oracle trigger 范了一个巨大的错误 递归了

CREATE OR REPLACE TRIGGER UPT_PARENTFUN
AFTER UPDATE
ON DAPS.UT_ROLEFUNC
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
DECLARE
   v_parentid varchar2(50);
   v_count number;
BEGIN
    if :new.isactive != ld.isactive then    -- 如果修改了isactive
   
        if to_number(:new.isactive) = 1  then
        -- 如果修改功能为有权限，判断父菜单是否有权限，如果没有改为有
            select f.parentid into v_parentid from ut_funcitem f where f.id = :new.funcid;
 
                --if(v_count < 1) then
                    update Ut_Rolefunc r set r.isactive = 1
                    where r.roleid = :new.roleid and r.funcid = v_parentid ;
                    ----错误----
                --end if;
            end if;
     end if; 
END;