Forms Hang on saving a record.

Dear All Experts,
We have OAS 10g 10.1.2.0.2 and Orcle DB 9i on seprated win server 2003.
A couple of users suddenly face a Forms Hang problem while they try to save the record. it's not occuring on all time but when it occurs they have to re-login.
On the login again it works filne.
Would you please guide us to resolve this problem.
Thanks & Regards
Eidy

Thats a little complicated.
In general there are two possibilities to do:
1. Replace the ""standard" DML-operations of forms by your own operations. This is done by using the ON-INSERT, ON-UPDATE and ON-DELETE-triggers in forms, so its a client-side operation.
2. Base the block on a view instead of a table, let forms do its standard DML-operations and do your own operations on INSTEAD-OF-triggers on the view, this is the server-side operation.
Personally, i prefer the second option, for it keeps the business-logic in the database and the client-side "thin".
Implementing the first method:
Forms marks as record for the next DML when you change any relevant item. A relevant item in this sense is one of the basetable-items, or a non-databaseitem, which in turn changes a databaseitem. You can also set the property "Lock Record" on a non-database-item to "Yes" (thats what you have to do). If a record is marked that way, forms automatically tries to lock the record. So you would also have to create an ON-LOCK-trigger on the block and do your own lock in it. And last, put your DML-operations inside the ON-UPDATE, ON-INSERT and ON-DELETE-triggers

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