snapshots problems

From: Nalla Ravi <vvnrk2001_at_yahoo.co.uk>
Date: Wed, 14 Aug 2002 11:13:28 -0800
Message-ID: <F001.004B50F0.20020814111328@fatcity.com>

Hi All,

Can you please kindly clarify the following doubts on snapshots:

 we have got around 50 snapshots to be created on same database from 1 schemas 2 another readonly  majority of these snapshots access same base tables 1) can I refresh them parallely? At a time Howmany can I refresh parallely?
 When I tried to refresh paralley DB hang and refresh time took 4 times more than normal time DO I need to increase the follwoing parameters?

job_queue_interval                   integer 60
job_queue_processes                  integer 4

2) I need a consistent view when I refresh all my 50 snapshots, so total time might take 2 hours, meansm while some other tables might get updated, SO when I want consistent for all my 50 snapshots, can I use set transaction readonly?

Please kindly clarify me

with regards,
John.

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Author: =?iso-8859-1?q?Nalla=20Ravi?=
  INET: vvnrk2001_at_yahoo.co.uk

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