Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator>Exp disdeva/disa123@distesta file=D:\DAI
LY_BACKUP\distesta.dmp log=D:\DAILY_BACKUP\distesta.log statistics=none buffer=5
000000 owner=distesta

Export: Release 10.2.0.3.0 - Production on Thu Dec 6 15:06:21 2012

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


Connected to: Oracle Database 10g Release 10.2.0.3.0 - Production
Export done in WE8MSWIN1252 character set and AL16UTF16 NCHAR character set
server uses AL32UTF8 character set (possible charset conversion)

About to export specified users ...
EXP-00010: DISTESTA is not a valid username
Export terminated successfully with warnings.

C:\Documents and Settings\Administrator>

SQL> conn disdeva/disa123@distesta
Connected.
SQL>