Regd Safety Interval Lower Limit for Generic Delta

Hi All,
Safety Interval Upper Limit =1 for a Generic Delta would get Delta based on yesterday's BW data.
What would Safety Interval Lower Limit would do for a Generic Delta .
Your inputs please
Sree

Hi,
just a short example:
you run a init today --> 20070525 (internal date format).
for the next delta tomorrow the system takes the last extraction date - 1 day so 20070524 for data selection and will store 20070526 as last extraction date and so on.
This is to make sure that you will get all additional records extracted which were changed or created on each extraction date, but after last extraction. OK, you will get some records twice, but therefore you normally post the data to a ods via overwrite mode and this will take care about the 'real' delta while doing the further posting to the cube.
Hope this helps
kind regards
Siggi

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Time interval limit for generic delta on timestamp

I have searched a lot about delta on timestamp in the forums.
But I'm still not clear with the safety upper and lower limits..how is my delta load affected by this value?
What happens if I dont specify any value for the interval limit?

Hi,
This is very simple thing, you must be knowing the concept of data posting in transactional system, e.g. creating a sales order.
When you create an order and press save, system takes data from this screen to the database tables and once this action, which is called "DB COMMIT", gets completed, you get data in your system tables. So this activity may take some time before you can retrive this information.
Let's say it takes 5 mins, so when you'll collect delta records, if some records, which are under process for DB commit, they won't come in delta. Say u collect these records at 12:00 AM and record posted 11:55 PM will take 5 mins to reflect in Database. So we keep safty limit of 5 min.
Upper and lower means starting and ending of time window, from which you want to extract records.
Hope it helps in understanding...
Regards,
Ashish

Safety Intervals for Generic Delta

Hello Gurus,
I want to know about safety upper limit and lower limit for generic delta.
I have gone through the previous threads related to this topic and i am not able to understand completely.
can anybody explains me this in detail with example in terms with Calday, Timestamp & Numeric pointer.
Thanks in advance.

There is very good example was exist on wiki.
please search and help yourself.
Use Google search by using search term " wiki generic delta".
You will get what you need.

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Hi Chandra,
When checking the source system the extractor is extracted using FM RKE_BIW_GET_DATA_API. When we display the datasource and click on generic delta, we are getting an error "Specified table does not exist."
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I have to create one data source which will contain two fields for generic delta...extraction of data will be through FM.SAP provides a standard functionality to create a generic delta. This can only be build on one selected field.
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Hello Siggi,
i have to create an delta enabled extractor for a database table.
The database table (=EAUS) contains the fields "ERDAT" and "AEDAT".
I'm a Newbie in ABAP und so i read some blogs, articles and how to do papers here.
But my tests haven't work:
1. I created a structure in SE11 for extraction. The structure contains all the of the database tabel (=EAUS)
2. Then I created a data element "ZDATE" in SE11. I integrated ZDATE in the structure.
3. Then I copied function group "RSAX" and function module "RSAX_BIW_GET_DATA_SIMPLE" in our namespace.
4. I used the copied function module as a template and adapted the coding in the function module. The coding is from the paper "Functional Module Based Delta Enabled Generic Datasource"
But i doesn't work. My deltaenabled generic datasource doesn't get the deltas. In RSA3 with update mode "D" no data records were selected. (I create new records in the database EAUS before I checked the extraction). The update mode "F" and "C" works.
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Jan

Safety Upper/Lower limit in delta extraction

hi all
since i am new,just i want to know
what is the diff between safety lower limit and upper limit
and how these are used in delta.
thankq in advance

I do see that you are new - but the topic of safety limits has been discussed many a time on the forums - please search the forums before you post...

EKBE table for Generic Delta

Hi Gurus,
Good Day to all. I just like to inquire some details for creating generic datasource with delta enabled. I have created a view table with fields from EKBE table, and created generic datasource that reads the view table I have created from EKBE, now it needs delta process with CPUDT as delta specific field name, seeing the data type of CPUDT, it is DATS with 8 length.
I would like to assure if what will be use as marker of delta, timestamp utc, timestamp local, calendar day and numeric pointer?
And if I use one of the above, what settings that needs to be use for the safety interval upper and lower limit?
Thank you for your inputs and really appreciate it.

Hi,
use the CALDAY as a generic delta pointer.
i would like to recommend as: Safety Interval for Upper Limit as 1 and Safety Interval for lower Limit as ZERO
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Phani.

How to set upper and lower limit for service notification in SPRO

Hello everyone,
Good morning....!!
I am new to SAP PM and to SCN as well.
I have a question on Service notification user status.
I have notification profile configured in SAP as below:
Status no      Status          Short text              Lower limit          Upper limit
5                  REGD          Registered                1                          70
10                PCKS            Pack sent                  1                          70
20                APRC            Application received 1                        70
etc..
I want the statusesto be set as navigation should only allow to go back one by one...like from APRC -->PCKS not to REGD.From PCKS -->REGD etc..not vice versa.
Can enayone explain me to how to set lower and upper limits for these according ot the above requirement.
for more details please check my attachment.
Thanks in advance..!!
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Sudha.

Once you change the status to previous status, just save the order. Then again open the order & try to change the user status.
Just I made replica of your profile. I could able to change (even without saving the order).

Query for generic delta

i need to create a extractor x_attr to bring master data attributes from a table y.how can set
the generic delta on this x_attr generic datasource.does a generic delta exists for attr
datasource?

Hi,
For delta to work properly in case of generic extractor.the field on which you want to make delta should be present in
the data source.
We have three delta.
1.Time stamp.
2.Cal day.
3Numeric pointer.
So depending upon your requirement and volume of your data you can choose the delta method.
Thanks,
Saveen Kumar

How can I get delta records for Generic Delta

Hi BW Gurus,
I am using Generic Extractor using View from CATSDB and CATSCO talbes. At the time of modifying and changing records I am unable to get those records in BW despite enabling delta in RSO2 screen. I am able to view those modified and added records in R/3 in tables. Plz help me how I get those records to BW.

hi,
After we loaded all the historical data uing full upadate . Implemenattion process is over , But we will have the Transaction data that will raise daily , So we have to store that New / changed data in Delta q , And extract them each day by Delta Update
So we will create an Info packege with the update mode as Delta , And schedule them when to start extraction , So we create the process chain uisng RSPC by giving the Info packege name . And extract the Detla daily as per schedule .
award pts if helpful..

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Once you change the status to previous status, just save the order. Then again open the order & try to change the user status.
Just I made replica of your profile. I could able to change (even without saving the order).

Doubt Reg Generic Delta "Safety Interval" Setting

Hi Experts,
I have a doubt regarding Setting "Safety Interval Upper Limit" and Lower limit in RSO2 for generic delta.
What does this setting imply?
If I do setting for calender day say both 1 then wht will be difference between delta before setting amd after setting?
Plz explain in terms other tham help provided...
Points will be awarded to say thanks..
Thanks in advance,
Sorabh

Hi Sorabh,
Here some SAP informations:
Safety Interval Upper Limit of Delta Selection
This field is used by DataSources that determine their delta generically using a repetitively-increasing field in the extract structure. The field contains the discrepancy between the current maximum when the delta or delta init extraction took place and the data that has actually been read. Leaving the value blank increases the risk that the system could not extract records arising during extraction. Example: A time stamp is used to determine the delta. The time stamp that was last read is 12:00:00. The next delta extraction begins at 12:30:00. In this case, the selection interval is 12:00:00 to 12:30:00. At the end of extraction, the pointer is set to 12:30:00. A record - for example, a document- is created at 12:25 but not saved until 12:35. It is not contained in the extracted data but, because of its time stamp, is not extracted the next time either.
For this reason, the safety margin between read and transferred data must always be larger than the maximum length of time that it takes to create a record for this DataSource (with a time stamp delta), or it must display an interval that is sufficiently large (for determining delta using a serial number).
Safety Interval Lower Limit
This field contains the value taken from the highest value of the previous delta extraction to determine the lowest value of the time stamp for the next delta extraction. For example: A time stamp is used to determine a delta. The extracted data is master data: The system only transfers after-images that overwrite the status in the BW. Therefore, a record can be extracted into the BW for such data without any problems.
Taking this into account, the current time stamp can always be used as the upper limit when extracting: The lower limit of the next extraction is not seamlessly joined to the upper limit of the last extraction. Instead, its value is the same as this upper limit minus a safety margin. This safety margin needs to be big enough to contain all values in the extraction which already had a time stamp when the last extraction was carried out but which were not read. Not surprisingly, records can be transferred twice. However, for the reasons above, this is unavoidable.
Extracted Data Delta Type
The system uses the delta type to determine how extracted data is to be interpreted in BW, and into which data targets it can be posted.
A distinction is made between the following:
1. Additive delta
The key figures for extracted data are added up in BW. DataSources with this delta type can supply data to ODS objects and InfoCubes.
2. New status for changed records
Each record to be loaded delivers the new status for the key figures and characteristics. DataSources with this delta type can write to ODS objects or master data tables.
Check also examples in "How to... Create Generic Delta" under www.service.sap.com/bi.
Ciao.
Riccardo.

What is the significance of Safety Upper Limit and Lower Limit

Hello Experts,
I was trying to create a generic datasouce in rso2 , while setting the delta specific field I have selected date field and I need to know the significance of other two input fields provided over there:
Safety Interval Upper Limit.
Safety Interval Lower Limit.
and check box Real Time Enable.
Thanks,
Vijay

Hi Vijay
Safety Interval Upper Limit of Delta Selection This field is used by DataSources that determine their delta generically using a repetitively-increasing field in the extract structure. The field contains the discrepancy between the current maximum when the delta or delta init extraction took place and the data that has actually been read. Leaving the value blank increases the risk that the system could not extract records arising during extraction. Example: A time stamp is used to determine the delta. The time stamp that was last read is 12:00:00. The next delta extraction begins at 12:30:00. In this case, the selection interval is 12:00:00 to 12:30:00. At the end of extraction, the pointer is set to 12:30:00. A record - for example, a document- is created at 12:25 but not saved until 12:35. It is not contained in the extracted data but, because of its time stamp, is not extracted the next time either. For this reason, the safety margin between read and transferred data must always be larger than the maximum length of time that it takes to create a record for this DataSource (with a time stamp delta), or it must display an interval that is sufficiently large (for determining delta using a serial number). Safety Interval Lower Limit This field contains the value taken from the highest value of the previous delta extraction to determine the lowest value of the time stamp for the next delta extraction. For example: A time stamp is used to determine a delta. The extracted data is master data: The system only transfers after-images that overwrite the status in the BW. Therefore, a record can be extracted into the BW for such data without any problems. Taking this into account, the current time stamp can always be used as the upper limit when extracting: The lower limit of the next extraction is not seamlessly joined to the upper limit of the last extraction. Instead, its value is the same as this upper limit minus a safety margin. This safety margin needs to be big enough to contain all values in the extraction which already had a time stamp when the last extraction was carried out but which were not read. Not surprisingly, records can be transferred twice. However, for the reasons above, this is unavoidable. these are used to determining the delta in a datasource: 1. Time stamp - The field is a DEC15 field which always contains the time stamp of the last change to a record in the local time format. 2. Calendar day - The field is a DATS8 field which always contains the day of the last change. 3. Numerical pointer - The field contains another numerical pointer that appears with each new record .
also dwload this How to Generic Delta doc https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/84bf4d68-0601-0010-13b5-b062adbb3e33
2.
You can determine the upper limit of the time. To do this, you specify a time period relative to the current date. The time unit for the time period can be specified in days, weeks, months, quarters, years, posting periods, or fiscal years.
The upper limit can also be rounded down to the end of a time period by selecting another, additional time unit, so that, for example, only complete months or years can be archived when a date field is selected as a selection characteristic for the time slice. The time slice defined in this way contains the complete time period before the upper limit calculated.
1. If delta field is Date (Record Create Date or change date), then use Upper Limit of 1 day.
This will load Delta in BW as of yesterday. Leave Lower limit blank.
2. If delta field is Time Stamp, then use Upper Limit of equal to 1800 Seconds (30 minutes).
This will load Delta in BW as of 30 minutes old. Leave Lower limit blank.
3. If delta field is a Numeric Pointer i.e. generated record # like in GLPCA table, then use
Lower Limit. Use count 10-100. Leave upper limit blank. If value 10 is used then last 10
records will be loaded again. If a record is created when load was running, those records
may get lost. To prevent this situation, lower limit can be used to backup the starting
sequence number. This may result in some records being processed more than once;
therefore, be sure this DataSources is only feeding an ODS Object
Hope this will help you
Thanks & Regards
Kiran

Delta On CALDAY Filed for Generic Data Source

Hi,
I have enabled delta option on CALDAY Field for Generic Data Source.
I thought of giving Safety Interval for Upper Limit as 1 and Safety Interval for Upper Limit as ZERO.Would you please advise me on this, This fetches all delta data?.
Would you please advise me on this.
Thanks and Regards,
K.Krishna Chaitanya.

Hi Krishna,
If your delta enabled field is Date then try this,
Safety Interval Upper Limit Calend. Days
Safety Interval Lower Limit 1 Calend. Days
Then test your delta, will get good result.
I created 4 GDS with this safety interval and working fine for me.
regards,
Kiran

How to set Generic Delta for Generic Datasource

Hi to all,
please can any one explain me the generic Delta option for Generic datasource
after creating generic datasource, i need to set the generic delta .
can any one explain me all generic delta option in simple language with example.
Field Nm
Time samp
calend. Day
Numeric Pointer
Safety Interval Upper Limit
Safety Interval Lower Limit
New status for changed Records
Additive Delta
i shall be thankful to you for this.
Regards
Pavneet Rana

this question has been answered a million times.
search the forum.
M.

Regd Safety Interval Lower Limit for Generic Delta

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