Migrating to exadata with zero downtime all izz oracle. Reduce risk with oracle exadata patching micore solutions. Nov 06, 2011 when you have a exadata machine in the lab and you are testing lot of different things or giving handons training to production dba on lab exadata to familiarize them with exadata patching, one has to frequently start from scratch i. Here are the concepts of exadata patching to make exadata dba life easy. Here are the concepts of exadata patching to make exadata dba life easy patching database is a common task for a remote dba. About upgrading to oracle linux 7 on exadata servers. In 2009 they came out with exadata v2 with sun hardware, added smart flash cache and now oltp recommended in 2010 oracle completed the acquisition of sun and they came out with x22 and x28 history of exadata.
The utility requires root or sudo administration privileges. Enable and start services on target node services move back and begin accepting new connections 6. I should point out that while i have heard people refer to comet as a baby exadata, i. In this blog i describe the zero downtime option approach which is part of software update manager 2. Mar 28, 2017 in the mos note exadata patching overview and patch testing guidelines doc id 1262380. It is supported to run different exadata versions between servers. This article describes how you can do an effective exadata troubleshooting from the command line and show some tools which you can used. Software patching is critical for solid security and. Oct 25, 20 the latest quarterly full stack patch was released on october 17th for exadata. Most of my exadata customers have acquired 2 nonfull racks, which makes. The downtime minimization tool for dualstack only considers the pi dualstack and uses a lean clonebased concept with copyback technique abap applications, especially the erp system with db sizes in range of several terabytes. This section explains how to apply a patch to oracle database exadata cloud service. But how can i monitor if it is effectively used or not. This content majorly based on the article top 7 ways of reducing patching downtimes for apps by steven chan and few other supporting articles.
This chapter will look at exadata patching in depth, starting with the various types of patches to be applied on exadata, the ways each of the patches are applied, and options to make patching as painless as possible. Ensuring regular software patching and maintenance should be an imperative for every enterprise. Reducing patch downtime in oracle ebs oracle worklog. When you patch the grid infrastructure, all the databases running on the node you will patch the grid. Management process ms will communicate with cellcli to maintain the configuration on the system. How to patch an exadata part 6 timing official pythian blog. For those who dont know what the patchmgr utility is. Oracle rac rolling patch upgrade using opatch see section 14. Select 10% of the entire storage use only 1% of the data it gets to gain performance, the db needs to shed weight. Zero downtime migration to oracle exadata using oracle goldengate 3 executive overview oracle exadata database machine offers a complete, optimized package of software, servers, and storage, and delivers unbeatable performance and scalability for all your database applications. Oct 23, 2011 when you have a exadata machine in the lab and you are testing lot of different things or giving handons training to production dba on lab exadata to familiarize them with exadata patching, one has to frequently start from scratch i. Latest exadata quarterly full stack patch oracle enterprise. Noninteractive shell issue for database host minimal pack recently i set about patching exadata storage server software to from 11.
After patching of the compute node 1 of an exadata machine, the final step in the patching process is to run the following command. Oracle also requests that you log a platinum patch event sr the service request in my oracle support for more detailed instructions on opening a patching sr, see. General exadata patching question oracle community. Enhanced lightsout patching for exadata storage cells. Oracle exadata interview questions and answers july 2 june 1. Nov 16, 2014 exadata storage is managed by cellcli command line utility. This short video shows a quick demonstration on exadata provisioning using oracle enterprise manager c. After all, exadata is just an oracle database which happens to be able to intelligently communicate with its storage to avoid unnecessarily moving too much data around. Exadata patching cell server exadata certification. This patch contains all of the latest recommended patches for the exadata database machine. Exadata patching download, extract, prepare lets go through the exadata machine patching procedure in bullet points based on our patching experience. Oracle exadata patches can be applied in rolling manner while the database.
If you continue browsing the site, you agree to the use of cookies on this website. Dec 02, 2011 as we know about oracle exadata, the exadata rack has a different components, like cisco switch, kvm, power distribuion unit, etc and we only are responsible for patching the database servers usually referenced as compute nodes, storage servers usually referenced as cell nodes and the infiniband switches. This topic explains how to use the dbaascli utility to perform patching operations for oracle grid infrastructure and oracle database on an exadata db system. Unable to start crs stack on exadata compute node after using. The backup option and patching would then be much easier to do. Designed to prevent exadata from reading data blocks unnecessarily, its purpose.
Dxenterprise when you need zero downtime for sql server. Sumanta mazumder enterprise cloud architect cognizant. Expect quarterly bundle patches for the storage servers and the compute nodes. You need to work with database network team to run oeda. With all of these variables, how can you properly manage the environment and work towards zero downtime for sql server.
Unable to start crs stack on exadata compute node after. Changes to the logical structure or the physical organization of oracle database objects, primarily to improve performance or manageability. Accenture in india hiring exadata administration in. Rolling patching method dont required application downtime. All without causing any service outages or loss of session data for the enduser.
Overview patching an oracle applications environment is a major maintenance activity which will generally account to significant percentage of planned downtime of production environments. This exadata v1 was based on hp hardware this version was really marketed to big data warehouse shops. Exadata is very power full, highly optimized and highly available data warehouse and oltp environment machine introduced by oracle. Patching provides customers peace of mind that known security vulnerabilities are mitigated, thus maintaining an indepth defense posture. The other components infiniband switches, cisco ethernet. Recently i had performed an exadata x6 bear metal install and i thought it will be a good idea to share my experience with all of you. Here are the concepts of exadata patching to make exadata dba life easy patching database is a common task for a remote dba, but when we talk about exadata patching it involves lot of complications. I would like to see virtual management machines that can scale storage well with zero downtime. How to patch an exadata part 1 official pythian blog. Several customers have found that the dbnodeupdate.
Standardization is generally a first step followed by consolidation of sql server instances. The latest quarterly full stack patch was released on october 17th for exadata. For all other cases, you initiate the oracle platinum services remote patch installation by contacting oracle. Testing these changes is much easier on exadata due to the standardized configurations within each generation. To minimize downtime during patching of nonrac databases out of place patching can be used. In the mos note exadata patching overview and patch testing guidelines doc id 1262380. In non rolling fashion, all database and real application will be down and then patching will be done on cell. How to measure exadata smartscan efficiency blog dbi. Developed patching and automation tool to reduce downtime for system outage. Issues and challenges featuring freelyavailable information. Zero downtime zdt patching allows you to roll out distributed patches to multiple clusters or to your entire domain with a single command. In this article,we will see how to list the storage objects and how to stopstart the cell services using the cellcli. In this blog you learn how to get zero downtime option of sum. Most of the components can be patched while databases are running requiring little or no downtime compared to nonrolling patches but the overall length of time to complete the rolling patches is longer.
As we know about oracle exadata, the exadata rack has a different components, like cisco switch, kvm, power distribuion unit, etc and we only are responsible for patching the database servers usually referenced as compute nodes, storage servers usually referenced as cell nodes and the infiniband switches. In this document we will discuss various options that can be utilized to reduce the patching downtime of oracle applications environments. Recently i have been involved migrating multiterabyte database to exadata with zero downtime. Patch database home software, update grid infrastructure home software, exadata dbnode update 4. The motivation of zdo is to perform maintenance events i. Repeat steps on next node 24 application continuous availability fully automatic when using. But also, on exadata there are cumbersome maintenance activities like patching. Jan 07, 2016 can i patch my exadata storage cells rolling. These i consider the most important points about exadata patching. Here are the concepts of exadata patching to make exadata. It can be done simultaneously on all the system at a time. Mar 11, 2015 the downtime is reduced mainly to a restart and subsequent manual steps. Exadata database machine administration l2l3 support database administration, patching and upgrade need to work in 24x7 rotational shifts may need to work in a secured bay where no camera phone allowed sound technical knowledge to troubleshoot database related issues.
The direct scaling is a feature that has room for improvement. Let me make one thing clear it was not literally zero downtime but close to zero. Troubleshooting an exadata environment on the command line. In this course, you will be introduced to oracle database exadata cloud service.
A thread on otn forum about exadata came to the following question. Exadata cellcli command line utility1 part 4 unixarena. Zero downtime migration to oracle exadata using oracle goldengate. Cellcli utility can be launched by user celladmin or root. Zero downtime rolling maintenance for patches and patch set updates. This section explains how to apply a patch to oracle database exadata cloud service, and roll back the patch as necessary. Nonrolling downtime is required to apply the patch. Here are the concepts of exadata patching to make exadata dba. December 2nd, 2014 if your organization is like most, youve probably been asked to do a whole lot more with a whole lot less. The activitiy can be scheduled up to one week before the installation, allowing on each cell. Reduce risk with oracle exadata patching and upgrades posted on.
With great power comes great responsibility one of the biggest ongoing responsibilities that comes after commissioning an exadata. Jan, 2017 recently i have been involved migrating multiterabyte database to exadata with zero downtime. By franck pachot september 23, 2014 database management, oracle no comments. Oracle database exadata cloud machine version na and later information in this document applies to any platform. It is possible to achieve zero downtime patching and upgrades page 10. Exadata patching rolling vs nonrolling umair mansoobs blog. So it is time to share my experience and findings from applying the bundle patch 6. Zero downtime for oracle ebusiness suite on oracle exalogic. Oracle out of place patching reduces database downtime dadbm. I publish this article to show that systematic exadata performance troubleshooting techniques arent fundamentally different from existing nonexadata techniques, especially the starting point of troubleshooting. Andy colvin has already got a really good post on the hardware components that are included in the oracle database appliance along with pictures of the bits and bobs inside the chassis. Andy colvin august 14, 2012 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Complete support for oracle exadata oracle exadata is the bestinclass, integrated platform for all of your database application needs an enterpriseready solution that offers extreme performance. This is exadata patching demystified by enkitec lp on vimeo, the home for high quality videos and the people who love them.
Sep 12, 2015 the more components a system has, the more challenging its maintenance becomes. You need a complete, integrated support service that matches this standard and keeps your systems delivering for your business. How to patch an exadata part 3 grid and database oh. Here addr is the sending mail id which is used to send status of patching and addr1,addr2,addr3 are receiving mail id to receive the status of patching. Exadata installation guide exadata install process got much simpler with elastic configuration. When you have a exadata machine in the lab and you are testing lot of different things or giving handons training to production dba on lab exadata to familiarize them with exadata patching, one has to frequently start from scratch i. This post is about describing it unique features in form of tutorials. First, the oracle exadata patch has 3 different components that should be patched. Step1 first note down the current image version of cell by executing. After some posts focussed on the administration and management aspects of the oracle exalogic engineered system in combination with enterprise manager 12c cloud control and ops center 11g12c, its time to tell you a little more about patching the exalogic machine.
Oracle exadata marries storage with computation through a fast, reliable network, and patching all of these seems daunting. Exadata patching best practices and lessons learned. Troubleshooting exadata v2 smart scan performance tech. Patching exadata machine bulk exadata patching after more than 11 year from the launch oracle exadata machine has become popular on many companies across industries, making administrators, developers and final users almost unanimously satisfied about performance and availability.
Patching complete stack of exadata including compute nodes, infinibands, storage servers on full. Oracle out of place patching reduces database downtime february 12, 2016 by kirill loifman 3 comments to minimize downtime during patching of non. Exadata model comparison full rack database server 8 x dl360 g5 8 x sun fire x4170 1u 8 x sun fire x4170 1u 8 x sun fire x4170 m2 1u 2 x sun fire x4800 5u cpu 2 x intel quadcore processors 2 x quadcore intel xeon e5540 2. We also had to perform the patching at a local database center with secured u.
Well november came around quickly when i started blogging i promised myself that i would at least try to share my exadata findings once a month. I was testing and documenting the process for one of my client and wanted to automate this as much as possible, as in past people. Exadata offers many features to improve performance smart scans, offloading, infiniband internal network but the one feature not often mentioned is the storage index. Reduce risk with oracle exadata patching and upgrades. Initially planned to write a article for entire patching activity for all database machine components in single post but it will look bit nasty so thought to write a post for each database. Oracle maa for the oracle database exadata and the. Rolling patch can be applied on one by one component without downtime. There are several docs in my oracle support about these patchings. Exadata patching download, extract, prepare exadata. Jul 03, 2017 rolling patching method dont required application downtime. Successfully took engagement for oracle engineered system exadataexalogic. You can apply this approach to any oracle patch starting from oracle database 11g 11. Jun, 2011 this patching could be as simple as applying a oneoff patch to fix a specific bug to as huge as applying a maintenance pack. Zero downtime option of sum zdo is available on request.
If you are new to exadata patching you should hopefully find some important points below. For more details, refer to my oracle support note titled database machine and exadata storage server 11g release 2 11. The downtime minimization tool for dualstack only considers the pi dualstack and uses a lean clonebased concept with copyback technique. For my first time posting here on the pythian blog, i would like to share some of my tipsnotes about patching oracle exadata, based on my experiences and not less important, research and googling.
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