How Does Oracle Do This?

SQL*Plus: Release 10.1.0.4.0 - Production on Mon Sep 12 18:09:39 2005

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, Oracle Label Security, OLAP and Data Mining options

SQL> desc DBMS_SQLPLUS_SCRIPT
ERROR:
ORA-03117: two-task save area overflow

SQL> SELECT owner, object_type

   2 FROM dba_objects
   3 WHERE object_name = 'DBMS_SQLPLUS_SCRIPT';

OWNER                          OBJECT_TYPE
------------------------------ ----------------
SYS                            PACKAGE
SYS                            PACKAGE BODY
PUBLIC                         SYNONYM

How can they produce an ORA-03117 from a simple DESCRIBE?

-- 
Daniel A. Morgan
http://www.psoug.org
damorgan_at_x.washington.edu
(replace x with u to respond)