Some netizens asked the front-written trigger chapter when the table guards, if the DBA user needs to delete the table, so
Modify the trigger
CREATE OR REPLACE TRIGGER trg_dropdenybefore drop on databasebegin if (sys.login_user = 'SYS'!) - only allows the user SYS DROP table then raise_application_error (num => - 20000, msg => 'You can not delete table' || ora_dict_obj_name ( ) || '!'); Endiff;
