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How delta repeat works?

Hello,

I have went through many posts regarding delta queue and delta repeat. I was trying out an example and got the below doubts.

I had read in some documents that when a new delta comes, the old "Delta Repeat" data will be overwritten? Is it true?

In my sample data load, there was some 10 delta records available in delta queue and the same was available in delta repeat. I triggered the infopackage with "delta update" and after that I can see that the "Delta update" is 0 and "Delta Repeat" is having those 10 records. Later new 5 records were created in ECC system, and after running the V3 jobs, I could see the newly created 5 records in "Delta Update", but in "Delta Repeat" i could see the old 10 records + new 5 records.

1. So, when the "Delta Repeat" will be cleared?

2. If my delta fails in the next delta load and if I use my "Delta Repeat" to retrieve my failed delta, will the previously loaded 10 records also be again updated to BW ?

Thanks

Renjith

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6 Answers

  • avatar image
    Former Member
    Oct 27, 2016 at 10:05 AM

    Hi Renju,

    As per BW system info package last running time will stored in ECC6 system in delta place.

    once run successfully info package after repeat place will clear the delta store.

    if delta failed in Bw system delta records stored in Repeat delta place.

    Thank,

    Ram

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    Former Member
    Oct 25, 2016 at 09:15 PM

    1. If you run twice infopackage it will clear the Delta Repeat data .

    2. It retrieve latest failed request data from Delta Repeat .In your case if you run the infopackage again you will get 5 records in PSA and you will see only 5 records in Delta repeat.

    Thanks,

    Sudhakar

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    Former Member
    Oct 26, 2016 at 08:44 AM

    Hi,

    1. When you run delta info pack twice, your delta will be zeroed at RSA7.

    2. if latest delta fails then, run the repeat delta, it will bring 5 records and latest delta as well which is changed/created at source side.

    Thanks

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  • Oct 28, 2016 at 06:51 AM

    Hi Renjith,

    As I've learned the Delta Datamanagement, this is a very complex mechanism that has to be considered when starting data modelling.

    The Delta is stored in a DQ and there are many System paramateres (which depend on the source e.g. DataSource) to consider. Just have a look at the Tables RSDS (for 7.x DS) or RSOLTPSOURCE (for 3.x DS) in SE16. Look at column DELTA and hit F1-help in datafield for details.

    After that also have a look at ROOSOURCE for columns DELTA and ZDD_ABLE. The table RODELTAM provides Information about the types of update mechanism in General.

    Hope this is helpful, reward if helpful :)
    Julian

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    Former Member
    Oct 28, 2016 at 09:33 AM

    1st run---- delta update ---------- delta repeat -------- ip

    10 10

    trigger ip 0 10 10

    2nd run 5 10 + 5

    trigger ip 0 5 5 (if successful load)

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    Former Member
    Oct 28, 2016 at 09:51 AM
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