Re: ORA-01555 on source database for materialized view refresh across link

Mladen Gogala wrote:

> Contrary to the popular opinion, size does matter. If you set
> UNDO_RETENTION to 3 days, Oracle will try protecting undo blocks
> for 3 days before allowing you to reuse them. In order for that
> war on ORA-1555 to succeed, you must have enough fresh blocks so
> that the previously used blocks are kept in the frig for 3 days.
> That's how size comes into the play.

I meant just for testing purposes to see if it eliminates the problem. Certainly there would be an impact in just making it larger without any other thought.

-- 
Daniel A. Morgan
http://www.psoug.org
damorgan_at_x.washington.edu
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