on 03-05-2015 8:18 PM
Hello All!
I've been searching for an answer to the question of whether regularly scheduled (as in monthly) restarts of a HANA system are considered necessary or not. We typically do this for our non-HANA systems but perhaps in-memory computing has no need for it?
Thank you in advance!
Minsan
Hi Minsan,
There is no such recommendation for regular restart of HANA instance or compute nodes every month...
We had gone live late last year and did not see any reason for a planned restart except during the Support pack upgrades on HANA system...
Having said that you may come across a situation such as HANA not responding which may lead to an unplanned restart of HANA Instance and this can happen for any reason....
On the Suse Linux Operating system we never had to reboot any compute node(we have a distributed system with 4 nodes) and it works well
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Thank you Lars and Sunil,
You have confirmed my suspicions and we will not be implementing scheduled reboots.
Thanks,
Minsan
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Nope, you don't need or should do that.
Actually, you shouldn't "bounce" any of your other SAP related systems like that as it will invalidate the caches of the databases and the application servers.
Upon restart of these systems, the performance will be worse since all data has to be read from disk again - which is unnecessary.
- Lars
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