RE: Planned Maintenance - Believe or not ?
- From: "Lange, Kevin G" <kevin.lange@xxxxxxxxxx>
- To: <Oracle-L@xxxxxxxxxxxxx>
- Date: Fri, 22 Jun 2012 12:26:56 -0500
I agree with Joel. 24x7x365 . Unless there is a degredation , I really
see no reason to take things down. Especially with most of the patches
on various things being "In-Place" patches these days.
That being said, I still like a nice cold backup of a database now and
again. Maybe its just because of doing this so long that you remember
the times when it was essential to have those backups. I don't know.
It just gives me a warm, fuzzy feeling to know I have it.
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of
Joel.Patterson@xxxxxxxxxxx
Sent: Friday, June 22, 2012 11:56 AM
To: sreejithsna@xxxxxxxxx; Oracle-L@xxxxxxxxxxxxx
Subject: RE: Planned Maintenance - Believe or not ?
I run single instances, for quite awhile, and with several companies and
OS's. For oracle databases, my analogy is that it should be treated
like a fighter jet plane. These planes are built to run 24hours/day
and operate better that way. They actually require more or completely
different maintenance schedule(s) depending on how long they stay idle.
Analogously, oracle doesn't like to span startups, with things like
historical reports (Ent mgr), v$ views, and just the extra warm up that
happens upon start up to mention some. They do get shutdown once in a
while for maintenance reasons, but no schedule.
In the old days, rebooting was done for various reasons. Back in the
early 90's, on HP, and Dell, the sysadmins wanted a reboot
'the server' on Sunday night believe it or not, (thus the databases went
with that). Even running on windows I did not have a scheduled reboot.
Having said that, some people 'keep' a scheduled window for rebooting
for ease of administration, (whether for the app or server, or database)
-- they always have a window for maintenance and therefore scheduling
the maintenance is easier.
Now applications that run in windows boxes sometimes need it, especially
with mistakes like memory leaks and the like.
Joel Patterson
Database Administrator
904 727-2546
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Sreejith S Nair
Sent: Friday, June 22, 2012 12:34 PM
To: Oracle - L
Subject: Planned Maintenance - Believe or not ?
Hi friends,
The question is about the planned maintenance activities you do on a
server level or database level. The activity I am referring to is
rebooting the node and restarting database instances , crs stack etc. we
had this routine from sometime back, but now management asks why should
we do it. I have heard from many people that they usually do a server
reboot when the uptime goes more than 6 months or so. Now,the management
is saying why we have to do it. The plain explanation is that a software
is designed to run and to handle a load , then it should run for ever if
nothing on it is changed.
I would like to know whether any one has something like a planned
maintenance activity where you reboot servers and reboot instances every
6 months or so ?
Regards,
Sreejith
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