Latest Articles
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. As explained last week, I/O operation is now synchronous to CPU with zHyperLink and SQL processing spins while waiting for the I/O to complete. At the same...
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 of wait time in database read and log write I/Os. zHyperLink is introduced to help reduce b2 transaction latency. zHyperLink is a new short...
It’s always good to chat, especially with your mainframe
For years now, major enterprises – including banks, airlines and insurance companies the world over – have remained faithful to the mainframe to run their core business systems. No surprise, as we all know it remains one of the most dependable, secure and hard-working...
What is the value of mainframe logs?
Mainframe logs offer essential insight into how to manage and adapt your z/OS environment. So why aren’t mainframe managers leveraging logs in their day-to-day IT management? Performance data is usually split among several applications and consists of highly...
50 Years ago in Mainframe Computing
How many computer platforms could justify a headline like that!? Well, it has been almost 50 years since NASA landed a man on the moon, and brought him safely back to Earth, as directed by President John F. Kennedy in his now famous speech to Congress in May of 1961....
Mainframe Pricing: Endgame
IBM Simplifying Mainframe Software Pricing When you hear the words mainframe software pricing, what do you think of? A common reaction is to ignore it unless you are actively negotiating a new contract with IBM. And even then, the general consensus is that it is...
Breach recovery – the fast and the furious!
Your organization has had a data breach. You’ve managed to confirm that it’s not a false alarm, it really is an issue. And now you need to recover from it. What do you do? The US Commerce Department’s National Institute of Standards and Technology (NIST) has produced...
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 the buffer pool configuration in their production Db2 environment (the overall size of the buffer pool configuration was increased to reduce read I/O activity,...
Mainframe News Out There
Once a month we like to pick blog articles from other sources that we feel are interesting enough to talk about on the Planet Mainframe blog. Here are this month’s picks: A wake-up call Another interesting article from Planet Mainframe contributor Trevor Eddolls on...
Lost in translation? Why mainframers and non-mainframers need to communicate
In today’s connected world and with security high on the agenda, IT people across the enterprise have to understand each other. Mainframers need to be able to talk to non-mainframers with clarity, and vice-versa. Managers in the enterprise need to understand both...
