V$RESOURCE vs. V$SYSSTAT sessions current

From: Herring Dave - dherri <Dave.Herring_at_acxiom.com>
Date: Thu, 15 Feb 2007 18:12:38 -0600
Message-ID: <7ED53A68952D3B4C9540B4EFA5C76E3602DB327E@CWYMSX04.Corp.Acxiom.net>

I'm currently trying to gather statistics for capacity planning and I came across a little confusion about the maximum concurrent database connections. Using STATSPACK, I believe there are 2 ways:

Find the max value in STATS$SYSSTAT per day for the statistic 'logons current'.
Find the max value in STATS$RESOURCE_LIMIT per day for the resource_name 'sessions'.

I assumed they'd be relatively close in value yet I'm finding a rather wide difference, with STATS$RESOURCE_LIMIT 'sessions' being -27% to 500%+ different from STATS$SYSSTAT 'logons current'. For reference, 'sessions' limit is showing on average 1000 as the max per day.

Other than the views coming from different X$ objects, I can't account for the large differences, other than I'm way off on my understanding. Does anyone see what I'm doing wrong here?

This is on Oracle 9.2.0.6, TIMED_STATISTICS=TRUE, running on Tru64 5.1.

Thanks.

Dave

David C. Herring, DBA | A c x i o m Delivery Center Organization 630-944-4762 office | 630-430-5988 wireless | 630-944-4989 fax

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Received on Thu Feb 15 2007 - 18:12:38 CST