Monday, November 30, 2015

DB2 for z/OS: How I Use -DISPLAY GROUPBUFFERPOOL Output

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Having recently posted a blog entry on my use of output from the DB2 for z/OS -DISPLAY BUFFERPOOL command , it seems a good time to post a c...
Sunday, November 29, 2015

DB2 for z/OS: How I Use -DISPLAY BUFFERPOOL Output

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A couple of weeks ago, I was going over output of the DB2 for z/OS command -DISPLAY BUFFERPOOL with a group of people, and one of the meetin...
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Thursday, October 29, 2015

DB2 for z/OS: DDF and Accounting Trace Records

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I recently encountered a situation that served to illuminate a number of important aspects of application processing in the context of the D...
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Tuesday, October 20, 2015

DB2 for z/OS: Getting a Handle on a CPU-Constrained Environment

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z/OS systems are famous for their reliability, and part of that story is the ability of z/OS to accommodate surges of application activity: ...
Tuesday, September 29, 2015

An Oft-Overlooked DB2 for z/OS Big Memory Exploitation Play

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Over the past few years, I've done a lot of writing and presenting and talking about ways in which large-scale z Systems memory resource...
Sunday, September 27, 2015

I Don't Worry About DB2 for z/OS Buffer Pool Hit Ratios

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And neither should you. It's true that for years, mine was among a chorus of DB2 specialists' voices that placed a lot of emphasis...
Monday, August 31, 2015

DB2 for z/OS: Which Buffer Pools Should You Page-Fix?

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A few days ago, I delivered a presentation on DB2 for z/OS performance monitoring and tuning for the DBA team at a large financial instituti...
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