Posted on 1/11/2016
@srhayes :: @db2performance | Special Guest: Scott Hayes, DBI SoftwareSage DB2 LUW Performance Advice
Advanced Index Benefit Analysis
BLU Table Convert Row to Column Analysis 100% of our audience learned something! In Sage Advice Part 1 during Episode #142, Scott teaches audiences how to find the biggest problems in DB2 based on weights. In Sage Advice Part 2 during this Episode, Scott teaches audiences how to accurately determine the benefit of each index recommended by IBM program "db2advis ". As a bonus, if you are using DB2 10.5, Scott provides a methodology and queries for quickly and easily determining if a Row based table should be converted to BLU Column based. Sage Advice Part 3 "Predictive Index Impact Analysis " will be offered at IDUG conferences in 2016 - hope to see you in AUSTIN Texas at IDUG! Watch and learn... |
Show Host Scott Hayes CommentaryAccording to our polling questions, most DBAs have seen IBM program "db2advis " recommend multiple indexes for a solution. Also, when multiple indexes are recommended, most DBAs spend 30 to 240 minutes agonizing over which of the indexes are the most valuable or important. As you'll see in this presentation, and as you've probably experienced, the "benefit " XML tag in the db2advis output is either misleading, inaccurate, or grossly wrong. During this presentation, you will learn the correct way to calculate the value of each recommended index via two methods: index addition and index subtraction. After seeing this presentation at IDUG North America in Philadelphia 2015, my dear friend Ember Crooks wasted no time testing these index analysis methods and then blogging about them. Ember has saved me a lot of typing time, so be sure to check her blog post for more details in addition to the video replays and PDF materials provided below. Congratulations!Everyone that Attended today's show won a $10 Amazon.com gift card! Of course, you had to join the webinar on time to hear Scott disclose the secret prize word "AUSTIN ". It's true - Education does PAY - especially on The DB2Night Show! Like learning about IBM DB2 LUW?These upcoming events might interest you!
A message from our sponsor:
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Join The DB2Night Show™ LinkedIn GroupThe DB2Night Show™ has a LinkedIn Group. The "closed " group is open to any LinkedIn member. Join to receive LinkedIn group updates includingfuture shows and replay information, and, if you like, start some discussions about the show! Join The DB2Night Show LinkedIn Group! Get the Download ReplaysWMV Format - approximately 65MBTo download a recorded replay of Episode #168 in WMV format, right click on the link below and choose "Save As... "
Episode #168, 8 January 2016, DB2 LUW Sage Advice Part 2: Advanced Index Benefit Analysis with host and guest Scott Hayes! MP4 Format - standard resolution - 165MBHave an iLife, iDevice, iPod, iPad, or iPhone? Right click and download the MP4 ( M4V ) format! BONUS! PDF Handout!A PDF handout is provided as reference material so that you can copy and paste many of the SQL commands. The PDF, alone, is not a substitute for what you will learn by watching the video replays. If you PROMISE to watch the video replays, then you are granted permission to CLICK HERE for the PDF. Did you learn something from this show?Share a great show with your friends and followers!
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