By Rene Kundersma-Oracle on Sep 30, 2012
Oracle recently announced an Exadata Hardware Update. The overall architecture will remain the same, however some interesting
hardware refreshes are done especially for the storage server. Each cell will now have 1600GB of flash, this means an X3-2
full rack will have 20.3 TB of total flash ! For all the details I would
like to refer to the Oracle Exadata product page: www.oracle.com/exadata
Together with the announcement of the X3 generation. A new Exadata release, 126.96.36.199 is made available. New Exadata systems will be shipped with this release and existing installations can be updated to that release. As always there is a storage cell patch and a patch for the compute node, which again needs to be applied using YUM.
Instructions and requirements for patching existing Exadata compute nodes to 188.8.131.52 using YUM can be found in the patch README. Depending on the release you have installed on your compute nodes the README will direct you to a particular section in MOS note 1473002.1.
MOS 1473002.1 should only be followed with the instructions from the 184.108.40.206 patch README. Like with 220.127.116.11.0 and 18.104.22.168.1 instructions are added to prepare your systems to use YUM for the first time in case you are still on release 22.214.171.124.2 and earlier. You will also find these One Time Setup instructions in MOS note 1473002.1
By default all compute nodes that will be updated to 126.96.36.199.0 will now have the UEK kernel. Before 188.8.131.52.0 the 'compatible kernel' was used for all compute nodes other than X2-8. For 184.108.40.206.0 customer will have the choice to replace the UEK kernel with the Exadata standard 'compatible kernel' which is also in the ULN 220.127.116.11 channel. Recommended is to use the kernel that is installed by default.
One of the other great new things 18.104.22.168 brings is Writeback Flashcache (wbfc). By default wbfc is disabled after the upgrade to 22.214.171.124. Enable wbfc after patching on the storage servers of your test environment and see the improvements this brings for your applications.
Writeback FlashCache can be enabled by dropping the existing FlashCache, stopping the cellsrv process and changing the FlashCacheMode
attribute of the cell. Of course stopping cellsrv can only be done in a
- drop flashcache
- alter cell shutdown services cellsrv
- again, cellsrv can only be stopped in a controlled manner
Going back to WriteThrough FlashCache is also possible, but only after flushing the FlashCache:
- alter cell flashcache all flush
Last item I like to highlight in particular is already from a while ago, but a great thing to emphasis: Oracle Platinum Services. On top of the remote fault monitoring with faster response times Oracle has included update and patch deployment services.These services are delivered by Oracle Advanced Customer Support at no additional costs for qualified Oracle Premier Support customers.
- 126.96.36.199.0 README
- Exadata YUM Repository Population, One-Time Setup Configuration and YUM upgrades 1473002.1
- Oracle Platinum Services