使用DDL触发器禁止DDL语句的执行
create or replace trigger deny_ddl
before create or alter or drop or truncate on database
declare
l_errmsg varchar2(100):= 'You are not allowed to take this operation';
begin
if ora_sysevent = 'CREATE' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
elsif ora_sysevent = 'ALTER' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
elsif ora_sysevent = 'DROP' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
elsif ora_sysevent = 'TRUNCATE' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
end if;
exception
when no_data_found then
null;
end;
/
create or replace trigger deny_ddl
before create or alter or drop or truncate on database
declare
l_errmsg varchar2(100):= 'You are not allowed to take this operation';
begin
if ora_sysevent = 'CREATE' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
elsif ora_sysevent = 'ALTER' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
elsif ora_sysevent = 'DROP' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
elsif ora_sysevent = 'TRUNCATE' then
raise_application_error(-20001, ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' || l_errmsg);
end if;
exception
when no_data_found then
null;
end;
/
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/283894/viewspace-401658/ ，如需转载，请注明出处，否则将追究法律责任。
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