Search notes:

ORA-00069: cannot acquire lock -- table locks disabled for‥

create table tq84_A(id integer primary key, txt varchar2(10));
create table tq84_B(id integer primary key, txt varchar2(10));

Prevent DDL locks (which are used when modifying the structure of a table) on tq84_B.

alter table tq84_b disable table lock;

This works ok:

drop table tq84_a;

However, trying to drop tq84_b results in ORA-00069: cannot acquire lock -- table locks disabled for TQ84_B.