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Installing a Local Copy of the IBM DB2 10.5 Documentation

I have written about this before for version 9.7. The IBM DB2 Knowledge Center can be a bit unreliable – sometimes the search doesn’t return the obvious results. Sometimes it’s down entirely at the worst time. And for consultants, sometimes we work on networks that will not allow us to get out to the IBM Knowledge Center. To mitigate, this,...

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PowerShell for DB2 DBAs – Part 1

Any DBAs faced with having to administer and maintain a large number of instances and databases will quickly find themselves swamped with work unless they learn to script most of their workload.  Of course, the benefits of scripting do not end there.  This post is intended to be the first of a planned series with a goal to show how PowerShell...

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Calculating PVUs for IBM DB2 on Linux

DBAs do not have to calculate PVUs(Processor Value Units) often. Many times there is a system administrator or someone else who might do this for us. Or if you’re buying everything from IBM, then they’re likely to calculate it. You may also easily be able to get the information you need from your hardware vendor and skip right to the...

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Analyzing Package Cache Size

Note: updated 7/21 to reflect location of the package cache high water mark in the MON_GET* table functions I have long been a fan of a smaller package cache size, particularly for transaction processing databases. I have seen STMM choose a very large size for the package cache, and this presents several problems: Memory used for the package cache might...

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Architecting High-Availability and Disaster Recovery Solutions with DB2

NOTE: Please do not attempt to architect a high-availability solution without a DB2 expert involved. There are many questions and answers needed beyond those here to make the best decision and ask all the tough questions. High Availability vs. Disaster Recovery High Availability and Disaster Recovery often have different goals and priorities. High Availability can be considered the ability to...

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DB2 Basics: Filesystems for DB2 on Unix and Linux Systems

DB2 doesn’t have any defaults for filesystems because that is an OS-level thing. However, there are a few sanity checks and some recommeded separation when installing DB2 on Linux and UNIX operating systems. These are my best practices for installations, in general terms. Software Location The default location for installing the DB2 code in /opt/ibm/db2/V10.5 (replacing V10.5 with whatever version)....

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Multiple Index Regression Analysis

I actually had a blog entry started on this topic before IDUG. I knew this was possible, but not exactly how to do it. Then I sat in Scott Hayes’ session – D04 – More Sage Advice: Invaluable DB2 LUW Performance Insights from Around the Globe, and he had all the details I needed to really get rolling on trying...