This update is the last update for the great RHEL 5 and the support will finally end in March 2017 (see life cycle page from Red Hat). Even though this seems to be far away right now, please mark your calendars for migration planning!
From a System z perspective this is a pure bug fix release. No new features have been added.
After a long development phase Red Hat has finally announced the next major release of their enterprise distribution. Everything is new and updated, so it will take time to get familiar with the new distribution.
The kernel level of the GA version is kernel-3.10.0-123, however as this is a new release I strongly recommend everyone to apply the updates from Red Hat to get the bug fixes that didn't make the DVD! As of 7/4 the latest update kernel is kernel-3.10.0-123.4.
Here is my usual summary of links to more information:
A recent System z microcode update for the OSA cards in zEC12 / zBC12 may require an adaptation of the bonding setup in Linux. If you are using Linux bonding in active_backup mode and you are using the same MAC address for all the slaves (fail_over_mac=0 or not specified) and your are on the lastest machines you probably want to check if you need to change your setup.
You can find the complete details in the restriction list on Developerworks.
The Request for Enhancement (RFE) community has been used for IBM Software products for a while. Now also the Systems and Systems Software including Linux on System z and z/VM have been included there. Up to now requirements have only been discussed internally - this is now open to everyone with an IBM ID. In my opinion this is really good.
This community is meant for submitting and discussing requirements and feature requests for specific products. In the community please select "Linux on System z" for zLinux requirements and "z/VM" for z/VM requirements.
Also feel free to comment and vote for already existing requirements!
Who is going to submit the first one in the categories?
IBM has launched a beta program for a new compiler for Linux on System z. If you've been working with IBM platforms you may already know the xlc compiler. This compiler is now also available as a beta for Linux on System z as well.
Interested customers and software vendors should register for it at this registration link (free IBM ID required).
The key difference to the gcc included in the distributions is that this compiler is independent of the distribution. So as a software developer you can use this compiler and more important the generated binaries on all the supported Linux distribution. By that you can get improvements like zEC12 exploitation earlier than waiting for the next gcc in a distribution.
And my personal hope is that the performance will also be good as well. We will know this when the compiler is generally available.
Oracle has released the new 12cR1 version of their database for Linux on System z. With the appropriate license you can download it from Oracle. There is a also a blog entry in the Oracle blog. For more details see this IBM Flash.
The Redbook "Experiences with Oracle Database 12c Release 1 on Linux on System z" is a "must read" if you want to start with Oracle 12c on System z.
In the IBM Germany Lab in Boeblingen there has been a class called "Oracle Bootcamp". The presentations can be downloaded here.