Script for deleting all tables in the Oracle database

oracle-empty-db.sql

BEGIN
  FOR c IN (SELECT table_name FROM user_tables)
    LOOP
      EXECUTE IMMEDIATE ('DROP TABLE "' || c.table_name || '" CASCADE CONSTRAINTS');
    END LOOP;
  EXECUTE IMMEDIATE 'PURGE RECYCLEBIN';
  FOR s IN (SELECT sequence_name FROM user_sequences)
    LOOP
      EXECUTE IMMEDIATE ('DROP SEQUENCE ' || s.sequence_name);
    END LOOP;
END;