Question

how can i see the change in data base made by other user with my opened form without requery?please help!

Asked by: mahbub007

I have made one form ,frm1 with forms 6i based on emp table.When two user access emp table concurrently,if one user make change to emp thorough his opened form ,the other user can not see the change without requery to emp with his opened form.How can I get the functionality so that one user will see the change made by other user without requery? Some body please help.

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Asked On
2003-01-11 at 02:12:54ID20452477
Topic

Oracle Database

Participating Experts
3
Points
50
Comments
3

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    Answers

     

    by: taiskPosted on 2003-01-11 at 04:29:33ID: 7707393

    A requery, be it manual or automatic, is necessary to retrieve the changes that the other user made.  You should really lock the record that as the first user retrieves it so that the second user cannot modify it.  The lock is released when the first user finished with it.

     

    by: oraclexpertPosted on 2003-01-12 at 01:28:12ID: 7710998

    When the first user is making changes to emp a rollback segment is written(the before image of the data) for the second user.  So when the second user is accessing the same table that the first user is modifying, he will not see the changes made until the query is commited by the first user.  After the commit, the second user is still reading from the rollback segment, in order for the second user to see the new data he will have to requery the table to see the new data and not read from the rollback segment, but from the new modified data on disk.  

     

    by: markgeerPosted on 2003-01-13 at 09:22:06ID: 7718562

    I agree with the other responses: a re-query is needed.  There is no way around that in Oracle Forms, but you may be able to automate the re-query if you want to.

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