Thursday Dec 15, 2011

Oracle Linux 6.2 has been released

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!

The binary RPM packages are available on the Unbreakable Linux Network and our public yum repository.

Monday Oct 10, 2011

Oracle Linux is on a Roll! DTrace, UEK2, Ksplice and More...

Oracle Linux PenguinLast 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.

Thursday Sep 15, 2011

Now Available: Zero Downtime Updates for Oracle Linux with Ksplice

Ksplice, which was recently acquired by Oracle in July 2011, is now available as part of Oracle Linux. With Ksplice, users can update the Linux operating system (OS) kernel, while it is running, without a reboot or any interruption. Only Oracle Linux offers this unique capability, making it possible for users to make important Linux updates without burdening the team with the operational cost and disruption of rebooting for every update to Linux.

Available at no additional charge to existing and new Oracle Linux Premier Support customers, Oracle’s Ksplice Uptrack service is easy to access. Oracle Linux Premier Support subscribers can request a Ksplice access key through Unbreakable Linux Network (ULN). After installing Ksplice, you can easily apply all important Linux kernel updates without needing to reboot. No configuration changes or initial reboot is needed to install. Under the hood, Ksplice loads a Linux kernel module that rewrites portions of the running kernel to apply the updates.

Read the Ksplice data sheet.

Join us on September 20th at 9:00 am US PT for a Ksplice webcast and get more details.


Saturday Aug 06, 2011

Oracle Linux 5 update 7 on edelivery

Oracle Linux 5 update 7 ISO images are available for (free) download from https://edelivery.oracle.com/linux  since a few days. We had previously released all the packages and created the channels on http://linux.oracle.com for customers with subscriptions.

The freely available yum repository for the 5.7 base channel is online here : http://public-yum.oracle.com

All srpm updates are to be found : http://oss.oracle.com/ol5/SRPMS-updates/

Our GIT repo for UEK with all checkins, changelogs etc :  http://oss.oracle.com/git/?p=linux-2.6-unbreakable.git


Friday Jul 22, 2011

Oracle Linux Enhanced with Zero Downtime Software Updates

Oracle Buys Ksplice

Oracle today announced that it has acquired Ksplice, Inc., the creator of innovative zero downtime update technology for Linux. The transaction has closed.

The addition of Ksplice’s technology will increase the security, reliability and availability of Oracle Linux by enabling customers to apply security updates, diagnostics patches and critical bug fixes without rebooting.

Oracle believes it will be the only enterprise Linux provider that can offer zero downtime updates, and expects to make the Ksplice technology a standard feature of Oracle Linux Premier Support.

Ksplice Inc. is a privately-held company based in Cambridge, Mass.

Read more 

Friday Jul 01, 2011

Annoucement: The new OPN Exastack program is Oracle Linux Ready

Enabling Independent Software Vendors (ISVs) and other members of Oracle Partner Network (OPN) to rapidly build and deliver faster, more reliable applications to end customers, Oracle today introduced Oracle Exastack Ready, available now, and Oracle Exastack Optimized, available in fall 2011 through OPN.

After qualifying their applications as Oracle Exastack Ready, partners can note to customers that their applications run on and support Oracle Exadata Database Machine and Oracle Exalogic Elastic Cloud component products including Oracle Solaris, Oracle Linux, Oracle Database and Oracle WebLogic Server. Customers can be confident when choosing a partner’s Oracle Exastack Optimized application, knowing it has been tuned by the OPN member on Oracle Exadata Database Machine or Oracle Exalogic Elastic Cloud with a goal of delivering optimum speed, scalability and reliability.

Oracle Exastack Ready: Oracle Exastack Ready provides qualifying partners with specific branding and promotional benefits based on their adoption of Oracle products. If a partner application supports the latest major release of one of these products, the partner may use the corresponding logo with their product marketing materials: Oracle Solaris Ready, Oracle Linux Ready, Oracle Database Ready, and Oracle WebLogic Ready. Oracle Exastack Ready is available to OPN members at the Gold level or above. Additionally, OPN members participating in the program can leverage their Oracle Exastack Ready applications toward advancement to the Platinum or Diamond levels in the OPN Specialized program and toward achieving Oracle Exastack Optimized status.

Get more details on the Exastack program


Tuesday Jun 28, 2011

Oracle Announces New Oracle VM Template for MySQL Enterprise Edition

Oracle announces new Oracle VM template for MySQL Enterprise Edition enabling more efficient and lower cost deployments of virtualized MySQL environments. Here are some of the details and benefits:


* The new Oracle VM Template for MySQL helps eliminate manual configuration efforts and risks by providing a pre-installed, pre-configured and certified software stack that includes Oracle VM Server for x86, Oracle Linux with the Unbreakable Enterprise Kernel and MySQL Enterprise Edition.

* By pre-integrating the world’s most popular open source database with Oracle Linux and Oracle Virtualization technologies, enterprise users and ISVs can quickly and easily deploy and manage a virtualized MySQL database server for Web and cloud-based applications.

* Backed by Oracle’s world-class support organization and the result of extensive integration and quality assurance testing, the Oracle VM Template for MySQL Enterprise Edition further demonstrates Oracle’s investment in MySQL and allows users to benefit from a single point of contact for 24/7 technical support for all pre-configured components.

Read more in this white paper


 

 

Monday Jun 06, 2011

Oracle Linux 6.1 ISO images now available for download

Just a quick followup to the previous blog post: ISO images for Oracle Linux 6.1 are now available for download from E-Delivery as well.

Oracle Linux 6.1 is free to download, use and distribute under the terms of the GPL. So please give it a try and let us know what you think!

Wednesday Jun 01, 2011

Oracle Linux 6.1 has been released

Oracle Linux Release 6 Update 1 is now available! As usual, it is free to download, evaluate, use and distribute and we encourage you to give it a try!

Individual RPM packages are already available from our public yum server, ISO images will be on E-Delivery shortly. The source RPMs can be downloaded from http://oss.oracle.com/el6/

Like in the previous release, the Unbreakable Enterprise Kernel (kernel-uek-2.6.32-100.34.1.el6uek) is installed and enabled by default. If you prefer to maintain full kABI compatibility, the Red Hat compatible Kernel (kernel-2.6.32-131.0.15.el6) is installed as well and can be selected manually at boot up time or by changing the default in the GRUB configuration file.

In addition to numerous driver updates (e.g. Network, SCSI, Infiniband), the Unbreakable Enterprise Kernel includes some improvements in the following areas:

  • Improved IRQ balancing
  • Reduced lock contention across the kernel to improve performance on large NUMA systems
  • Improved network I/O via receive packet steering and RDS improvements
  • Improved virtual memory performance
New: Oracle Linux 6.1 includes both a 32 bit and a 64 bit Unbreakable Enterprise Kernel.

Please check the Release Notes for a detailed description of the changes.

Tuesday Apr 05, 2011

SAP Certifies its Products on Oracle Linux, including Unbreakable Enterprise Kernel

Unicode versions of SAP products based on SAP NetWeaver 7.0x are now certified for Oracle Linux starting with Oracle Linux 5.5.  This certification includes Unbreakable Enterprise Kernel.  For details, see this list of supported platforms or the SAP on Oracle Database community on the SAP Community Network.

Friday Apr 01, 2011

Oracle Delivers Three New Validated Configurations


Oracle Validated Configurations enable easier, faster, and lower-cost deployment of Oracle Linux and Oracle VM solutions in the enterprise, by offering best practices via pre-tested, validated architectures that help improve the reliability of solutions.

Three new Oracle Validated Configurations are now available to speed the deployment of solutions based on Oracle Linux with Oracle's Unbreakable Enterprise Kernel.

The three new configurations consist of Oracle Linux 5 with the Unbreakable Enterprise Kernel, Oracle Database 11gOracle Real Application ClustersOracle's Sun ZFS Storage 7420 appliance, and one of the following:


The latest Oracle Validated Configurations are available on the Oracle Technology Network.

Read More

Thursday Feb 10, 2011

Oracle Database Smart Flash Cache: Only on Oracle Linux and Oracle Solaris

Oracle Database Smart Flash Cache is a feature that was first introduced with Oracle Database 11g Release 2. Only available on Oracle Linux and Oracle Solaris, this feature increases the size of the database buffer cache without having to add RAM to the system. In effect, it acts as a second level cache on flash memory and will especially benefit read-intensive database applications.

The Oracle Database Smart Flash Cache white paper concludes:

Available at no additional cost, Database Smart Flash Cache on Oracle Solaris and Oracle Linux has the potential to offer considerable benefit to users of Oracle Database 11g Release 2 with disk-bound read-mostly or read-only workloads, through the simple addition of flash storage such as the Sun Storage F5100 Flash Array or the Sun Flash Accelerator F20 PCIe Card.

Read the white paper.

 

Oracle Linux 6 DVDs Now Available

On Sunday 6 February 2011, Oracle Linux 6 was released on the Unbreakable Linux Network for customers with an Oracle Linux support subscription. Shortly after that, the Oracle Linux 6 RPMs were made available on our public yum server. Today we published the installation DVD images on edelivery.oracle.com/linux. Oracle Linux 6 is free to download, install and use. The full release notes are here, but similar to my recent post about Oracle Linux 5.6, I wanted to highlight a few items about this release.

Unbreakable Enterprise Kernel

As is the case with Oracle Linux 5.6, the default installed kernel on x86_64 platform in Oracle Linux 6 is the Unbreakable Enterprise Kernel. If you haven't already, I highly recommend you watch the replay of this webcast by Chris Mason on the performance improvements made in this kernel.

	# uname -r
	2.6.32-100.28.5.el6.x86_64

The Unbreakable Enterprise Kernel is delivered via the package kernel-uek:

	[root@localhost ~]# yum info kernel-uek
	...
	Installed Packages
	Name       : kernel-uek
	Arch       : x86_64
	Version    : 2.6.32
	Release    : 100.28.5.el6
	Size       : 84 M
	Repo       : installed
	From repo  : anaconda-OracleLinuxServer-201102031546.x86_64
	Summary    : The Linux kernel
	URL        : http://www.kernel.org/
	License    : GPLv2
	Description: The kernel package contains the Linux kernel (vmlinuz), the core of
	           : any Linux operating system.  The kernel handles the basic functions
	           : of the operating system: memory allocation, process allocation,
	           : device input and output, etc.

ext4 file system

The ext4 or fourth extended filesystem replaces ext3 as the default filesystem in Oracle Linux 6.
	# mount
	/dev/mapper/VolGroup-lv_root on / type ext4 (rw)
	proc on /proc type proc (rw)
	sysfs on /sys type sysfs (rw)
	devpts on /dev/pts type devpts (rw,gid=5,mode=620)
	tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0")
	/dev/sda1 on /boot type ext4 (rw)
	none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

Red Hat compatible kernel

Oracle Linux 6 also includes a Red Hat compatible kernel built directly from RHEL source. It's already installed, so booting it is a matter of editing /etc/grub.conf

	# rpm -qa | grep kernel-2.6.32
	kernel-2.6.32-71.el6.x86_64

Oracle Linux 6 no longer includes a Red Hat compatible kernel with Oracle bug fixes. The only Red Hat compatible kernel included is the one built directly from RHEL source.

Yum-only access to Unbreakable Linux Network (ULN)

Oracle Linux 6 uses yum exclusively for access to Unbreakable Linux Network. To register your system with ULN, use the following command:

	
	 # uln_register

 

No Itanium Support

Oracle Linux 6 is not supported on the Itanium (ia64) platform.

Next Steps

Wednesday Jan 26, 2011

Oracle Linux 5.6 DVDs Now Available

On Thursday 20 January 2011, Oracle Linux 5.6 was released on the Unbreakable Linux Network for customers with an Oracle Linux support subscription. Today we published the installation DVD images on edelivery.oracle.com/linux. As always, Oracle Linux 5.6 is free to download, install and use. The release notes are here, but I wanted to highlight a few items about this release.

Unbreakable Enterprise Kernel

Oracle Linux 5.6 makes Unbreakable Enterprise Kernel the default kernel after installation unless you perform a custom installation. Note that Unbreakable Enterprise Kernel is available for the x86_64 platform only. Yesterday, Chris Mason, our Director of Linux Engineering delivered a webcast on the performance improvements we made to this kernel. I highly recommend you watch the replay.

[root@localhost ~]# uname -r
2.6.32-100.26.2.el5
[root@localhost ~]# 

The Unbreakable Enterprise Kernel is delivered via the package kernel-uek:

[root@localhost ~]# yum info kernel-uek
Loaded plugins: rhnplugin, security
Installed Packages
Name       : kernel-uek
Arch       : x86_64
Version    : 2.6.32
Release    : 100.26.2.el5
Size       : 78 M
Repo       : installed
Summary    : The Linux kernel
URL        : http://www.kernel.org/
License    : GPLv2
Description: The kernel package contains the Linux kernel (vmlinuz), the core of any
           : Linux operating system.  The kernel handles the basic functions
           : of the operating system: memory allocation, process allocation, device
           : input and output, etc.
Red Hat compatible kernel

Oracle Linux 5.6 also includes a Red Hat compatible kernel built directly from RHEL source. It's already installed, so booting it is a matter of editing /etc/grub.conf

[root@localhost ~]# rpm -qa | grep kernel-2.6.18
kernel-2.6.18-238.el5
Red Hat compatible kernel with bug fixes by Oracle

Finally, Oracle Linux 5.6 includes the Red Hat compatible kernel with critical bug fixes from Oracle. You can review the patches here. This kernel can be install directly from the DVD or from ULN if you're an Oracle Linux support customer.

Yum access to Unbreakable Linux Network (ULN)

Also new in this release is yum support for Unbreakable Linux Network.

 

On Yum support for Unbreakable Linux Network (ULN)

Recently, the ULN team added Yum support. This means that anyone running Oracle Linux 5 registered with ULN can now use yum instead of up2date to download and install packages. If you have already run a full update since Oracle Linux 5.6 was released on January 20th 2010, you should already be able to use yum against ULN.

If you are running Oracle Linux 5 and want to enable ULN yum support without updating any other packages, install yum-rhn-plugin as follows. This assumes your system is already registered with ULN:

# up2date --install yum-rhn-plugin

With that installed, you can immediately being using yum. For example:

# yum repolist
Loaded plugins: rhnplugin, security
repo id                   repo name                               status
ol5_x86_64_latest         Oracle Linux 5 Latest (x86_64)          enabled: 4,647
repolist: 4,647

# yum info oracle-validated
Loaded plugins: rhnplugin, security
Installed Packages
Name       : oracle-validated
Arch       : x86_64
Version    : 1.1.0
Release    : 3.el5
Size       : 60 k
Repo       : installed
Summary    : Verifies and sets system parameters based on Oracle validated configuration
           : recommendations for OEL5
License    : GPL
Description: This package verifies and sets system parameters based on Oracle validated
           : configuration recommendations for Oracle Enterprise Linux Release 5 Files
           : affected: /etc/sysctl.conf, /etc/security/limits.conf, /etc/modprobe.conf,
           : /boot/grub/menu.lst. For changes to modules, this package installation will modify
           : module paramters and re-insert.

Available Packages
Name       : oracle-validated
Arch       : x86_64
Version    : 1.1.0
Release    : 7.el5
Size       : 23 k
Repo       : ol5_x86_64_latest
Summary    : Verifies and sets system parameters based on Oracle validated configuration
           : recommendations for OEL5
License    : GPL
Description: This package verifies and sets system parameters based on Oracle validated
           : configuration recommendations for Oracle Enterprise Linux Release 5 Files
           : affected: /etc/sysctl.conf, /etc/security/limits.conf, /etc/modprobe.conf,
           : /boot/grub/menu.lst. For changes to modules, this package installation will modify
           : module paramters and re-insert.

# yum update

...

If you're new to yum, see this overview of basic yum commands. Enjoy.

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