Inserting row in Updateable Report

Hi all,
I have an updateable report that I can update no problem. However, when I try insert a record I get the following error ...
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 = "37B04CEAA8C5C627F8FC74D27A1665C8"., update
I have isolated the error to the date field and I think the DML is doing something funky in the background.
Anyone had this problem or know how to get around it?
Thanks,
Russell

Check if all of your updatable columns are referencing the table columns properly.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
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Just in case you have not noticed this already , you can set your posts as "watched" automatically. heres how:
1. Go to your Control Panel
2. Click on "Your Settings"
3. Set the two Radio button for wathc to Yes and save.
Next time when you login you will be able to see your Watches on your Control Panel and in the main forum Thread List they will appear with binocular icon.
Regads,
Edited by: Prabodh on Aug 23, 2010 3:58 PM

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Message was edited by:
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Check out my APEX-blog: http://inside-apex.blogspot.com
Check out the ApexLib Framework: http://apexlib.sourceforge.net

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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 = "A1C24045A4B826FBB8E8D7CB176F7B41", item checksum = "B31829463D576B930C07388D06AE91D8"., update "BNELSON"."TWP_REG_STU_ATT" set "REG_ATT_ID" = :b1
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Chris,
I created a new page with a tabular form update using just the single table with all DML types (Add, Delete, Save), and for all fields.
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Error in mru internal routine: ORA-20001: Error in MRU: row= 1, ORA-01407: cannot update ("BNELSON"."TWP_REG_STU_ATT"."ATT_DT") to NULL, update "BNELSON"."TWP_REG_STU_ATT" set "REG_ATT_ID" = :b1, "STU_ID" = :b2, "ATT_DT" = :b3, "PERIOD" = :b4, "CLASS_DAY_TYP" = :b5, "TCHR_ATT_CD" = :b6, "TCHR_ID" = :b7, "CRSE_ID" = :b8, "CREATE_DT" = :b9, "CREATED_BY" = :b10, "UPDATE_DT" = :b11, "UPDATED_BY" = :b12, "SCH_ID" = :b13, "TCHR_UPDATE_DATE" = :b14 where "REG_ATT_ID" = :p_pk_col
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OK
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OK
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I'm trying to insert a row using "javascript:addRow();" where the report query is an SQL Query (Updateable Report).
1) Several of the fields are display-only with defaulted values.
2) No problem with the VARCHAR2 fields.
3) And if RUN_DT is a text field, the insert works.
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Now, this is not a new question. See:
Error inserting sysdate with time in tabular form region https://forums.oracle.com/thread/2551916 (Not answered)
Date value in tabular form https://forums.oracle.com/thread/2478358 (Not answered)
Help! Unable to set default date value for Tabular form DB date field! https://forums.oracle.com/thread/2473208 (Not answered)
Default Value Date Picker Field https://forums.oracle.com/thread/2468973 (Not answered)
Tabular Form Default Value PL/SQL https://forums.oracle.com/thread/2464192 (Not answered)
Display 1st region invoice date into tabular form invoice date column. https://forums.oracle.com/thread/2458561 (Not answered)
Default System date and time in Tabular form https://forums.oracle.com/thread/2449615 (Not answered)
Setting default value of Tabular form item is not working https://forums.oracle.com/thread/2396024 (Not answer)
apex tabular form https://forums.oracle.com/thread/2337098 (Not answered)
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I will try to replicate on apex.oracle.com
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Howard

Update: At least in my case, it seems the RUN_DT date column cannot be Standard Report Column. I made it "Display as Text (saves state)". Standard Report Column works for the defaulted VARCHAR2 columns. Go figure!
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I have a report on my form, of type SQL Query (updateable report), that I populate using the following SQL:
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Best regards
Simon

Hi Simon,
This might be stating the obvious, but first up I would determine exactly where the code is failing by putting dummy values instead of variables into the following statements: -
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