Wednesday Jun 27, 2012
Wednesday Jun 13, 2012
By Sergio on Jun 13, 2012
If you run Oracle products on Oracle Linux 6 (or RHEL 6) on Intel-based hardware that supports the Intel Advanced Vector Extensions (AVX), you may encounter illegal instruction errors (SIGILL) that prevent the correct operation of Oracle Database, Fusion Middleware and other applications (both Oracle and third party applications). It is recommended you install this glibc bug fix update: ELBA-2012-2019.
To verify whether your system supports AVX, look for avx in the output of:
# cat /proc/cpuinfoThe updated glibc RPM is available from ULN and from public-yum.oracle.com. For more information, see this Oracle Linux Errata notification: ELBA-2012-2019 Oracle Linux 6 glibc bug fix update. To subscribe to Oracle Linux errata notifications via email, go here. You can also stay on top of Oracle Linux errata via Twitter: @orcl_uln
Thursday Apr 05, 2012
By Lenz Grimmer on Apr 05, 2012
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:
We would like to thank the dtrace.conf organizers for the speaking opportunity and for organizing this event!
Thursday Mar 29, 2012
By Lenz Grimmer on Mar 29, 2012
Now that the certification of the Oracle Database 11g R2 with Oracle Linux 6 and the Unbreakable Enterprise Kernel has been announced, we are glad to announce the availability of
oracle-rdbms-server-11gR2-preinstall, the Oracle RDBMS Server 11gR2 Pre-install RPM package (formerly known as
oracle-validated). Designed specifically for Oracle Linux 6, this RPM aids in the installation of the Oracle Database.
In order to install the Oracle Database 11g R2 on Oracle Linux 6, your system needs to meet a few prerequisites, as outlined in the Linux Installation Guides. Using the Oracle RDBMS Server 11gR2 Pre-install RPM, you can complete most of the pre-installation configuration tasks. which is now available from the Unbreakable Linux Network, or via the Oracle public yum repository.
The pre-install package is available for x86_64 only. Specifically, the package:
- Causes the download and installation of various software packages and specific versions needed for database installation, with package dependencies resolved via
- Creates the user
oracleand the groups
dba, which are the defaults used during database installation
- Modifies kernel parameters in
/etc/sysctl.confto change settings for shared memory, semaphores, the maximum number of file descriptors, and so on
- Sets hard and soft shell resource limits in
/etc/security/limits.conf, such as the number of open files, the number of processes, and stack size to the minimum required based on the Oracle Database 11g Release 2 Server installation requirements
numa=offin the kernel boot parameters for x86_64 machines
oracle-validated" package, the steps for Oracle Linux 6 are still very similar (we're looking into updating that article for Oracle Linux 6).
Friday Mar 23, 2012
By Monica Kumar on Mar 23, 2012
Yesterday we announced the certification of Oracle Database 11g R2 with Oracle Linux 6 and Unbreakable Enterprise Kernel. Here are the key highlights:
- Oracle Database 11g Release 2 (R2) and Oracle Fusion Middleware 11g Release 1 (R1) are immediately available on Oracle Linux 6 with the Unbreakable Enterprise Kernel.
- Oracle Database 11g R2 and Oracle Fusion Middleware 11g R1 will be available on Red Hat Enterprise Linux 6 (RHEL6) and Oracle Linux 6 with the Red Hat Compatible Kernel in 90 days.
- Oracle offers direct Linux support to customers running RHEL6, Oracle Linux 6, or a combination of both.
- Oracle Linux will continue to maintain compatibility with Red Hat Linux.
Thursday Mar 22, 2012
By Lenz Grimmer on Mar 22, 2012
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:
- Full indemnification against intellectual property claims.
- Use of base functionality in Enterprise Manager 12c for Linux and Enterprise Manager OpsCenter for provisioning, patching, management and monitoring of Oracle Linux
- Access to additional software channels on the Unbreakable Linux Network (ULN) (e.g. DTrace beta releases or ASMLib support packages)
Wim also published a blog post with his take on the announcement.
Tuesday Mar 13, 2012
By Lenz Grimmer on Mar 13, 2012
We’re proud to announce the availability of a major enhancement to Oracle Linux: Unbreakable Enterprise Kernel Release 2 (2.6.39) has been released! The RPM packages are now available from the Unbreakable Linux Network and the public yum repositories. This kernel can be installed on both Oracle Linux 5.8 and newer as well as Oracle Linux 6.2 and newer. By simply updating the Unbreakable Enterprise Kernel, Oracle Linux customers can benefit from the latest improvements that have taken place in mainline Linux, without having to re-install their distribution or applications.
This release includes many new features as well as numerous performance and scalability improvements that were added to mainline Linux since the first Unbreakable Enterprise Kernel release (which is based on Linux 2.6.32). Despite the version number, the Unbreakable Enterprise Kernel Release 2 is based on mainline Linux 3.0.16 and includes a few selected patches from other mainline Linux versions. The source code is available from this public git source code repository.
Some key highlights in this release include:
- Btrfs file system
- Performance and scalability improvements
- Virtualization improvements
- Transparent Huge Pages and Memory compaction
- Cgroups improvements
- Linux Containers
- OCFS2 improvements
- Updated Device Drivers
For more information, please see the Unbreakable Enterprise Kernel Release 2 features and benefits document and consult the release notes for more For installation instructions, check out the Getting Started with the Unbreakable Enterprise Kernel installation guide on the Oracle Technology Network.
Now that the Unbreakable Enterprise Kernel Release 2 has been released, we will continue to provide support for Release 1 of the Unbreakable Enterprise Kernel (2.6.32) in the form of critical bug fixes and security errata for another 9 months. However, new hardware enablement (e.g. by providing device driver updates) will now only be made available through the quarterly updates of Unbreakable Enterprise Kernel Release 2 on the Unbreakable Linux Network. During this grace period, we encourage all customers to switch to Release 2.
Saturday Mar 03, 2012
By Lenz Grimmer on Mar 03, 2012
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
By Lenz Grimmer on Feb 24, 2012
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.
Thursday Feb 23, 2012
By Lenz Grimmer on Feb 23, 2012
Ever since we began offering enterprise-class support for Linux, our Oracle Linux Support program has offered industry leading value with:
- 8 years of support
- Premier backports
- Unlimited sustaining support
- Management and Clustering included
- Zero downtime updates via Ksplice
- All at the lowest cost
We already covered the extension of Ksplice support for Red Hat Enterprise Linux in this previous blog post, but the associated press release included another important announcement: we've now extended the Oracle Linux Support lifecycle to cover a time frame of 10 years.
With this announcement we are bringing our Linux support policy in line with the already existing support periods for Oracle Solaris. Existing customers can continue to run the same release of Oracle Linux 5 and 6 for two additional years.
For more details about the terms and conditions of our support offering, please see the updated support policies document (PDF).
Wednesday Feb 22, 2012
By Lenz Grimmer on Feb 22, 2012
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:
- The SDT (Statically Defined Tracing) provider is implemented, providing in-kernel static probes. Some of the proc provider is implemented using this facility.
- 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!
By Lenz Grimmer on Feb 22, 2012
As you probably know by now, we in the Oracle Linux Team are quite enthusiastic about Ksplice. Just in case you haven't heard about Ksplice yet, this technology allows you to apply security fixes and upgrades to the Linux kernel while your system is running, without having to reboot your server. Your applications remain unaffected — there is no service disruption or performance impact involved.
Ksplice was added to our Oracle Linux Premier support subscription some time ago (at no additional cost) and customers rely on it to ensure their systems are always up to date and fully patched, even if the next scheduled maintenance window is still days (or weeks) ahead.
Before, Ksplice patches were only provided for customers running Oracle Linux with the Unbreakable Enterprise Kernel. Today, we’re extending our support offering: Ksplice zero downtime kernel updates are now available for the Red Hat compatible kernel on Oracle Linux 5 and 6 as well. And if you are running Red Hat Enterprise Linux without Oracle Linux support and you’d like to try Ksplice, sign up for our 30-day free trial.
Friday Jan 06, 2012
By Lenz Grimmer on Jan 06, 2012
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.
Thursday Dec 15, 2011
By Lenz Grimmer on Dec 15, 2011
We're glad to announce the immediate availability of Oracle Linux 6 Update 2, including the latest build of the Unbreakable Enterprise Kernel. For a detailed list of changes, features and known issues, please see the release notes.
Installable binary and source ISO images will be available on the Oracle Software Delivery Cloud shortly. As usual, these ISO images are freely available and distributable, so please spread the word and the code!
Monday Oct 10, 2011
By Monica Kumar on Oct 10, 2011
Last week's Oracle OpenWorld was an incredible success. By any standards. From the vast amount of content that was delivered, the passion and zeal displayed by attendees that were eager to learn, share and network, the larger than life keynotes, the food, the activities, the keynotes, the drama, the large scale, entertainment with Sting and Tom Petty, everything was meticulous!
Hats off to the Oracle employees who work day in and day out to make this experience possible for our attendees!
Now that we are back to our normal work routine, I looked back at all the announcements/discussions and wanted to share a few with you that are relevant to the Linux community.
1. Unbreakable Enterprise Kernel Release 2 (Beta):
We announced the availability of Unbreakable Enterprise Kernel 2 (UEK2) beta which is based on Linux 2.6.39 and includes featuures such as btrfs in production, Linux container, Open vSwitch and more. UEK2 beta is freely available to everyone. All you need is Oracle Linux 6 installed (also freely available from edelivery) and connect to the Unbreakable Linux Network (ULN) if you are an existing customer or if you just want to play with cool new stuff, use our public yum repository. Check out Wim Coeakert's blog entry with details on UEK2.
2. DTrace in Linux:
Another interesting feature we announced and is already available to Oracle Linux customers is "DTrace." We released a preview of DTrace which is made available to Oracle Linux support subscribers. Wim is also on a roll as you can see from his detailed blog entry on DTrace!
3. Zero downtime updates with Ksplice:
Ksplice has to be the hottest thing in Linux! Since early September Oracle Linux customers with a Premier support subscription, or Oracle customers with Oracle Premier Support for Systems and Operating Systems, have access to the newly added "zero downtime kernel updates" with Ksplice. Ksplice updates are kernel updates that can be applied on a running system. Note that we are not just talking about being able to install a new update of a package while the system is running and it then have take effect after a reboot or restart. The ksplice patches are immediately applied to the running Linux kernel and are effective immediately. On subsequent reboot, these patches are applied at bootup, or if a customer has installed a newer version of the kernel rpm itself, then of course the new kernel would just be loaded. How cool is this! Read Ksplice details here.
We are on a roll! Oracle is seriously investing in Linux and is driving Linux innovation hand in hand with the Linux community. Not only is Oracle Linux Support still much lower cost, but it is also superior in the features and functionality we bring to customers. Oracle Linux is the BEST Linux for any enterprise computing needs. Period.
Check out the Oracle Linux home page.
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