Drop All Tables In an Oracle Schema

Sometimes, we want to drop all tables in our schema. To do this, I create the following PL/SQL script file.

               Warning!!!!! The script below will remove all tables 
                       under the current schema!!!

begin
for r in (select table_name from user_tables order by table_name)
  loop
  begin
   execute immediate 'drop table '||r.table_name
                     ||' cascade constraints purge';
   exception when others then null;
  end;
  end loop;
end;
/

               Warning!!!!! The script above will remove all tables 
                       under the current schema!!!

I saved it as file this_will_drop_all_user_tables.sql. I logged in my schema using sqlplus and run the scripts.

$sqlplus myschema/mypassword

SQL> @this_will_drop_all_user_tables 

PL/SQL procedure successfully completed.

All the tables are removed under the current schema. Again, please be careful before run the script! It will remove all tables under the current schema.