not true ...

Code:
[oracle@cim4 oracle]$ sqlplus "/ as sysdba"
 
SQL*Plus: Release 9.2.0.1.0 - Production on Tue Dec 9 11:48:49 2003
 
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
 
 
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning option
JServer Release 9.2.0.1.0 - Production
 
SQL> create public synonym emp_v for blah.emp;
 
Synonym created.
 
SQL> select username from dba_users;
 
USERNAME
------------------------------
SYS
SYSTEM
OUTLN
MZADMIN
DBSNMP