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  • Delayed Durability–I start to like it!

    In my previous post about the subject I’ve complained that according to BOL, this feature is enabled for Hekaton only. Panagiotis Antonopoulos from Microsoft commented that actually BOL is wrong – delayed durability can be used with all sorts of transactions, not just In-Memory ones. There is a database-level setting for delayed durability: ...
    Posted to Michael Zilberstein (Weblog) by mz1313 on November 5, 2013
  • SQL Server 2014 – delayed transaction durability

    As I’m downloading SQL Server 2014 CTP2 at this very moment, I’ve noticed new fascinating feature that hadn’t been announced in CTP1: delayed transaction durability. It means that if your system is heavy on writes and on another hand you can tolerate data loss on some rare occasions – you can consider declaring transaction as DELAYED_DURABILITY = ...
    Posted to Michael Zilberstein (Weblog) by mz1313 on October 16, 2013
  • Geek City: What Triggered This Post?

    I’d really like to get another post up onto my much neglected blog before the end of 2012. This will also start one of my New Year’s resolutions, which is to write at least one blog post a month. I’m going to tell you about a change in SQL Server that wasn’t announced in any “What’s New” list that I ever saw, perhaps because it was just a chance ...
    Posted to Kalen Delaney (Weblog) by Kalen Delaney on December 31, 2012
  • Page splits, extended events, index page allocation and all the fish

    2 years ago I wrote about monitoring page splits with Extended Events. Only 2 bloggers explored Extended Events feature at that time, so my post was more of a learning than for any practical matter. Yet one question remained open: according to straightforward calculations, after 3 splits of the first page, next split should have occurred on ...
    Posted to Michael Zilberstein (Weblog) by mz1313 on April 25, 2011
  • Geek City: What gets logged for SELECT INTO operations?

    Last week, I wrote about logging for index rebuild operations.  I wanted to publish the result of that testing as soon as I could, because that dealt with a specific question I was trying to answer. However, I actually started out my testing by looking at the logging that was done for a different operation, and ended up generating some new ...
    Posted to Kalen Delaney (Weblog) by Kalen Delaney on March 15, 2011
  • Geek City: What gets logged for index rebuild operations?

    This blog post was inspired by a question from a future student. Someone who was already booked for my SQL Server Internals class in June asked for some information on a current problem he was having with transaction log writes causing excessive wait times during index rebuild operations when run in ONLINE mode. He wanted to know if switching to ...
    Posted to Kalen Delaney (Weblog) by Kalen Delaney on March 8, 2011
  • Geek City: Exploring the Transaction Log Structure

    As I mentioned last October, my PASS preconference seminar was a whole day about the transaction log. I told the attendees all kinds of things about the structure of the log, and told them about one of the best tools for exploring the structure: the command DBCC LOGINFO. This command is officially undocumented, but numerous bloggers have discussed ...
    Posted to Kalen Delaney (Weblog) by Kalen Delaney on December 21, 2009
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