January 2005
Beginner to intermediate
928 pages
22h 14m
English
book
Understanding DB2®: Learning Visually with Examples
by Raul F. Chong, Clara Liu, Sylvia F. Qi, Dwaine R. Snow
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8.5. Buffer Pools
The database buffer pools are the area where all of the work in a database really happens. All regular data and index keys are read, scanned, updated, inserted, and deleted within the database buffer pools.
The database buffer pool area is a piece of real memory that is used by DB2 to temporarily store (cache) the regular data and index pages when they are read from disk to be scanned or modified. The buffer pool area improves the performance of the database, since the pages can be accessed much more quickly from memory than from disk.
When you connect to a database, the database buffer pools (along with the lock list, database heap, and so on) are allocated in memory. When you (and anyone else using the database) disconnect ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.