Tuesday, June 15, 2021

Db2 12 for z/OS Function Level 510

I'm a little late with this Db2 function level update, but better late than never, right?

In April 2021, IBM introduced a new function level, FL510, for Db2 12 for z/OS. If you want to take a look at the announcement for it, you can read it here, but there really isn't a lot to it.

Unlike all the other function levels, FL510 does not add any new features or capabilities, nor does it introduce any new changes to the Db2 Catalog. So what does it do?

This function level is basically there to prepare for the next new release of Db2, which will obviously be coming soon, or IBM would not have created this function level for it!  So it is time to start thinking about Db2 Next and getting ready for a new release/version of our favorite DBMS!

But we really haven't answered what FL510 does, have we? It is a housekeeping type of function level. When you activate FL510 it verifies and enforces several pre-migration conditions that have to be met before you can migrate to the next Db2 release. It will make sure that all Db2 12 function levels are activated and that all catalog updates for Db2 12 have been applied. This means that the Db2 catalog level is at the last catalog level for Version 12 and any future migration can therefore proceed.

Additionally, FL510 will check to make sure that your application packages were rebound recently enough to ensure that they are supported by the next Db2 release.

If any of the previous conditions are not met, then the activation of FL510 will fail. You will have to remediate your system and try to activate FL510 again before you can move forward to the new release.

Also, please be aware that FL510 has nothing to do with the fallback SPE that will have to be applied before moving forward with the eventual, new Db2 release. IBM will deliver the fallback SPE in a subsequent APAR at a point in time.

So I guess that this is a boring function level in that it delivers no new functionality... but it is exciting as it is a pre-req for a new  Db2 release that is on the horizon!