on 02-25-2016 1:58 PM
Hi Experts,
maybe someone can help me.
What options / solutions are there in the market to make a SAP ERP system 7 × 24/365 available.
Also during maintenance and updates, there will be no downtime.
Would be glad if you could help me with this.
Perhaps you have already experience with it ...
Thanks in advance
Chris
Chris,
In addition to the nZDM solution that Thomas points to, you will want to investigate Rolling Kernel Switch. A good overview to get the concept is at .
The combination of classic clustered database server techniques (which are HW/OS/DBMS specific), RKS, and nZDM can theoretically get you very close to zero downtime for typical maintenance activities. nZDM can get you very close for major upgrades as well, but... probably not absolutely zero downtime. Still, you can make it so minimal that it's practically there, if you are willing to spend the money and overhead for the infrastructure to do it. The key is careful architecture planning up front.
Cheers,
Matt
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Hallo,
as Yüksel mentioned SAP has a near-zero-downtime-option which you can use when patching/upgrading a system.
Search for nzdm in the support portal or start with SAP Note 1678564 "Restrictions, Database-specific Settings, and Troubleshooting of nZDM/SUM".
Additional information regarding nZDM is also in the Update Guide, e.g. page 58 of document https://websmp204.sap-ag.de/~sapidb/011000358700000783532011E
Apart from that it's always a question of infrastructure, for example use Oracle DataGuard or RAC to make your Orcle database HA. Set up a HA cluster for your message/enqueue server and have multiple application servers.
Regards
Thomas
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Hello Christian,
You can install High Available systems (OS and DB) to make systems available 7 × 24/365.
For application maintenance and updates there are tools to minimize downtime but this does not mean 0 downtime.
As far as I know SAP has services for 0 downtime.
Someone from SAP can answer about this service.
Regards,
Yuksel AKCINAR
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