An Oracle userID containing the @ character; supported?

Question

Hello,
I setup a test user:
create user "TLM@FOO"
and granted connect, resource, etc.
How do I login as that user?
sqlplus "TLM@FOO" fails, thinks I'm trying to connect to the TNS service @FOO
sqlplus "TLM\@FOO" fails (thought I'd try to escape the @ sign in the Unix shell)
interestingly, once I get a failed message and get to this prompt:
ERROR:
ORA-01017: invalid username/password; logon denied
Enter user-name:
I can enter "TLM@FOO" as username and his password, and I get in.
But how do I structure the "sqlplus" command to accept a userID that contains the "@" sign?

Answer 1

SQL> create user  "TLM@FOO" identified by titi;
User created.
SQL> grant connect to  "TLM@FOO" ;
Grant succeeded.
SQL> conn  "TLM@FOO"/titi
Connected.
SQL>
E:\oracle\ora92\bin>sqlplus  "TLM@FOO"/titi@DEMO9I
SQL*Plus: Release 9.2.0.7.0 - Production on Wed Nov 2 23:36:28 2005
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
SP2-0306: Invalid option.
Usage: CONN[ECT] [logon] [AS {SYSDBA|SYSOPER}]
where <logon>  ::= <username>[<password>][@<connect_string>] | /
Enter user-name: "TLM@FOO"
Enter password:
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.7.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.7.0 - Production
SQL>Try :
E:\oracle\ora92\bin>sqlplus /nolog
SQL*Plus: Release 9.2.0.7.0 - Production on Wed Nov 2 23:42:43 2005
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
SQL> conn "TLM@FOO"/titi
Connected.
SQL>You will go in the face too many problem with this sort of username.
Good luck,
Nicolas.