Create username containing a special character via sqlplus

Question

I can create and use users that have a dash using Enterprise Manager. I cannot, however, using sqlplus.
SQL> create user foo-bar identified by foo;
create user foo-bar identified by foo
ERROR at line 1:
ORA-00922: missing or invalid option
If I wrap the ID in quotes it appears to work, but the user is created with the quotes in the ID:
SQL> create user "foo-bar" identified by foo;
User created.
sqlplus foo-bar/foo
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Jul 28 09:21:33 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
ERROR:
ORA-01017: invalid username/password; logon denied
With quotes, it lets me login:
Enter user-name: "foo-bar"
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
This is in contrast to users created using EM, who can login via sqlplus sans the quotes.

Answer 1

Double-quotes retain case. The default is uppercase. So, if CREATEing the USER requires double-quotes, but logging in should not, the USER should be CREATEd in uppercase:
SQL> CREATE USER "FOO-BAR" IDENTIFIED BY foo;
User created.
SQL> GRANT CREATE SESSION TO "FOO-BAR";
Grant succeeded.
SQL> CONNECT FOO-BAR
Enter password:
Connected.