MRU Error : Current version of data in database has changed since user init

When i use HTMLDB Wizard to create Master Detail Form
(You can see step by step what i doing by see this url :
http://jroller.com/resources/w/wildan83/MRU%20Error.pdf
The is error in MRU :
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in database has changed since user initiated update process. current checksum = "A884FA378C851786DDFE3A33709CB23C", item checksum = "0EEFFABE8252B0B279DB14A77F567F5D"., update "CNAP2"."ENROLLMENT" set "STUDENT_ID" = :b1, "SECTION_ID" = :b2, "ENROLL_DATE" = :b3, "FINAL_GRADE" = :b4.
If there something missing.., just say ..
Thanks for the help.

Oh i see ..,i never think if that is the source of the MRU
error.
Ok ..,
Now ..., i have new question .., how can i change so the the primay key in detail table (enrollment table), i have one primary key with two columns .., if you don't understand what i mean ..,
check this alter table statement :
ALTER TABLE ENROLLMENT
ADD CONSTRAINT ENR_PK PRIMARY KEY
(STUDENT_ID
,SECTION_ID) ;
Now the question is .., when i using wizard to create master detail form .., html db automatically make student_id and section_id as the primary at "application level (html db)" .., how can i change this behaviour ..,
i want the html db not treat this two column as primary key ?
Do i have to create master detail form manually to accomplish this ?
Thanks before .., sorry if my english is not too good.

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APEX Error: Current version of data in database has changed since user init

Hi:
APEX 4.1
I have a page with 2 regions. The first region is built with custom SQL using the APEX APIs. I have a process the can successfully update records.
I built the second region with the tabular form wizard. This created the multi row update process.
I created a region button and the two process respond to that button: process for first region, then process for the second region.
When I add data to the second region and click the region button, I get the following error:
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Hello
If you try update the same data from 2 places you will got this message because:
Apex forms have locking mechanism.
1. During fetch data to form apex calculate checksum from every items on the forms.
2. Before update process apex again fetch data from database (in background) and calculate checksum again if checksum from point 1 is the same like this checksum APEX realy update data with new item values. If no, You will got your error (apex secure You, You realy don't know what you update).
According this if you change data which you use in the form between 1 and 2 point you will got this "error". You can check it for example if you change data from SQL/Plus or from other form.
Probably you forget about this locking mechanism during designe your process from APEX API <- successfully update records (maybe successful but you don't know what you updated) : )
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ORA-20503: Current version of data in database has changed since user initi

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ORA-20001: Current version of data in database has changed since user.....

Hi,
I am having a tabular form which I created using the wizard
I am facing the below error when I try to update or 'Add Row'
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in database has changed since user initiated update process."
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I'm getting an error when updating a Apex Tabular form. It's complaining that the row id's are out-of-sync. The error reads,' Current version of data in database has changed since user initiated update process. current row version identifier = "56DW5A8A7EBA3B42073AE6E71480A784" application row version identifier = "99B52A15F10E34647E9E18B6B7AE8C30" .
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Make sure that the form is defined such that it "knows" that the PK is being set by a trigger. Do not try to set it in the form if the trigger is doing it. Pretty much if a trigger attempt to modify any column that also was editable (including hidden columns) in the form, the two will conflict.
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[email protected]

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Hello,
Application Express 3.1.0.00.32
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Error in mru : ORA-20001: Error in MRU: row= 1 Current version of data ...

hi i am getting tihs error msg
Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in database has changed since user initiated update process. current checksum
i'll try to show a form table in which i can edit and add data
when i use the wizzard it is all fine with editing but i cant creat a new item because i have to insert my primary key and that shoud be done automatically.
ok again
my PK is at first col1 and second col2
i got a dropdown list in which i choose an item from col1 to just show items in my form with that value, here are more than one results possible
no i want to edit col2 up to col4
or add a line with the same col1 but different col2 and some col3-col4 values
but if i add a line i want to insert col2 to up to col4 (and the PK from col1 shoud be automatically insert from my dropwdown list i choosed before)
i want in col2 an drop down list
so all this works fine i got all the changes i want but when i try do save or update my changes i got the error frome above
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to get the new line actually u use the add row link but i use instead after my select statement an
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thx for ur help
regadrs
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Hi Falk,
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To create a sequence number and apply this to a new record, you need to do two things:
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Error in MRU: row= 1, ORA-20001: ORA-20001: Current version of data in data

I have a page that has a form to my issue table and on the same page, in a different region, I have a tabular report that shows the issue_activity for the specified issue. The primary key on the issue table is the issue_no which is a sequence and the primary key on the issue_activity table is (issue_no,line_no), where issue_no comes from the issue table. A parent-child relationship between issue and issue_activity.
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A user navigates to a form...makes modifications...saves the form...and is redirected to another page. Then, the user clicks the browser back button to re-edit the form...saves the form and gets the following error...
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Then when the users get to the page after making a modification they will see a "back" button.
The last step is to create a branch that will take the user back to the form if they click the button and populates the form item for the primary key.
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Dan
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Mensagem 7343, Nível 16, Estado 4, Linha 1
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Edited by: user10641061 on 14/10/2011 18:48

The columns that I want insert in oracle database have this data:
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Edited by: user10641061 on 15/10/2011 15:48

MRU Error : Current version of data in database has changed since user init

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