Deleting Millions of Selected rows from a production Table.

Hi Friends.
I have to copy millions of Rows from one table to a second one to do and export of its Data and run a Truncate command after(Second one). The main problem is the Time spend it in the Deleting process. The Inserting is nice and easy with /* +Append */ But The Deleting is a mess because required to much time and make the process really slow....Could someone give me a tip with this issue? Thanks for your time!
Emmanuel G. Carrillo Trejos.

It would help if you could quntify "subset" here. If you are deleting 75% of the table, it will likely be faster to follow Syed's suggestion and move the data you want to keep to a new table, drop the old table, and rename the new table to the old table name. If you are going to be deleting a small fraction of rows, but you are going to be doing this regularly (i.e. you delete all rows older than X days), it will be faster to partition the table and drop the partition.
I see no possible beneit to playing around with any transaction-related comands.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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How do I select rows from the same table that have multiple occurances

Hi Everybody,
I am trying to select records from a detail table by grouping it. The table has more than 1 million records and the query is not performing well. The basic question is how to select a distinct record from a table which matches all values in one column and any in the other.
desc SCV
ID NUMBER PK (ID + SCRID)
SCRID NUMBER FK(SC)
ID SCRID
1 1
2 1
3 1
4 2
5 2
6 3
7 4
8 4
desc PROJECTS
ID NUMBER PK
NAME VARCHAR2(100)
ID NAME
1 PROJECT1
2 PROJECT2
3 PROJECT3
4 PROJECT4
desc PJS
ID NUMBER
PROID NUMBER FK (PROJECTS)
SCRID NUMBER FK (SCV(SCRID + SCVID)
SCVID NUMBER
ID PROID SCRID SCVID
1 1 1 1
2 1 1 2
3 1 2 5
4 1 3 6
5 1 4 7
6 2 1 3
7 2 2 4
8 2 2 5
9 2 4 7
There are over 1 million records in PJS.
desc TBP
SCRID NUMBER
SCVID NUMBER
SCRID SCVID
1 1
1 2
1 3
2 4
2 5
3 6
4 7
4 8
The requirement is to select projects that have matching SCRID, SCVID from TBP such that
all distinct SCRID should match and within that and any SCVID match will do. (A "AND" between each SCRID and an "OR" for each SCVID in that SCRID like 'SCRID = 1 AND (SCVID = 1 OR SCVID = 2 OR SCVID = 3) AND SCRID = 2 AND (SCVID =....)
So, for the sample data it should return us PROID = 1
I have few queries written for this:
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 1
INTERSECT
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 2
INTERSECT
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 3
INTERSECT
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 4
This query performs well but the cost is very high, hardcoding, sorting.
The 2nd option is to:
SELECT pjs.PROID proid
FROM TBP tbp,
PJS pjs
WHERE pjs.SCVID = tbp.SCVID
AND pjs.SCRID = tbp.SCRID
GROUP BY pjs.PROID
HAVING COUNT(DISTINCT pjs.SCRID) = (SELECT COUNT(DISTINCT SCRID ) FROM TBP)
This has a low cost but runs slowly.
One more way I tried was with the IN operator like
SELECT DISTINCT PROID FROM PJS A,TBP T WHERE T.SCRID = 1 AND T.SCVID = A.SCVID
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AND PROID IN (...SO ON with each DISTINCT SCRID.
Again this involves too much of sorting.
Any help will be appriciated.
Thanks in advance.

Hi Andrew,
Use DELETE t_itab statement inside the loop.
I have modified your code. It is perfectly working.See bellow -
LOOP AT it_zmember01 INTO wa_zmember01.
WRITE: / wa_zmember01-mnumber UNDER 'NUMBER',
wa_zmember01-mname UNDER 'NAME',
wa_zmember01-mdob UNDER 'DOB'.
WRITE / '-----------------------------------------------------------------'.
DELETE it_zmember01. " Modified
ENDLOOP.
DELETE it_zmember01. statement inside the loop will delete the current row of the table.
Regards
Pinaki

Deleting a row from the item table

Hi All,
I have a requirement where I need to put a button to delete the selected row from the item table and for this I have written the following code:
DATA lo_nd_t_bseg TYPE REF TO if_wd_context_node.
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Now the problem is although it's deleteing the selected line correctly but because of this I am losing one line on the screen for the user to enter... my form has a fixed number of lines and in my case it's 10... so everytime I am using deleting a line item I am losing one line to enter..... can you please tell me how can I avoid this?
Edited by: rajatg on Aug 4, 2011 3:12 PM

lets say...
i have 1,2,3 documents
i have cleared , document 2....
1. when the user selects this record.... you can read the context_element....using the context element you can get the values and clear those values and set the blank values...
when the user click on save ...you can have only those two records in the table.
2. conitnue with your logic .... remove_element. once it is done ,,, create_element at the deleted index...
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Hi All,
We are working on jdev 11.1.1.5.3. We have one ADF table as shown below. My requirement is to delete a selected row from table, but it is deleting the first row only.
<af:table value="#{bindings.EventCalendarVO.collectionModel}" var="row"
rows="#{bindings.EventCalendarVO.rangeSize}"
emptyText="#{bindings.EventCalendarVO.viewable ? applcoreBundle.TABLE_EMPTY_TEXT_NO_ROWS_YET : applcoreBundle.TABLE_EMPTY_TEXT_ACCESS_DENIED}"
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>
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We have tried the below code as well in deleteCurrentRow() method
RowKeySet rowKeySet = (RowKeySet)this.getT1().getSelectedRowKeys();
CollectionModel cm = (CollectionModel)this.getT1().ggetValue();
for (Object facesTreeRowKey : rowKeySet) {
cm.setRowKey(facesTreeRowKey);
JUCtrlHierNodeBinding rowData = (JUCtrlHierNodeBinding)cm.getRowData();
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The same behavior still.
Thanks in advance.
Rechin
Edited by: 900997 on Mar 7, 2012 3:56 AM
Edited by: 900997 on Mar 7, 2012 4:01 AM
Edited by: 900997 on Mar 7, 2012 4:03 AM

JDev 11.1.1.5.3 sounds like you are using oracle apps as this not a normal jdev version.
as it works in 11.1.1.5.0 you probably hit a bug which you should file with support.oracle.com...
Somehow you get the first row instead of the current row (i guess). You should debug your code and make sure you get the current selected row in your bean code and not the first row.
This might be a problem with the bean scope too. Do you have the button (or table) inside a region? Wich scope does the bean have?
Anyway you can try to remove the iterator row you get
public void deleteCurrentRow (ActionEvent actionEvent) { DCBindingContainer bindings =
(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
DCIteratorBinding dcItteratorBindings =
bindings.findIteratorBinding("EventCalendarVOIterator");
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Thanks,
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wow now link http://blogs.oracle.com/smuenchadf/examples/#134 is working.thanks a lot.
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Hello Tamas ,
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<REMOVED BY MODERATOR>
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SRSSMailMergeIssue.pdf
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select
dk.ucm_docketnumber [UCM DocketNumber],
dk.ucm_docketid [UCM DocketID],
vc.FirstName [Victim FirstName],
vc.MiddleName [Victim MiddleName],
vc.LastName [Victim LastName],
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vc.Address1_Line1 [Victim AddressLine1],
vc.Address1_Line2 [Victim AddressLine2],
vc.Address1_Line3 [Victim AddressLine3],
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vc.Address1_PostalCode [Victim Postalcode],
oc.FirstName [Offender FirstName],
oc.MiddleName [Offender MiddleName],
oc.LastName [Offender LastName],
oc.Suffix [Offender Suffix],
oc.Address1_Line1 [Offender AddressLine1],
oc.Address1_Line2 [Offender AddressLine2],
oc.Address1_Line3 [Offender AddressLine3],
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pc.Address1_City [Arresting Officer City],
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pc.Address1_PostalCode [Arresting Officer Postalcode]
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Finding missed sequence numbers and rows from a fact table
Hi
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Deleting Millions of Selected rows from a production Table.

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