create a report Add a datasource and specified a invalid host name Click on test connection An oversized error dialog appears showing a stack trace Expected: a simple error such as "Host xxx is not accessible" should be displayed instead.
data/org.eclipse.birt.report.data.oda.jdbc/src/org/eclipse/birt/report/data/oda/jdbc/JDBCDriverManager.java
private void closeConnection( Connection conn )
    {
        if ( conn == null )
            return;     
        
        try
        {
            conn.close();
        }
        catch( SQLException e )
        { 
             
        }    
    }
    
	private boolean isExpectedDriver( Driver driver, String className )
	{
		String actual;
		if ( driver instanceof WrappedDriver )
			actual = driver.toString();
		else
			actual = driver.getClass( ).getName( );
		return isExpectedDriverClass( actual, className); 
	}
	
	private boolean isExpectedDriverClass( String actual, String expected)
	{