code: protected void initializeJdbcConnection(Connection con, JdbcConnectionDescriptor jcd)
              throws LookupException
      {
          try
          {
              PlatformFactory.getPlatformFor(jcd).initializeJdbcConnection(jcd, con);
          }
          catch (PlatformException e)
          {
              throw new LookupException("Platform dependent initialization of connection failed", e);
          }
      }
docs: Initialize the connection with the specified properties in OJB
  configuration files and platform depended properties.
  Invoke this method after a NEW connection is created, not if re-using from pool.
  
  @see org.apache.ojb.broker.platforms.PlatformFactory
  @see org.apache.ojb.broker.platforms.Platform