Multi-row Delete (MRD) on a view?

All,
I created a tabular form on a view, using an instead of trigger to encapsulate the logic for the data manipulations. Works great--until someone checks a row and hits the delete button, at which point APEX throws this error:
ORA-20001: Error in multi row delete operation: row= 107970-18527, ORA-06502: PL/SQL: numeric or value error: character to number conversion error,
Error multi row operation failedAs far as I can tell, it's not even getting to the trigger; I commented out the body of the instead of delete trigger (replacing it with null), and I'm still getting the same error. I have no validations or processes on the page at this point.
The underlying data of the view requires three columns for a unique identifier, so I've concatenated two of them together as an extra column in the view (creating a varchar2 column), and told the MRD to use the calculated column and the third column as the primary key columns. But even using two of the three numeric columns (tweaking the trigger to use a hard-coded value for the third) as an ID fails miserably.
Any idea what's going on?
Thanks,
-David
(In case it makes a difference, we're on APEX 4.0.1.)

Hi David,
This might help:
http://oraclequirks.blogspot.com/2011/07/ora-20001-error-in-multi-row-delete.html
Hope it helps!
Regards,
Kiran

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Problem with multi row delete

Hi, I'm new in apex and I tried to build master detail report on some view. Everything is cool but "delete checked" doesn't work.
"ORA-20001: Error in multi row delete operation: row= , ORA-06502: PL/SQL: numeric or value error: NULL index table key value,"
the problem is that I don't know what is wrong :), I have a special trigger "instead of delete on MY_VIEW", but in this error problem is not explained.
Anybody knows what can be wrong? It is probably a problem with trigger or multi row doesn't work with views? I couldn't find how MRD knows what kind of statement use to delete rows so I don't know if the statement that program used is correct. In debug it lokks that:
0.32: ...Do not run process "ApplyMRU", process point=AFTER_SUBMIT, condition type=REQUEST_IN_CONDITION, when button pressed=
0.32: ...Process "ApplyMRD": MULTI_ROW_DELETE (AFTER_SUBMIT) #OWNER#:MY_VIEW:ITEM1:ITEM2
0.33: Show ERROR page...
0.33: Performing rollback...
thanks for any help
//sorry for english mistakes
edit: it doesn't matter if I use in trigger delete from ... where item1=:OLD.item1 ; or if I use item1=:P4_item1 (which actually saves correct values)
Edited by: user5931224 on 2009-06-13 08:55

I realised that this is not a problem with trigger, I changed trigger to "NULL;" and problem is the same. Maybe sb used master detail on view not only on tables and know what can be wrong in this situation?

Tabular form - Multi row delete error

Apex 4.0.2
We have a simple CRUD type of application on a bunch of tables built using Apex v1.6 that has, over the years, been upgraded to v4.0.2 and it is working mostly fine. It uses all out-of-the-box standard components, forms, classic reports, nothing too fancy. Recently one of the tabular forms started to misbehave, the multi-row-delete process raises a No Data Found error. The tabular form is based on a view with a INSTEAD OF trigger to handle the DML. Manually deleting the row in SQL*Plus works fine delete from mytab here pk_id = :pk_id but selecting the same row in Apex and clicking Delete raises the error.
How does one go about troubleshooting & fixing this sort of thing? I tried re-saving the region in the Builder, exporting/importing the entire app, nothing. Running in Debug mode doesn't really provide any additional information, just that the MRD process failed. Tabular forms are the most frustrating, opaque component in Apex, wish they were easier to troubleshoot.
Any ideas?

Hello Vikas,
>> How does one go about troubleshooting & fixing this sort of thing?
By given us a bit more information :)
• Is it a manual Tabular Form (using the ITEM API) or a wizard created one?
• Are the Insert/Update operations work correctly? If not, what is the type of your PK column(s)?
• If the problem is limited to the Delete operation, maybe the problem lies with the checkbox column. Are you sure that on page it is rendered as the f01 column?
• As triggers are involved, can you save the PK that the trigger sees? Is it the expected value?
• Are there any other processes that are fired before the DML process? If so, maybe the problem is with them. You can temporarily disable them and see if it change anything.
>> Tabular forms are the most frustrating, opaque component in Apex, wish they were easier to troubleshoot
Yes, I agree. However, I believe that 4.1 made some serious advancement where Tabular Form is concerned. Having simplified Tabular Form related Validations and Process should make things easier, and as a result, prone to less errors. Still, the main problem is that the type of error you are talking about is usually the result of metadata problems and these are indeed very hard to track.
Regards,
Arie.
&diams; Please remember to mark appropriate posts as correct/helpful. For the long run, it will benefit us all.
&diams; Author of Oracle Application Express 3.2 – The Essentials and More

Validation in a Multi Row Delete

Hi all,
i made a page with an updateable report region - all works fine.
But now i want to do a validation in the process 'Multi Row Delete'.
The aim is to guarantee that the specific row is not deleted if the validation for that row fails.
How can i achieve that?
Any feedback is welcome.
Best regards
Martin

Hi,
many thanks for your reply.
Yes in my case it is a tabular form and the validation should be done vor 'multi row delete'. Accordingly to the article you mentioned i created a validation with the following PL/SQL code:
DECLARE
vRow PLS_INTEGER;
BEGIN
FOR i in 1..apex_application.g_f01.COUNT LOOP
IF apex_application.g_f01(i) IS NOT NULL THEN
vRow := TO_NUMBER(apex_application.g_f01(i));
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RETURN 'Delete is not allowed for this row.';
END IF;
END IF;
END LOOP;
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Best regards
Martin

ORA-20001: Error in multi row delete operation: ORA-01403: no data

Whenever I attempt a multi-row delete on my master detail page, I recieve the error:
ORA-20001: Error in multi row delete operation: ORA-01403: no dataI have seen in other threads that the primary key attribute of the underlying table needs to be set to 'Show' in the report attributes. I have tried this both with it displaying as 'Hidden' ('Show' is unchecked) and with it displaying as text. Either way still gives me the same error.
Is there anything else not mentioned in the other threads that could be causing this error for me?
Thanks.
BoilerUP

Jimmy,
In your multi row delete process you specify schema name, table and column name. Your report needs to be of type âSQL query (Updateable report)â. And your report needs to include the primary key column of your table. The column or alias name of that report column needs to correspond with the actual column name of your table.
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Please forgive my ignorance.
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Hi Monika,
It's been a while since I used 1.5 so I can't answer that, however whilst I'm not generally in favour of upgrading just for the sake of it, is there a reason why you wouldn't consider upgrading to a later release?

Multi Row Delete Error

Hi,
Am trying to do a multi row delete on a report. Have added a [row selector] to the report and a 'multi row delete' process. Copied this from a sample app i got, but when i try and delete a row(s) i get the following error message:
Unexpected error, unable to find item name at application or page level.
ERR-1002 Unable to find item ID for item "P2_ROWS" in application "120".
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Best regards
Simon

Simon,
Are you still having trouble with this?
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Multi-Row Delete from a table via a button without submitting the page

Hi,
I have a simple page based on a (temporary) table. There is a submit button that calls a PL/SQL process. However, I would like to have an 'Abort' button that deletes all rows from the table belonging to a specific user.
I had a look at 'Processes -> Data Manipulation --> Multi Row Delete' but this can only be linked to a page level event such as onSubmit. My onSubmit is linked to another process so this is not an option for me.
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Hi,
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Multi Row Delete and then I get a unique contraint violation on my PK

I have a simple table with 2 columns, one a PK. I have a checkbox style, multi-row delete function setup on this (to be honest, APEX set this up automatically).
I removed the add/edit functionality to keep just the delete button and delete procedure.
When I select an item, and then click delete, I get a unique constraint violation that I'm violating my Primary Key.
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Hi,
It sounds as though you haven't properly removed all of the add/edit functionality or that you still have some form of validation and/or computation in place or that you have a trigger that is trying to insert records into, for example, a history table (is the constraint on the table you are deleting from - the error message should tell you this?)
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Check for processes that could run if the user clicks the Delete button. Validations and processes could be conditional on either the button click or on request = "MULTI_ROW_DELETE".
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Multi-row delete

Hello,
I want to display a checkbox in a multi-row query for deletion.
when the user will submit, I want to delete all checked record.
I've tried to do it by creating a checkbox in the select statement of the query (select HTMLDB_ITEM.CHECKBOX (1, 'Y') checkbox, ...) and create a process to do the delete. Here my process code:
declare
l_val_rows varchar2(400) default null;
begin
for i in 1..htmldb_application.g_f01.count loop
if instr(nvl(htmldb_application.g_f01(i),0),1) > 0 then
delete gsr_corporates where id = htmldb_application.g_f02(i);
end if;
end loop;
end;
2 problems:
1)
When I submit, if my checkbox is not checked, I get error "Error in mru internal routine: ORA-20001: no data found in tabular form". If checked, it is working.
2)
When checked, I get the error "Error in mru internal routine: ORA-20001: Checksum column ("FCS") is required and was not supplied".
So, is it a good way to do what I want? If yes, what's wrong? If no, what is your suggestion?
Thank you
Jean

Jean,
Please take a look at this example:
http://www.oracle.com/technology/products/database/htmldb/howtos/checkbox.html#HANDLE
The problem is that when a checkbox is not checked, there is no corresponding entry in the array. Thus, the array indexes for f01 and f02 will be out of sync. To fix this, make the value of a checkbox, when checked, the primary key of the row you want deleted. Then you can simply walk through one array and delete every row that corresponds to an entry in it.
Sergio

Multi Row Delelte - Delete all rows

I have a multi row delete button with multi row checkboxes. When I tried to delete the selected rows, actually all rows are deleted. I have a multi row delete process.
Other information:
This tabular form displays all related users for one particular department. The department ID is the primary key in this reference table.
I am using APEX 2.2 and IE as browser. Any one else here know what settings I should set.

After review previous thread, I created the following PL/SQL expression for the multi row delete process in the condition field:
FOR I IN 1..APEX_APPLICATION.G_F01.COUNT LOOP
DELETE FROM tbl
WHERE colNM = APEX_APPLICATION.G_F02(APEX_APPLICATION.G_F01(I))
END LOOP;
END;
I also tried htmldb_application.g_f01.count to reference the selected rows. Both of them are not working. Someone, please help, where should I put this PL/SQL expression. I am pretty to APEX.
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Multi row block record_group or cursor?

I've done a lot of research on the Forms OTN forum and can't find a solution to this problem. I'll continue to research until an answer is posted to this thread. I've used the forms forums and Metalink for years and they've been a great help.
My problem -
I have a multi-row block built off a view. Each row has a check box. The canvas also has a button. When the button is pressed, each record checked will be processed. The problem is, I need to sort the data selected (checked) before it's processed. To complicate matters, the sort criteria is not in the view. My plan was to build a cursor off the block, but I'm having problems populating due to the multi-row aspect.. I also tried building a record_group but again ran into complications with it being multi-row. I'm not sure which method to use since I haven't found a clear-cut solution.
btw - using 10gR2.
TIA,
abc

AB, you're sure not very clear on this.
Aweiden has the correct suggestion: Create a PL/SQL table in the form, rather than a record group.
Here are the steps I would follow:
1. User queries and displays the data, and then checks some checkboxes. Do not use a when-checkbox-changed trigger, since they can check, then un-check boxes.
2. When user presses the process button, loop through the block as Aweiden has done above. However, I would call a procedure from within the loop to look up the values from the Mel_Item table. Store the values returned from the procedure within your pl/sql table, adding one row to the table for each row in your block that was checked.
As a side note, how difficult is it to join the Mel_Item table with your view when you query the block? You could store those sort values from Mel_Item along with the data from the view.
3. Once you are done processing the data block loop, sort the pl/sql table. (Maybe I can find the code lying around here somewhere, but a table sort like that can be coded in maybe 20 lines).
I am not sure, but are you saying above ("...insert each row into another table (other information is different so its not duplicate rows entirely)...") that you are inserting the data from the user-checked rows into a database table? That is certainly easier to do than writing your own sort, I guess.
4. After the pl/sql table is sorted, loop through it one more time, processing the data in the required sequence.
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Edited by: Steve Cosner on Oct 23, 2008 10:39 PM

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Need to perform multi-row update/delete

Gday,
I have a request to have one update button for a multi-row form. Also needed will be a checkbox as part of the row.
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Cheers

Hello:
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Hi,
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Multi-row Delete (MRD) on a view?

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