Fixing DB2 data for A Given table using Batch Program
Batch programming is a very powerful process which helps process Millions of record from a input data source. An Input…
Ill winds: Why Mainframe Security Should be Heading Your 2021 Priorities List
It’s an ill wind that blows no good, and profits nobody. That old nautical phrase popped into my head when…
Application Architecture: an Evolutionary View
The Mainframe Era In 1970 I joined a company, Databank Systems Ltd, that operated a national network of 6 computer…
Lightning Fast I/O via zHyperLink and Db2 for z/OS Exploitation – Part 2
Last week we ended with Db2 Performance of zHyperLink Read. Now let’s look at the CPU cost of zHyperLink read.…
Lightning Fast I/O via zHyperLink and Db2 for z/OS Exploitation
As the size of database and the volume of transactions increase, many of Db2 transactions tend to spend significant amount…
A Case Study: Measuring the Impact of Db2 for z/OS Buffer Pool Changes
Not long ago, a Db2 for z/OS administrator contacted me with a request. His team had made some changes to…
Fast Mainframe Data Access – Apples and Oranges
In a growing economy, increases in expected business workloads are making their impacts felt in today’s busiest data centers, through…
Mainframe Upgrades – They Happen
System upgrades are a fact of life. If you’re running a mainframe system, you’re doing it for a good reason—and…