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Question and Answer

Connor McDonald

Thanks for the question.

Asked: June 29, 2017 - 10:34 am UTC

Last updated: June 30, 2017 - 4:28 am UTC

Version: 11g

Viewed 1000+ times

You Asked

Hi,

We have Archival DB which holds historical application data.
Weekly basis data from Primary DB gets copied to Archival DB Partition tables.

Do I need to perform any activities post data movement in Partition table like Gather Table/Index Stats or Rebuild Index or Shrink options?

and Connor said...

"like Gather Table/Index Stats"

Possibly.

You *might* have the automatic stats job running nightly - so that might take care of it for you.
You *might* need to do the stats before that, because you want clean stats immediately after you perform the operation.

"Rebuild Index"

Possibly.

You *might* have done a truncate and made some or all portions of indexes unusable.
You *might* have done a delete and the indexes are of a form so that space will not be reused by subsequent data.

"Shrink"

Possibly.

You *might* not be planning on using the freed up space ever again
You *might* not have compression
You *might* need to reclaim from datafiles
You *might* have only index access and thus a shrink offers very little.

As you can see... it's not a yes or no answer really. It's about understanding the concept and then mapping that to the usage particular to your system.


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