Error ORA-20505

Question

Hi, I am trying to use ‘Form on a table with report’ wizard. This wizard is running on view which made out of two/three different table. When I click ‘Apply Changes’ (Save) button it gives me an error “ORA-20505: Error in DML: p_rowid=42461059, p_alt_rowid=AGSNO, p_rowid2=, p_alt_rowid2=. ORA-01776: cannot modify more than one base table through a join view”
Error     Unable to process row of table ABC.
If you need to see table structure I can email it.

Answer 1

Hi Bryan,
Can you please help..I';ve been on this issue for the past 2 days and not able to rectify..
Following is my instead of update trigger.
create or replace TRIGGER "HOMEPAGEVIEW_UPDATE"
INSTEAD OF UPDATE
ON cts_homepageview
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
BEGIN
UPDATE cts_hardware_info
SET STATUS_ID = :NEW.STATUS_ID,
COMPUTER_NAME = :NEW.COMPUTER_NAME,
OPERATINGSYSTEM_ID = :NEW.OPERATINGSYSTEM_ID
WHERE COMPUTER_ID = :OLD.COMPUTER_ID;
UPDATE cts_server_administrator
SET PRIMARY_ADMIN_ID = :NEW.PRIMADMIN_ID,
SECONDARY_ADMIN_ID = :NEW.SECONDADMIN_ID
WHERE ID = :OLD.ID;
UPDATE cts_location_info
SET BUILDING_ROOM_RACK = :NEW.BUILDING_ROOM_RACK
WHERE LOCATION_ID = : OLD.LOCATION_ID;
UPDATE cts_maintenace_info
SET MAINTENANCE_WINDOW = :NEW.MAINTENANCE_WINDOW
WHERE MAINTENANCE_ID = : OLD.MAINTENANCE_ID;
END;
I have a form on the view which has primary keys from all these 4 tables and all these four tables are connected with computer_id from the first table.
When I update the data, am getting the following error.
ORA-20505: Error in DML: p_rowid=488, p_alt_rowid=COMPUTER_ID, p_rowid2=, p_alt_rowid2=. ORA-02014: cannot select FOR UPDATE from view with DISTINCT, GROUP BY, etc.
     Error     Unable to process row of table CTS_HOMEPAGEVIEW.
OK     
One thing I want to mention is when I created the form, I just selected computer_id as the primary key.Does it have to do anything with this issue?
It would be really great if you can suggest sth..
Thanks in Advance,
Shravanthi
글 수정: user0012