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Welcome to Datavail’s Blog, where you can read the latest insights, tips and opinions of our experts on all things data and technology.


VSAM Demystified

VSAM is used “under the covers” of every DB2 for z/OS page set. VSAM is also used as the storage mechanism by some IMS databases.

Craig Mullins | February 2, 2015

Minimizing Lock Contention Issues

I frequently get e-mails with DB2 questions and I plan to start posting answers to some of the more common ones up here.

Craig Mullins | December 30, 2014

No Black Boxes!

First of all, before I go any further, let’s first define what I mean by a “black box.” If I plan to recommend that you prohibit them we better both understand what it is we are talking about prescribing.

Craig Mullins | December 23, 2014

DB2 Compression: z/OS versus LUW

Data compression for non-mainframe DB2 is quite a bit different than it is for DB2 for z/OS.

Craig Mullins | December 16, 2014

The Aging Mainframer

A continuing, lingering perception that the mainframe is dead continues on in some parts of the IT industry.

Craig Mullins | December 4, 2014

Webinar: Building a Performance Centric Organization

Database performance problems are not caused by magic. Indeed, all performance problems are always caused by change.

Craig Mullins | November 11, 2013
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