How many days we can store the data  in psa & ods ?

hi guru's
how many days we can store the data  in psa & ods ?
Thanks & Regards.
Prabhakarreddy

Hi Prabhakarreddy,
As many days as you like:
In the PSA you can keep data as long as you like but you will need more and more disk-space. So its advisable to clean up from time to time.
Example:
PSA's from full loads Clean up in a weeks time,
PSA's from Deltas: Clean up after you are sure data is correct. (e.g. a month or 90 days)
Remember that you cannot do a reconstruction from dataloads of which you have deleted the PSA. If some thing is wrong you will have to do an Init again!
In ODS's you must keep data in order to keep your delta loads to cubes in order. Removing data will force you to do a new initial load.
Sometime companies delete old data form ODS's that is older than a certain period (e.g. more than 3 years old) by running a selective deletion. You will have to do an init again. But loads and activation may run faster and of course you gain on disk space.
Udo

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