January 2012
Intermediate to advanced
542 pages
11h 28m
English
Content preview from Oracle Database 11gR2 Performance Tuning CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Tuning the Program Global Area and the User Global Area
In this recipe, we will see the Program Global Area (PGA) and the User Global Area (UGA) and how to tune them for maximum performance.
The PGA is used to store real values of bind variables, sort areas, and cursor state information. In a dedicated server environment this area is in private user memory. Only in a shared-server environment the session stack space remains in the PGA, while session data and cursor state are moved into the shared pool.
How to do it...
The following steps will demonstrate tuning the PGA and UGA:
- Connect to Oracle Enterprise Manager as
SYSDBA. - Go to Advisor Central.
- Choose Memory Advisors.
- Choose the PGA palette to show or change the size of PGA.
- Connect to SQL*Plus as ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.