January 2012
Intermediate to advanced
542 pages
11h 28m
English
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Troubleshooting temporary tablespaces
At the beginning of this chapter, we saw that sorts may occur in memory or on disk, and that in-memory sorts are faster than on-disk ones because fewer I/O operations are involved.
However, system memory is finite and cannot expand the sort area above the limits of the physical memory available. If sorts exceed the sort area, it's better to use on-disk sort than over allocating memory—ending in very slow pagination (swap to disk managed by the host Operating System).
On-disk sort operations require space to save sort runs, which cannot be stored in memory. Oracle uses sort segments to store this type of information on disk.
In this recipe, we will see how to configure temporary tablespaces to speed up on-disk ...
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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.