Wednesday Jul 04, 2012

Oracle Linux 6.3 has been released

We're happy to announce the availability of Oracle Linux 6.3, the third update release for Oracle Linux 6. ISO images can now be obtained from the Oracle Software Delivery Cloud, the individual RPM packages have already been published from our public yum repository. This distribution now includes the Unbreakable Enterprise Kernel Release 2 (2.6.39-200), Oracle's recommended kernel version for Oracle Linux. For further details, please see the Oracle Linux 6.3 Release Notes.

Remember, Oracle Linux can be downloaded, used and distributed free of charge, updates and errata are freely available. For support, you are free to decide for which of your systems you want to obtain a support subscription, and at which level each of  them should be supported. This makes Oracle Linux an ideal choice for both your development and production systems - you decide which support coverage is the best for each of your systems individually, while keeping all of them up-to-date and secure.

Wim Coekaerts recently wrote several blog posts about the benefits of Oracle Linux, which are worth a read:

Thursday Apr 05, 2012

DTrace for Oracle Linux news: new beta release and conference appearances

A new set of RPM packages of our port of DTrace for Linux has just been published on the Unbreakable Linux Network. This is another beta release of our ongoing development effort to bring the DTrace framework to Linux.

This release includes the following changes:

  • The packages are now based on the final public release of the Unbreakable Enterprise Kernel Release 2 (2.6.39). The previous beta drop was based on a development version of the 2.6.39 kernel; there is no new functionality specific to DTrace in this release. The primary goal was to get the code base in sync with the released kernel version.
  • Based on the feedback we received from some users in how their applications interact with dtrace, libdtrace is now a shared library. However, the API/ABI is not fully stabilized yet and may be subject to change.
  • As a result of the ongoing QA testing, some test cases were reorganized into their own subdirectories, which allows running the test suite in a more fine-grained manner.

As reminder, we have a dedicated Forum for DTrace on Linux, to discuss your experiences with this release.

This week, the Linux DTrace team also attendeded the second dtrace.conf in San Francisco, to talk about their work. The sessions were streamed live and recordings are also available. You can watch Oracle's Kris Van Hees' talk below:


Video streaming by Ustream

We would like to thank the dtrace.conf organizers for the speaking opportunity and for organizing this event!

This Wednesday (April 4th), Kris and Elena Zannoni also spoke on this topic at the Linux Foundation Collaboration Summit 2012 in San Francisco, CA. The slides are now available for download (PDF).

Thursday Mar 22, 2012

Free Updates and Errata for Oracle Linux

ISO images of the Oracle Linux installation media as well as individual binary RPMs (and the sources) of major and minor releases (Updates) have always been freely available for download, use and distribution, ever since we started the Oracle Linux support program.

We're now taking this a step further: in addition to the above, we will now also provide updated packages or errata for free from separate yum repositories on http://public-yum.oracle.com. If you would like to keep your Oracle Linux system up to date, you can now do so by subscribing your system to the respective "_latest" repository for your distribution, e.g. "ol6_latest" for Oracle Linux 6. See the installation instructions on the public yum front page and the "How to subscribe to the free Oracle Linux errata yum repositories" article on the OTN Garage blog for details on how enable these repositories and to obtain the updates.

If you would like to also receive free updates to the Unbreakable Enterprise Kernel Release 2, make sure to enable the "[ol6_UEK_latest]" repository as well - updates to the kernel will be made available from this separate channel until it is included in the next set of installation media.

Now what does this mean for Oracle Network Support? Getting access to the updates and errata was just one part of the offering – the following benefits will be available with an Oracle Linux Support Subscription only:

Wim also published a blog post with his take on the announcement.

Saturday Mar 03, 2012

Oracle Linux 5.8 has been released

We're happy to announce the general availability of Oracle Linux 5 Update 8. RPM packages for direct installation/upgrade are available for Oracle Linux Support Customers from the Unbreakable Linux Network. Individual packages of the initial release are also available for download from our public yum repository. ISO installation images of the distribution will be made available for download from the Oracle Software Delivery Cloud (aka E-Delivery) shortly or look for external mirror sites. If you require ISO images before they are available from there, please request these via a Metalink service request or log into My Oracle Support and search for patch 13801642.

This distribution includes the latest release of the Unbreakable Enterprise Kernel Release 1 (version 2.6.32-300.10.1, based on mainline Linux 2.6.32), which includes a number of important bug fixes and driver updates. Please see the release notes for a detailed list of changes and improvements.

Friday Feb 24, 2012

Updated Unbreakable Enterprise Kernel Release candidate packages now available

A new build of the Unbreakable Enterprise Kernel release 2 has been published today: version 2.6.39-100.1.1 of the kernel including updated userspace utilities have been uploaded. They are now available for testing from the Unbreakable Linux Network as well as the beta channel on our public yum server. There have been a lot of fixes and improvements to the Btrfs file system in particular, as well as driver updates. The public git source repository has also been refreshed.

As we're nearing the final release of the Unbreakable Enterprise Kernel Release 2, we welcome your testing and feedback. We have created a dedicated Oracle Linux and UEK beta testing forum for this purpose - please join the discussions and share your experiences with this kernel build! Thank you.

Wednesday Feb 22, 2012

New beta release of DTrace for Oracle Linux

We have just published an updated set of RPM packages of DTrace for Linux on the Unbreakable Linux Network. This beta release of our ongoing development effort to bring the DTrace frame work to Linux is now based on the current Unbreakable Enterprise Kernel Release 2 (2.6.39) and includes a number of improvements and new functionality:

New features:

  • The SDT (Statically Defined Tracing) provider is implemented, providing in-kernel static probes. Some of the proc provider is implemented using this facility.

Bugfixes:

  • Syscall tracing of stub-based syscalls (such as fork, clone, exit, and sigreturn) now works.
  • Invalid memory accesses inside D scripts no longer cause oopses or panics.
  • Memory exhaustion inside D scripts no longer emits spurious oopses.
  • Several crash fixes.
  • Fixes to arithmetic inside aggregations, fixing quantize().
  • Improvements to the installed headers.

To get started, take a look at Wim's latest blog post about using DTrace on Oracle Linux. 

The DTrace port is work in progress and is still considered a "technology preview" - the usual disclaimers apply. We have created a dedicated DTrace on Linux forum where you can share your experiences with the Linux version and give feedback to us. We look forward to your comments!

Friday Jan 06, 2012

New beta drop of the Unbreakable Enterprise Kernel Release 2

We've published a new beta release of the Unbreakable Enterprise Linux (Release 2). The package version is kernel-uek-2.6.39-100.0.18 and is now available for both Oracle Linux 5 and 6 (64bit only).

If you're already subscribed to the UEK2 beta repository, you can simply run "yum update" to obtain the latest bits. Otherwise simply follow the instructions outlined on that page to enable this yum repository and install the updated kernel RPMs.

Some of the notable changes in this release in comparison to the first beta:

  • Updated code base from mainline Linux 3.0.6 to 3.0.13
  • Numerous Btrfs updates/fixes
  • iSCSI updates/fixes
  • Added/updated device drivers (be2iscsi, be2net, lpfc, mlx4_en, mpt2sas, netxen_nic, oracleasm, qla2xxx, qla4xxx, qlnic)
  • Xen updates
  • Lots of bug fixes

You can clone or browse our public git source tree for more details on the changes that have been made.

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