October 2010
Intermediate to advanced
1008 pages
46h 16m
English
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Understanding Operating Modes
There are essentially three operating modes for database mirroring, as follows:
• High-safety mode (synchronous)— After a database mirroring session is initiated under high-safety mode, the mirror server database synchronizes with the principal server database and then writes the logs to disk. After the logs have been written to disk, all transactions are committed on both servers. Although this mode guarantees no data loss between the two servers, it does come with the expense of increased transaction latency.
• High-availability mode (synchronous)— Also referred to as high-safety mode with automatic failover, this operating mode is made available only with the presence of a witness server. This mode is the recommended ...
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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.