Delete change log data

I was going through posts regarding delete change-log data but I am bit confused with the answers.My data is moving from ODS to CUBE and for the performance reasons I want to delete Change-log data from PSA and keep only 3 day requests.My question - if I delete Change-log whether it effects the delta data from ODS to CUBE.Change-log maintains images so If I keep only 3 requests there will be images of only those 3 request data.If this happens then it will effect all the delta data going into CUBE
Let me know your suggessions
Rgs,

Hi,
     Yes, you can delete the data from the Change Log unless until you do not need to re-construct the data again from the change log table.
     As a good principle for safety reasons if data is not too large, you can keep the data for 7days. This will ensure us to be safe. If something went wrong on week-end say 2 days were gone and on 3rd day the user has identified and raised a ticket on this. Forth day will be for analyzing and re-construction.
    So, unless until if the data is not too large, you can keep it for 7 days in the Change log table and the rest you can delete. As said by the other members, deletion of Change Log table does not affect the delta as it compares with the Active Table and creates a Before Image and After Images records and updates in the Change Log Table.
Raj

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How to delete Change log data from a DSO?

Hello Experts,
I am trying to delete the change log data for a DSO which has some 80 Cr records in it.
I am trying to follow the standard procedure by using the process chain variant and giving the no.of days but somehow data is not getting deleted.
However the process chain is completing successfully with G state.
Please let me know if there are any other ways to delete the data.
Thanks in Advance.
Thanks & Regards,
Anil.

Hi,
Then there might something wrong at your Chang log deletion variant.
can you recreate changlog deletion variants and set them again.
Ty to check below settings with new variant.
Red mark - won't select
Provide dso name and info area, older than and select blue mark.
blue mark - it will delete only successfully loaded request which are older than N days.
Have you tested this process type changlog deletion before moving to prod per your data flow?
Thanks

Problem delete chang log from process chain BW 7.01

We have upgrade BW from 3.5 version to 7.01 version two month ago.
Now I realized that the process chain running one a week to delete PSA and change log don't work well after upgrade.
The process chain end without errors (status is green), but the change log are not deleted.
In the test system I try to delete the Change Log in 2 mode:
1-with the variant "Deletion of Requests from the Change Log " and the datastoreobject = myods and all the option (correct request, incorrect request and "Delete Activation Requests Only"). In the log i see this messagge
The following excluded selections will be processed:
No excluded selections found
The following included selectiosn will be processed:
Pattern: DataStore = 0FIGL_O06, InfoArea = *
The following reqeust selections were set:
Number of days = 0000000010, Successful = X, Incorrect = X, Curr. Requests =
The following change logs were selected:
2-with the variant "Deletion of Requests from PSA " and the datasource= 8myods and all the option (correct request, incorrect request). In the log i see this messagge
The following excluded selections will be processed:
No excluded selections found
The following included selectiosn will be processed:
Pattern: DS = 80FIGL_O06, LS = BWTCLNT100, IS = , AC =
The following reqeust selections were set:
Number of days = 0000000015, Successful = X, Incorrect = X, Load requests =
The following PSAs were selected:
In both case the change log is not deleted.
I can delete the change log only using Manage screen of my ods and then using Menu -> Environment ->Delete Change Log Data.
Anna Maria

I see that this topic is still active/unanswered...
We're having the same problem, but not just changelogs, also for PSAs. We have a weekly process chain that does housekeeping on our BW system, cleaning up PSAs and changelogs, compressing cubes, realigning time-dep masterdata and renewing indexes.
The PSA chain runs fine and about 90% of all PSAs get deleted, but there are some datasources (all of them are of type 8* datamart datasources) that don't get their PSAs deleted. It says "The following PSAs were selected:" and then nothing happens...
I tried all tickbox combinations and checked that there are no PSA entries blocked by invalid partitions. Manual deletion (via "manage" in the datasource) works fine, but is tedious and time consuming.
Also, most of the 8* datasource PSAs do get deleted. Just a handful (+/- 25) get skipped somehow.
Any ideas?
Thanks,
Eduard
PS: We're still running 3.5-style backend dataflow, but will eventually get converted to transformations and DTPs. But that's not on our agenda (yet).

Delete change log

HI BI Expert,
I have got the requirement to delete change log using process chain. I have included the Objecty Type callled Change Log Table and DSO as object name and finally included this process after activating data on DSO process. Whenever, I scheduled the process chain or ran it immediately as well in order to delete change log. But this process does not seem to be working at all. The number of records on change log table is the same as before.
The process chain is as follows;
1. Variant
2. load data to PSA and then DSO
3. Delete PSA data (older than 30 day)
4. Activate DSO Data
5. Delete Change Log (older than 30 day)
Please kindly suggest me what I need to do to make this process working.
Thanks for your help.

hi,
hope u can include all the PSA and change log deletion in different chain and try to trigger the chain weekly, since if u do as in ur chain and if u miss any records and you have to disturb the source again.
try to delete the change log manually and chk if working.
Ramesh

Change Log Data from DSO to CUBE

Hi Experts,
Is it possible to load/transfer change log data as well from DSO to Cube
Thanks

Hi,
Yes it is possible.
Create a DTP from DSO to cube.
In the extraction tab of DTP choose the option
Datasource Change log
Hope it Helps!!
Reward if useful
Manish

Change Log data into SAP BI

Any best practices for getting change-log data similar to that captured in CDHDR/CDPOS tables into SAP BI? What options exist for tracking changes to sales orders or invoices into SAP BI without touching CDHDR/CDPOS tables?
Thanks,
Vinny Ahuja

hi,
you check weather that data source carried out delta loading or not by using
RSA7 T-Code. In represents to sales or invoices, if that particular data source meant
for delta loading into bw means it will show status green. by seeing this particular
data source carried out delta loading in to bw system.
if helpful provide points
regards
harikrishna N

Extracting HR Change Log Data to BW

Hi Guru's,
does anybody know how to extract data from the HR change log (among others, cluster table PCL4)? I found two function modules HR_INFOTYPE_LOG_GET_LIST and HR_INFOTYPE_LOG_GET_DETAIL
that should be giving the data in the correct format.
Has anybody ever used these Function modules for (delta) extraction to BW?
Or are there other ways to extract this type of data?
I already got some pointers from CSM Reddy in a previous posting:
http://help.sap.com/bp_biv170/html/Bw.htm
http://help.sap.com/bp_biv235/BI_EN/html/bw.htm
But they don't seem to work any more.
Best regards,
Arno

Those links you gave didn't work for me . . .
I have toyed with using those function modules in the past. I was trying to solve an issue I had: With heavy customization on 0EMPLOYEE, it took forever to extract the data for that infoobject as we had more than 10 extractors . . .
I no longer have access to the BI system, but I used one of the function modules you mentioned and loaded it into a DSO. From there, I used the DSO as a filter for my 0EMPLOYEE extractors. Using some ABAP, I passed to the extractors a list of employees who had data change in the previous day and extracted all of their information (should extract all in that case to properly get the begda and endda for the master data).
It had the potential to really speed things up but I never got to finish so I've never seen it in a production environment. Hopefully this helps . . .

Change log data

Hi,
We have lots of data loaded in DSOs. We are in a process of clearing the change logs. And want to find out from which date the data is available in change logs.
What is the best and quick way to check the date from which the data is available in change logs.
Thanks in advance.

Hi,
I have been doing this way only to check the from date. Its like a trial and error method. I input fiscal year period eg: 001.2008 to 012.2008 and check the number of entries. This way i will have aidea if data is available for thie period. Else check for other dates.
But this has become very manual and cumbersome process. Is there any other way to find from when the data is available.
I hope you get my point.

Issue with Incremental migration - Change log data gone

Project Info :
We are migrating clients MOSS 2007 environment to SharePoint 2013 using Avepoint Docave migrator. It’s a migration and new development project where in client require new components and UI to be developed
Problem statement :
We had done last incremental migration of the data in August 2014 and when we tried doing the incremental migration in December it was found that “Change Logs”, based on which Docave does the incremental migration have been wiped out due to the Change log
duration set to 60 days by the client.
Docave support is saying that the only way to get the correct data is to perform full migration. As we have done lot of page fixes post migration, we want to avoid full migration.
Just for the information, Change logs refer to the "Event cache" table created for each content Database and the duration of the change can be set via
Central Administration > Application Management > select Web application > General Settings >Resource Throttling > Change Log
Any thoughts/approach on how shall we proceed to tackle this situation
Regards,
AMit

Hi,
As Avepoint Docave migrator is a third party product, I suggest you can contact the corresponding support for help.
If you want to migrate MOSS2007 to SharePoint 2013, I suggest you can follow the article below:
http://technet.microsoft.com/en-us/library/ee947141(v=office.15)
Best Regards
Jerry Guo
TechNet Community Support

Change log data is NOT captured for PO screen exit fields

Hi,
We created a new tab at item level for PO Screen(ME21N) for the purpose of STOs(Document Type UB) & created 3 New fields in that new tab through Screen Exit( SAPMM06E, SAPLXM06 0111 ).
When we are entering data in those 3 new fields while creating new STOs, those data are captured in EKPO table.
When we are changing the OLD STOs for those 3 new fileds, data is modifying in EKPO table. But changes are NOT inserted in CDHDR and CDPOS table for those 3 new fields.
<b>Please help us to track the changes in those 3 new field data changes for old STOs.</b>
Please let me know if you need any further clarification regarding this.
Thanks & Regards,
Mani.

Hai Naimesh Patel,
      Thanks for your promptly reply.
      Now My issue has been resolved successfully with your help.
      I rewarded Points for your reply.
Thanks & Regards,
Mani.

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Change Log Table entries without Dates and How to Delete these entries !!

Hello Experts,
I was analyzing Change Log tables of some DSOs and figured out in some tables we don't have Date Column and some tables with date columns but many entries with "00/00/0000" date.
Any ideas on this ? Any idea how records can get into the table without dates and if SAP provides a safe way to remove them (without dates) ?
Many Thanks in advance, Please help.
Regards,
S. Patel

Hi Sunil
Date fileds 00/00/0000 means date are blank..that means either you did not get them from source system or the transformation is not mapped.
Do not delete change log selectively, that might affect your delta loads.
Rather delete old change log ...
From DSO administration ---use the main menu to choose Environment ® Delete Change Log Data.
For more information you can check the log below.
Cheers
Anindya

Deletion of data from change log table and PSA

Hi,
For a DSO I want to delete data from "Chnage log table" and " PSA Tabel".
For the DSO manage screen I have seen " Environment-> " Delete changelog table" from this we can delete chnage log table data as per my understanding.
at PSA Level Mange screen also I have seen " Environment-> " Delete changelog table" from this option also it deletes the data from change log table or it deletes data from PSA table?.
if this option also deletes data from changelog table then how we can delete data from PSA table?
Please clarify me

Hi,
I am not sure what are you referring to from your point "PSA Level Mange screen also I have seen " Environment-> " Delete changelog table". When ever you click on manage for your psa you will be routed to a popup where you can see all your requests in the PSA table & there after if you click on any single request you will get Environment menu option but there wotn be any change log deletion option available. Please check again? Right clicking on your data source will take you to the manage requests for PSA. You can selectively delete the requests as required.
For DSO when you right click on manage you can directly find Delete change log data option in the Environment tab. there you can select the requests you want to delete.
Also if you want to automate the deletion process then you can simply create a chain and include the steps for PSA deletion & change Log deletion accordingly.
Also it is recommended to keep on clearing the PSA table & Chage log data at regular intervals as it saves the disk space & thus helping in performance optimization
Please refer the below doc at SDN, it will be helpful for you in automating the process of change log deletion & PSA deletion.
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a02ba9e7-bb6f-2c10-09b4-e86b9fcbad41?QuickLink=index&overridelayout=true
Hope it clears your doubts
Thanks

Delete Entries of Change Log Table

Can any one tell me when do we require to delete the content of the change log table of standard DSO. I am just fresher to SAP BI.
Thank You

Hi
Deleting data from the change log for an ODS object is recommended if several requests, which are no longer required for the delta update and also are no longer used for an initialization from the change log, have already been loaded into the ODS object. If a delta initialization for the update exists in connected data targets, the requests have to be updated first before the respective data can be deleted in the change log.
Only a temporary, limited history is then retained. The change log can possible become so large you might want to reduce the amount of data volume and delete data for a specific time period.
How to Delete it
Since the change log is also stored as a PSA table, you can use the function for deleting data from the PSA to delete data from the change log.
In the ODS object administration, use the main menu to choose Environment -
> Delete Change Log Data.
Or
Go to the PSA tree.
Use the main menu to choose Settings -
> Display Generated Objects, so that you can display the InfoSource for your ODS object. Your InfoSource has the same name as your ODS object, along with the prefix u20188u2019.
Use the context menu to choose Delete Change Log Data.
Santosh

After deletion ODS change log, Delta upload OK?

Hi all,
Now I am reducing data from BW server. For this purpose, I will delete ODS change log. Both of data "from ODS" and "to ODS" are uploaded by Delta Upload.
If I delete change log after last delta initialization, is there any problem to next delta upload?
For example, the last delta initializing was done April 1. And I delete the change log up to April 30. After this operation, can be expected any problem to Delta upload?
Bamboo Shampoo

I dont think it will cause any issue with next delta loads.
Data goes from ODS to its targets from change log table.
But I think better have strategy like..'delete change log data only for requests older than say...1 month or 2 months..'
so that if u have problems with recent data loads..u can reload easily..
u can also try cleaning up old requests from the PSA tables in the system..
cheers,
Vishvesh

Delete change log data

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