Delete an oracle-user with single quotes in the username - oracle

Question

Through a faulty script I have created a user with single quotes around his username (i.e. his username is 'username', not username) on an Oracle 9i system. Now I want to remove that user. Neither "DROP USER 'username'" nor "DROP USER \'username\'" nor "DROP USER (SELECT username FROM all_users where user_id = 123)" worked. How do I get rid of that user?

Answer 1

create user "'bla'" identified by bla;
drop user "'bla'";

Answer 2

According to Oracle's Documentation...
"A quoted identifier begins and ends
with double quotation marks ("). If
you name a schema object using a
quoted identifier, then you must use
the double quotation marks whenever
you refer to that object."
So this...
DROP USER "username" CASCADE;

Answer 3

I know this is an old post, but for anyone stumbling across this as the result of a search on this problem - the issue appears to be that a database trigger is firing on drop user.
I've posted the solution I found for Oracle XE ( probably the same for other 10g releases)
here
Hope someone finds this useful,
Mike

Answer 4

Try DROP USER "'username'" or DROP USER ''username''. (Note that those last quotes are all single quotes)

Answer 5

I don't know Oracle off-hand, but might you try enclosing it in double quotes?
(I'll delete this answer if its wrong)

Answer 6

The following code might help you :
declare
sel_username varchar2(30);
r_user_id varchar2(30);
r_username varchar2(30);
user_cmd varchar2(200);
BEGIN
/*
This procedure will delete a single user_id and can be used to delete a user
with none displayable characters in the name
**Replace** the user_id in this script to that you want to delete !!
Author: Ulrich Henkenjohann - March 2010 / tested on ORACLE 10.2.0.4
*/
-- select the username for a special user_id. Ther username may contain none displayed characters
select username into sel_username from dba_users where user_id = 34;
select user_id, username into r_user_id , r_username from dba_users where username = sel_username ;
DBMS_OUTPUT.PUT_LINE('Selected user: ' || r_user_id || ' ' || r_username);
-- If a test is needed, an alter passwort command may be usefull
-- user_cmd := 'ALTER USER "' || r_username || '" IDENTIFIED BY PASSWORDX ';
-- Drop the selected user
user_cmd := 'DROP USER "' || r_username || '" CASCADE ';
DBMS_OUTPUT.PUT_LINE('Executing user_cmd: ' || user_cmd );
execute immediate user_cmd ;
END;
/

Answer 7

Once again with better format:
declare
sel_username varchar2(30);
r_user_id varchar2(30);
r_username varchar2(30);
user_cmd varchar2(200);
BEGIN
/*
This procedure will delete a single userid and can be used to delete a user
with none displayable characters in the name
**Replace the user_id in this script !!**
Author: Ulrich Henkenjohann - March 2010 / tested on ORACLE 10.2.0.4
*/
-- select the username for a special user_id. Ther username may contain none displayed characters
select username into sel_username from dba_users where user_id = 34;
select user_id, username into r_user_id , r_username from dba_users where username = sel_username ;
DBMS_OUTPUT.PUT_LINE('Selected user: ' || r_user_id || ' ' || r_username);
-- If a test is needed, an alter passwort command may be usefull
-- user_cmd := 'ALTER USER "' || r_username || '" IDENTIFIED BY PASSWORDX ';
-- Drop the selected user
user_cmd := 'DROP USER "' || r_username || '" CASCADE ';
DBMS_OUTPUT.PUT_LINE('Executing user_cmd: ' || user_cmd );
execute immediate user_cmd ;
END;
/