LPX-00245: extra data after end of document

Hi,
Oracle Version is 11.1.0.7.0
While simulating higher load on my application I am facing the following error.This error is continuously appearing on Unix Application server.Kindly let me know why this error is coming and how can i resolve it.

In line 673 of buffer:
LPX-00245: extra data after end of document

elect comp_id, version, status from DBA_registry;

COMP_ID                        VERSION                        STATUS
------------------------------ ------------------------------ --------------------------------------------
CATALOG                        11.2.0.2.0                     VALID
CATPROC                        11.2.0.2.0                     VALID

From documentation i got the following but didnot understand what it is.

LPX-00245 extra data after end of document

Cause: After the close of the top-level element, more data was found.