code: protected final SQLRecoverableException createClosedException(String ifc) {
          String message = AdapterUtil.getNLSMessage("OBJECT_CLOSED", ifc);
          return new SQLRecoverableException(message, "08003", 0);
      }
docs: Create an SQLRecoverableException if exception mapping is enabled, or
  SQLRecoverableException if exception mapping is disabled.
  
  @param ifc the simple interface name (such as Connection) of the closed wrapper.
  
  @return an exception indicating the object is closed.