Problem when another user update record.

Question

Hi All,
i am using jdev 11.1.1.5.0
use case: i have create one adf table which is based on vo where a column claimed_by.
i have add a where clause in vo
where claimed_by is null.
default value of claimed_by is null. when user claimed particular record claimed_by contain id of that user.
now problem is that when two user access same vo at same time. suppose first user claimed a record with id 1 then claimed_by column of table update with 1.
but in second user window same record still show.
so i want if record already claimed by another user and second user attempt to claim same record which is already claimed in mean time. then proper error message show to user like "this record already claimed by another user".
is there possible with change indicator in claimed_by attribute or history column ?
or any other way to do this.

Answer 1

Hi Arun,
i have already read this blog. And i know about JBO-25014: Another user has changed the row with primary key oracle.jbo.Key[x]
but in my use case i don't want this exception occur that's way i have set property reset after update and insert.
but it is not work for me.
my concern is that-
when one user claimed record and set claimed_by column and after that when second user claim same record a proper error message display to user.