IBM Db2 12 for z/OS Function Level Activation and Management
This technical paper follows on from an IBM Gold Consultants survey of business strategies for handling CI/CD in Db2 for z/OS, and in particular for advancing Function Levels.
Subject: Advancing Db2 12 for z/OS Function Levels safely.
Target audience: Executive-level decision makers and Db2 for z/OS system administrators.
Db2 12 z/OS represents a significant change in the way new features and functions are delivered with the introduction of continuous delivery: new features are introduced in the maintenance stream; and the activation of those new features is user-scheduled.
Db2 12 for z/OS has built on the capability introduced in Db2 11 to separate system migration from application migration using Application Compatibility, where application migration is under user control. It can be delayed until after system migration and scheduled on an application-by-application basis.
However, some users are still concerned about managing the introduction of new features and functions, particularly system-level features; for them, it is imperative that this be done without impacting the production service.
This IIBM Gold Consultants Technical Paper on Function Level activation with Db2 12 for z/OS continuous delivery is aimed at exactly that audience, and in particular it is targeted at decision makers and executives responsible for the production service. It describes how to turn off those features, and provides detailed guidance on eliminating or managing the impact of any incompatible or unavoidable changes even when advancing function levels. This allows Db2 customers to position themselves for the next release of Db2 for z/OS, which requires that the latest Db2 12 function level be activated before starting the migration process.