HOWTO estimate size of the restoration for flash area given retention time?

Hello

Well, the question is in the topic... Is there a method to give a same rough estimate of the size of storage needed for an undo retention time given?

Of course, in view of the fact that I have a rough idea of the size of the database at a given time and its evolution of the size.

user8768362 wrote:
Hello

Well, the question is in the topic... Is there a method to give a same rough estimate of the size of storage needed for an undo retention time given?

Of course, in view of the fact that I have a rough idea of the size of the database at a given time and its evolution of the size.

I have 47not sure that I have not your question. FRA is based on the size of the database and is usually recommended for twice the size of the db. Whereas the Undo data is stored in the Undo tablespace and here, the calculation of retention Undo is needed to correctly calculate the size of the storage space. To do this, leave, 10 g, there are avilaable Cancel Advisor who can help you in the calculation of the appropriate size. Once again, what is your condition and db version?

HTH
Aman...

Tags: Database

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