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Difference between COPA and Logistic Delta Mechanisam

Dear All,

May i knw the difference between the COPA and Logistic Delta Mechanisam h it works.

In our Production system, when ever a logistic delta fails we take action and repeat it then it will featch the delta on the same day,

where as in COPA delta, when it fails we take action and when we repeat it will fetch zero records and in the next day the delta will come.

What is the difference in both

What exactly is happeing in R/3 for these both delta mechanisam.

Thanks in advance,

K Janardhan Kumar

Former Member
Former Member replied

Hi Janardhan,

I hope with all these explanations you would have got a good idea about COPA Vs LO.

Just wanted to adda point, for COPA as u mentioned when it fails we take action and when we repeat it will fetch zero records and in the next day the delta will come.

The reason for this is every COPA Datasource extraction puts a lock on CESVB structure and sometimes fails to remove that lock once the structure is copied and used.

So the next COPA data source extraction fails in BW giving an error Error Due to lock in Source System.

This problem is due to a looping problem in Function Module (in BW 3.x) RKE_BIW_DATA_TIMESTMP_GET where in it tries to try 2 times to set a lock on CESVB and if CESVB is locked it fails the delta in BW.

Using Transaction KEB2 in SAP R/3 you can see how many times this happened for your datasource.

The good thing about all this error is that extractor is not called hence you dont loose delta.

And next day when system deletes the lock (hopefully), you get your delta records back.

How it clears.

Thanks

CK

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