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Robert Catterall
Follow /27 Oct 2017 at 7:49pm / IBM DB2 Blog

Db2 12 for z/OS: Enhanced Lock Avoidance in Data Sharing Environments

In the last entry posted to this blog , I described the mechanisms (including PUNC bits and commit log sequence numbers, aka CLSNs) used by Db2 for z/OS for lock avoidance purposes (lock avoidance here refers to a capability whereby Db2 can, in many cases...
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Robert Catterall
Follow /30 Sep 2017 at 5:02am / IBM DB2 Blog

Db2 for z/OS: Lock Avoidance

Not long ago, I served as part of the teach team for a Db2 12 for z/OS Technology Workshop that IBM offered in a city in the USA. During that workshop, I covered, among other things, a Db2 12 enhancement that can improve the CPU efficiency of a Db2 data...
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Robert Catterall
Follow /31 Aug 2017 at 4:27am / IBM DB2 Blog

Db2 12 for z/OS SQL Enhancements: Advanced Triggers

In this, the fourth of a set of four entries covering SQL enhancements introduced with Db2 12 for z/OS, I will describe new trigger capabilities delivered by way of what are called "advanced triggers" (the kind of trigger that you could define...
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Ondrej.Zizka
Follow /21 Aug 2017 at 6:24pm / IBM DB2 Blog

Configure IBM Db2 LUW v11.1 for SSL connections (self-signed certificate)

In this topic, I would like to cover the base instance configuration of Db2 v11.1 to enable SSL connections from clients. In most situations, databases are accessed over a restricted network, but in some cases, it is necessary to allow access from an...
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Robert Catterall
Follow /18 Aug 2017 at 5:22am / IBM DB2 Blog

Db2 12 for z/OS SQL Enhancements: a Better MERGE

Greetings, and welcome to the third in a series of entries covering my favorite Db2 12 for z/OS SQL enhancements. The first two posts in the series described piece-wise DELETE and result set pagination . This entry focuses on the new and very much improved...
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