Invalid Trigger

Question

I exported my HTML DB application from development to production. When I did everything looks to be working properly. But when I go to add a new record I get this error:
ORA-04098: trigger 'PTL_APPS.BI_ACTIVITY' is invalid and failed re-validation
This is the information for the invalid trigger
Trigger Details
Schema: PTL_APPS
Trigger Name: BI_ACTIVITY
Trigger Type: BEFORE EACH ROW
Triggering Event: INSERT
Table Schema: PTL_APPS
Base Object Type: TABLE
Table Name: ACTIVITY
Column Name: (null)
Referencing Names: REFERENCING NEW AS NEW OLD AS OLD
When Clause: (null)
Status: ENABLED
Description: bi_activity before insert on activity for each row
Action Type: PL/SQL
Trigger Body
begin
for c1 in (
select ACTIVITY_SEQ.nextval next_val
from dual
) loop
:new.ACTIVITY_ID := c1.next_val;
end loop;
end;
What is the best way to fix this?

Answer 1

ORA-04098: trigger 'string.string' is invalid and failed re-validation<br>
Cause: A trigger was attempted to be retrieved for execution and was found to be invalid. This also means that compilation/authorization failed for the trigger.<br>
Action: Options are to resolve the compilation/authorization errors, disable the trigger, or drop the trigger.<br><br>
I am sure it's something simple, but I just don't see it.<br><br>
chet