July 2004
Intermediate to advanced
384 pages
9h 32m
English
book
Oracle Wait Interface: A Practical Guide to Performance Diagnostics & Tuning
by Richmond Shee, Kirtikumar Deshpande, K Gopalakrishnan
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What’s So Special About Waits in Real Application Clusters (RAC)?
Before we begin discussing wait events in a RAC environment, you need to understand how the buffer cache works in a RAC environment.
In a single database instance environment, there will be only one set of shared memory segments for the database. All I/O operations, SQL processing, and library cache operations are routed through one set of shared memory structures. In other words, the buffer cache and shared pool are local to that particular instance; at any point in time the processes attached to that particular instance will be accessing only one set of memory structures.
However, in the RAC environment, the scenario is entirely different. Multiple instances share the same database. ...
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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.