Monday Oct 21, 2013

Announcing Unbreakable Enterprise Kernel Release 3 for Oracle Linux

We are excited to announce the general availability of the Unbreakable Enterprise Kernel Release 3 for Oracle Linux 6. The Unbreakable Enterprise Kernel Release 3 (UEK R3) is Oracle's third major supported release of its heavily tested and optimized Linux kernel for Oracle Linux 6 on the x86_64 architecture.

UEK R3 is based on mainline Linux version 3.8.13. Some notable highlights of this release include:

  • Inclusion of DTrace for Linux into the kernel (no longer a separate kernel image). DTrace for Linux now supports probes for user-space statically defined tracing (USDT) in programs that have been modified to include embedded static probe points
  • Production support for Linux containers (LXC) which were previously released as a technology preview
  • Btrfs file system improvements (subvolume-aware quota groups, cross-subvolume reflinks, btrfs send/receive to transfer file system snapshots or incremental differences, file hole punching, hot-replacing of failed disk devices, device statistics)
  • Improved support for Control Groups (cgroups) 
  • TCP fast open (TFO) can speed up the opening of successive TCP connections between two endpoints
  • FUSE file system performance improvements on NUMA systems
  • Support for the Intel Ivy Bridge (IVB) processor family
  • Integration of the OpenFabrics Enterprise Distribution (OFED) 2.0 stack, supporting a wide range of Infinband protocols including updates to Oracle's Reliable Datagram Sockets (RDS)
  • Numerous driver updates in close coordination with our hardware partners
UEK R3 uses the same versioning model as the mainline Linux kernel version. Unlike in UEK R2 (which identifies itself as version "2.6.39", even though it is based on mainline Linux 3.0.x), "uname" returns the actual version number (3.8.13).

For further details on the new features, changes and any known issues, please consult the Release Notes.

The Unbreakable Enterprise Kernel Release 3 and related packages can be installed using the yum package management tool on Oracle Linux 6 Update 4 or newer, both from the Unbreakable Linux Network (ULN) and our public yum server. Please follow the installation instructions in the Release Notes for a detailed description of the steps involved.

The kernel source tree will also available via the git source code revision control system from https://oss.oracle.com/git/?p=linux-uek3-3.8.git

If you would like to discuss your experiences with Oracle Linux and UEK R3, we look forward to your feedback on our public Oracle Linux Forum.

Tuesday Oct 08, 2013

Oracle Linux 5.10 has been released

We're happy to announce the availability of Oracle Linux 5.10, the tenth update release for Oracle Linux 5. ISO images will soon be available from the Oracle Software Delivery Cloud and the individual RPM packages have already been published to our public yum repository. This release includes the Unbreakable Enterprise Kernel Release 2 (2.6.39-400), Oracle's recommended kernel for Oracle Linux. For further details, please see the Oracle Linux 5.10 Release Notes.

Oracle Linux can be downloaded, used and distributed free of charge and updates and errata are freely available. For support, you are free to decide which of your systems you want to obtain a support subscription for, and at what level each system should be supported. This makes Oracle Linux an ideal choice for your development, testing 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.

Wednesday Oct 02, 2013

Release Candidate for Unbreakable Enterprise Kernel Release 3 is now available

We are happy to announce the availability of the release candidate for the Unbreakable Enterprise Kernel Release 3 for Oracle Linux 6. The Unbreakable Enterprise Kernel Release 3 (UEK R3) is Oracle's third major release of its heavily tested and optimized operating system kernel for Oracle Linux 6 on the x86_64 architecture. It is based on the mainline Linux version 3.8.13.

The release candidate version is 3.8.13-16 and includes additional improvements and bug fixes in preparation for our final release.  As a recap, the features users can expect in this release include:

  • Inclusion of DTrace for Linux into the kernel (no longer a separate kernel image). DTrace for Linux now now supports probes for user-space statically defined tracing (USDT) in programs that have been modified to include embedded static probe points.
  • Btrfs file system improvements (subvolume-aware quota groups, cross-subvolume reflinks, btrfs send/receive to transfer file system snapshots or incremental differences, file hole punching, hot-replacing of failed disk devices)
  • Improved support for Control Groups (cgroups) and Linux containers (LXC).
  • The ext4 file system can now store the content of a small file inside the inode (inline_data).
  • TCP fast open (TFO) can speed up the opening of successive TCP connections between two endpoints.

The Unbreakable Enterprise Kernel Release 3 can be installed on Oracle Linux 6 Update 4 or newer, running either the Red Hat compatible kernel or a previous version of the Unbreakable Enterprise Kernel. The UEKR3 beta kernel packages and supporting userland utilities can be installed using the yum package management tool from the public-yum server.

For installation instructions and more details on the new features, changes and any known issues, please consult the Release Notes found on our public beta site.

We've created a dedicated public beta test discussion forum — please join us and share your observations and impressions there!

Wednesday Sep 25, 2013

Wednesday is Full of Great Excitement in San Francisco!

How can we top today's activities in San Francisco?? 

First there is Americas Cup Finals where Oracle Team America is about to win, Customer appreciation concert featuring Maroon 5, San Francisco Giants vs LA Dodgers game.. too much excitement going on but we have some great events at Oracle OpenWorld as well.

 Our Oracle Linux Sessions today:

 10:15am Oracle Linux: Diagnostics and Troubleshooting (Greg Marsden)  Westin- City

 1:15pm  HOL: Getting started with Linux Container (Lenz Grimmer)  Marriott Marquis-Salon 5/6

Visit one of our demopods:

Migration Made Easy: Red Hat and SUSE Linux to Oracle Linux Moscone South, SC-144

Oracle Linux: The Best Enterprise Linux Moscone South, SC-146

Oracle Linux and Virtualization Pavilion 

Visit the Oracle Linux and Virtualization Pavilion to hear why leading ISVs and IHV partners support Oracle Linux and Oracle VM. The partners attending to Linux and Virtualization Pavilion this year are:  Beyondtrust, HP, Dell, Emulex, SAS, TrendMicro, NimbleStorage

We are also hosting an event in the pavilion :

"Meet the Experts" session today 3pm  with Wim Coekaerts, Sr.VP of Oracle Linux and Virtualization Engineering as the guest with developers, experts from Oracle Linux and Oracle VM. 

Visit this session and you can to talk to our experts you can get a limited edition T-Shirt and be in the drawing for a cool penguin.

 Have a great day and GO Oracle Team USA and Oracle Linux team !

Tuesday Sep 24, 2013

Meet the Oracle Linux and Virtualization Experts at Oracle Openworld

Where are these penguins going??

They are going to:

 "Meet the Experts" session on Wed, 9/25 3pm

Oracle Linux and Virtualization Pavilion, Moscone South #2021.

Our Sr.VP of Oracle Linux and Virtualization Engineering, Wim Coekaerts will be there to take your tricky questions, we will also have our Product Managers, engineers and developers from Oracle Linux and Oracle VM teams to chat. 

You can also get your hands on a "Limited edition" Oracle Linux and Oracle VM T-Shirt. Don't miss this event!

Are you coming? 

YOU ARE INVITED: Oracle Linux Customer Presentations Today @OPENWORLD

It was a full day yesterday at Oracle Openworld but today is more special because we have two customer sessions and Hands-On Lab. Come and attend our sessions for an insight into how the customers are implementing Oracle Linux. 

Tuesday, 9/25 Customer Sessions are:

Oracle Linux Technical Deep Dive: Reliability, Availability, and Scalability
Yoshinori Saiga, NTT Docomo
Michele Casey, Oracle
Lenz Grimmer, Oracle
10:30 AM - 11:30 AM Westin San Francisco - Franciscan I CON9531
Why Is Oracle Linux the Best Linux for Running Oracle Database?
Steve Fluge, Bank of America
Ravitej Animi, Oracle
Sumanta Chatterjee, Oracle
3:45 PM - 4:45 PM Westin San Francisco - Franciscan II CON9543

 Hands-On Lab for Tuesday, 9/24:

Oracle Linux Package and Patch Management Solutions
Timothy Hill, Oracle
Avi Miller, Oracle
10:30 AM - 1:00 PM Marriott Marquis - Salon 10A HOL10147

We would like to invite you one more time to our Demo at Moscone South, Server and Storage Demogrounds. You can grab an Oracle Linux and Oracle VM DVD while you are there.

Oracle Linux: The Best Enterprise Linux Moscone South, Center - SC-146

Oracle Linux and Virtualization Pavilion (Booth #2021) 

Also Come and visit our Oracle Linux and Virtualzation Pavilion where our Partners are presenting their solutions for Oracle Linux and Oracle VM.

Oracle Linux and Oracle VM provide the most cost-effective and integrated infrastructure solution in the market. By taking a holistic approach that addresses all layers of the enterprise data center, Oracle Linux and Virtualization solutions with partner products can help companies transform into effective service providers that support business priorities at lower cost. Visit the Oracle Linux and Virtualization Pavilion to hear why leading ISVs and IHV partners support Oracle Linux and Oracle VM. The partners attending to Linux and Virtualization Pavilion this year are: • HP • Emulex • SAS • Beyondtrust • TrendMicro • NimbleStorage Moscone South - Booth 2021

 Have a great day!

Tuesday Sep 17, 2013

Performance Issues with Transparent Huge Pages (THP)

One key reason customers choose Oracle Linux is the investment Oracle makes in optimizing Linux for demanding workloads.  Part of this work includes extensive testing for I/O intensive workloads, like the Oracle Database. A common test used at Oracle to measure I/O throughput and performance is the Oracle Orion Calibration Tool, which simulates the I/O workloads of an Oracle Database. Recently, the Oracle Linux team discovered a significant lag in I/O performance, which was later traced to a feature in the Linux kernel, Transparent Huge Pages (also known as THP). During these tests, our engineering teams discovered THP introduced a 30% performance degradation in I/O throughput. When Transparent Huge Pages were removed from the kernel, performance values returned to their expected levels.

Our engineers have been working with the community to identify the root cause of this performance problem, which also impacts other projects, such as Hadoop. Oracle’s kernel engineers have traced the performance issues with Transparent Huge Pages to its use of swappable hugepages. Prior to THP, hugepages were not swappable. It appears the overhead generated by this implementation is the root cause of the deterioration seen in performance when the feature is enabled (compiled) in the kernel. Our kernel engineers are working on several changes to the code which they believe will improve performance with THP, but the final resolution will take time to develop, test and release.

Due to the impact this feature has on performance with applications like the Oracle Database and the timing of a final fix, Oracle Linux will disable Transparent Huge Pages in the Unbreakable Enterprise Kernel, beginning with Quarterly Update 5 for the Unbreakable Enterprise Kernel, Release 2 (version 2.6.39-400.209.1). To maintain binary compatibility with the Red Hat distribution, the Red Hat Compatible kernel will be left as is, with Transparent Huge Pages enabled. In addition, the Oracle Database team has released an alert recommending all customers disable THP in all Linux systems running RAC and even those systems running single instances, due to instability. Please note that THP is not used by the Oracle Database, the recommendation is to use huge pages. Additional information for huge pages can be found in your Oracle Database documentation or on My Oracle Support.

Our engineers will continue to work with others in the community on a final resolution to the performance issues seen with Transparent Huge Pages. Once a fix is available, we will re-enable this feature in the Unbreakable Enterprise Kernel.

Unbreakable Enterprise Kernel Release 2 Quarterly Update 5 has been released

We are pleased to announce the availability of the 5th quarterly update update release for the Unbreakable Enterprise Kernel Release 2 (version 2.6.39-400.209.1) for Oracle Linux 5 and Oracle Linux 6.  This release includes driver updates as well as a consolidation of bug fixes and security updates.

 Notable changes include:

  • Xsigo virtual host adapter and network drivers to support Oracle SDN (Software Defined Network), previously known as Xsigo Fabric Accelerator.
  • LSI Fusion-MPT SAS 3.0 driver to support up to 12 Gb/s host controllers.
  • XEN improvements, such as the indirect-descriptor feature, which increases throughput and reduces latency for block I/O.

For additional details, please refer to the release notes.

Binary RPMs can be downloaded and installed using yum from the Unbreakable Linux Network (ULN) as well as Oracle's public-yum server.  The Unbreakable Enterprise Kernel is installed and booted by default on Oracle Linux.  See this article on Oracle Technology Network for details on how to install and update the kernel.

The source code, including the full revision history, is available from Oracle's git repository at https://oss.oracle.com/git/?p=linux-uek-2.6.39.git;a=summary.


        
    

Thursday Aug 29, 2013

Beta 1 of Unbreakable Enterprise Kernel Release 3 now available

We are happy to announce the availability of Beta 1of the Unbreakable Enterprise Kernel Release 3 for Oracle Linux 6. The Unbreakable Enterprise Kernel Release 3 (UEK R3) is Oracle's third major release of its heavily tested and optimized operating system kernel for Oracle Linux 6 on the x86_64 architecture. It is based on the mainline Linux version 3.8.13.

The 3.8.13-13 release also updates device drivers and includes bug and security fixes. Some notable improvements in functionality and new features include:

  • Numerous stability and scalability enhancements
  • Inclusion of DTrace 0.4 for Linux into the kernel (no longer a separate kernel image). DTrace for Linux now now supports probes for user-space statically defined tracing (USDT) in programs that have been modified to include embedded static probe points.
  • Btrfs file system improvements (subvolume-aware quota groups, cross-subvolume reflinks, btrfs send/receive to transfer file system snapshots or incremental differences, file hole punching, hot-replacing of failed disk devices)
  • Improved support for Control Groups (cgroups) and Linux containers (LXC).
  • The ext4 file system can now store the content of a small file inside the inode (inline_data).
  • TCP fast open (TFO) can speed up the opening of successive TCP connections between two endpoints.

The Unbreakable Enterprise Kernel Release 3 can be installed on Oracle Linux 6 Update 4 or newer, running either the Red Hat compatible kernel or a previous version of the Unbreakable Enterprise Kernel. The UEKR3 beta kernel packages and supporting userland utilities can be installed using the yum package management tool from the public-yum server.

For installation instructions and more details on the new features, changes and any known issues, please consult the Release Notes found on our public beta site.

We've created a dedicated public beta test discussion forum — please join us and share your observations and impressions there!

Tuesday Aug 13, 2013

Oracle Linux at Oracle Openworld 2013 - Update #1

Oracle Openworld San Francisco is only 40 days away so it is time to plan for your sessions and activities. This year's event will be full of excitement with Americas Cup and the Oracle Linux Penguin racing to bring you new and insightful content!.  In this blog, we will talk about the key Oracle Linux sessions, don't forget to add them to your schedule in advance because the Linux sessions get full very quickly. 


  • General Session: Oracle Linux—State of the Penguin (GEN9450)

Monday , Sep 23, 10:45 AM in Westin San Francisco - Metropolitan II

In this session, the Oracle Linux executive team will discuss the strategy, latest product updates, roadmap, key partnerships, competitive landscape, community engagements, and what’s next for Oracle Linux. The session is an opportunity to learn—from the source—the decisions driving Linux development at Oracle. If you are interested in running Linux for your mission-critical applications, especially Oracle workloads, you should not miss this session.

  • Managing Your Oracle Linux Environment (CON9452)

Monday, 9/23, 4:45pm PT, Westin

This session will discuss common methods customers use to manage their Oracle Linux environment, including tips and tricks for patching and provisioning. Whether you prefer to leverage system tools such as YUM with local repositories, open source projects such as Spacewalk, or a full-scale system management solution such as Oracle Enterprise Manager 12c, this session will cover all the different tools available to manage Oracle Linux.

  • Oracle Linux Technical Deep Dive: Reliability, Availability, and Scalability  (Session ID: CON9531)

Tuesday , Sep 24, 10:30 AM in Westin San Francisco - Franciscan

This technical session outlines the key features and enhancements in Oracle Linux, including file systems, Unbreakable Enterprise Kernel, performance enhancements, and high availability. It shows you how Oracle Clusterware can be used with Oracle Linux to make your Linux environment highly available and how you can use it to monitor and manage a variety of applications, such as Web servers or MySQL databases running on your Oracle Linux system.  

  • Why Is Oracle Linux the Best Linux for Running Oracle Database? (CON9543)

Tuesday , Sep 24, 3:45  PM in Westin San Francisco - Franciscan II 

In this session, you will hear from Bank of America as well as from Oracle experts about why Oracle Linux is the best Linux for running Oracle Database workloads. You’ll learn about tools for easy installations, including Oracle VM Templates and validated RPM, and how Bank of America is taking advantage of Oracle Database running on Oracle Linux to minimize the downtime of mission-critical databases, improve performance, and reduce cost.

  • Oracle Linux Troubleshooting: Diagnostics and Best Practices (CON9458)

Wed, 9/25, 10:15am Westin

In this session, learn about the best methods for tuning Linux and get tips, tricks, and techniques for assessing and troubleshooting your Oracle Linux systems. Understand the options available with Oracle Linux, including best practices for configuration and tuning and the introduction of new features for dynamic and static tracing with the DTrace feature of Oracle Linux. Join the Oracle Linux product experts who understand your environment and the tools to keep your data center operating at maximum efficiency.

If you are a developer, you may also want to join this session:

  • Using Oracle Linux As Your Development Platform  (CON9459)

Monday , Sep 23, 3:15 PM in Marriott Marquis - Golden Gate C3

In this session, you will learn about tools available from Oracle that enable you to create a powerful, feature-rich development environment with Oracle Linux. Oracle experts describe their experience and recommended best practices for using familiar tools shipped with Oracle Linux, such as the gcc C/C++ compiler, the gdb debugger, and various tracing tools.  

This is just a sampling of the many sessions you have to choose from. We'll talk more about other sessions you can attend, including hands on labs, and demos in upcoming blog articles. Until then, feel free to have a look through the Content Catalog (search on "Oracle Linux" or other related terms to see what piques your interest!).

Stay tuned for more updates as we count down to Oracle Openworld 2013.

Wednesday Jul 17, 2013

Oracle Continues Linux Leadership with 80% Year over Year Growth for Oracle Linux

Oracle today announced that customers and partners continue to rapidly adopt Oracle Linux to increase the scalability, reliability and performance of their critical applications and systems.

“Epsilon offers a broad array of data-driven, multichannel marketing solutions for many of the biggest brands in the world. Our information systems have been experiencing substantial growth year-over-year, with increased demand for real-time reporting, and high performance transaction processing. To enable customers to interact with a brand in a more dynamic real-time manner, we knew our infrastructure had to be comprehensive, well integrated and scalable. With our Oracle Exadata Database Machines running Oracle Linux, we are achieving transactional processing speeds that were previously not attainable. Oracle’s technologies and world-class support have been instrumental in enabling us to deliver new value-add services and greater efficiency for clients,” said Jeff White, vice president, technology, strategic database services at Epsilon.

Read the full press release for details.


Friday Jun 14, 2013

Unbreakable Enterprise Kernel Release 2 Quarterly Update 4 has been released

We're pleased to announce that the fourth quarterly update release of the Unbreakable Enterprise Kernel Release 2 (Version 2.6.39-400.109) for Oracle Linux 5 and 6 has been published. This release includes driver updates as well as fixes for bugs and security issues.

Some notable highlights include:

  • OpenFabrics Alliance (OFED) 1.5.5 Infiniband stack
  • Btrfs bug fixes and improvements
  • Xen improvements
  • Numerous device driver updates (e.g. storage devices, network cards)

For more details, please consult the release notes.

Binary RPMs can be downloaded and installed using yum from the Unbreakable Linux Network (ULN) as well as our public-yum server. The Unbreakable Enterprise Kernel is installed and booted by default on Oracle Linux. See this article on the Oracle Technology Network for details on how to install and update it.

The source code including the full revision history is available from our git repository at https://oss.oracle.com/git/?p=linux-uek-2.6.39.git;a=summary

Monday Jun 10, 2013

OTN Latin America Tour Features Oracle Linux and Oracle VM

We will be part of OTN Latin America Tour 2013! You can hear about the latest product developments, features, tips about Oracle Linux and Oracle VM and ask questions to local experts. Here are the cities and the dates when we visit:

North:
Colombia 12/7
Ecuador 15/7
Guatemala 17/7
Panama 22/7
Costa Rica 24/7
Mexico 26/7

South:
Chile 01/08
Peru  03/08
Uruguay 06/08
Argentina 08/08
Brazil 10/08

Check the event page (in  Spanish or Portuguese ) for more details and register for these events.

We look forward to seeing you there.

Oracle Linux Team

Monday May 20, 2013

Oracle is sponsoring LinuxCon Japan 2013

LinuxCon Japan is the premiere Linux conference in Asia that brings together a unique blend of core developers, administrators, users, community managers and industry experts. It is designed not only to encourage collaboration but to support future interaction between Japan and other Asia Pacific countries and the rest of the global Linux community. The conference includes presentations, tutorials, birds of a feather sessions, keynotes, sponsored mini-summits. LinuxCon Japan will be showcasing Oracle Linux in  following sessions, as well as Technology showcase. 

Wednesday, May 29th, 3pm Neptune Room:

Recent Developments in the Linux Kernel Security Subsystem - James Morris, Oracle

Thursday, May 30th,  2pm Pegasus Room:

Recent Developments in the Linux Tracing World - Elena Zannoni, Oracle 

Friday, May 31st, 11am Neptune Room:

Btrfs Specific Data Deduplication - Lui Bo, Oracle

Friday, May 31st, 12pm Mars Room:

XFS in Rapid Development - Jeff Liu, Oracle

We also have a booth at Technology Showcase #4 where we will distribute Oracle Linux/Oracle VM DVD Kit, brochures and other goodies that you should not miss!

 Register today and come and visit us in our stand.


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