Script to Delete more than 1 user from the database

Question

Hi All,
I have a list of users in a file and i want to write a script to delete all these
users from my database.
I have tried deleting users using:
drop user user1,user2,user3..... but it doesn't seem to work.
Can anyone suggest how do i read the users from the file and delete them one by one

Answer 1

You can use an external table :
SYS@db102 SQL> select username from all_users
  2  where username like 'USER%';
USERNAME
USER1
USER2
USER3
SYS@db102 SQL> !cat users_to_drop.txt
USER1
USER2
USER3
SYS@db102 SQL> create table test.users_to_drop
  2  (
  3     userx   char(30)
  4  )
  5    organization external
  6  ( type oracle_loader
  7    default directory work
  8    access parameters
  9     ( records delimited by newline
10     )
11     location ('users_to_drop.txt')
12  )
SYS@db102 SQL> /
Table created.
SYS@db102 SQL> begin
  2     for U in (select userx from test.users_to_drop) loop
  3             dbms_output.put_line('Dropping '||U.userx);
  4             execute immediate 'drop user '||U.userx||' cascade';
  5     end loop;
  6  end;
SYS@db102 SQL> /
Dropping USER1
Dropping USER2
Dropping USER3
PL/SQL procedure successfully completed.
SYS@db102 SQL> select username from all_users
  2  where username like 'USER%';
no rows selected
SYS@db102 SQL>