I see nothing wrong with bouncing a database instance. The real question
is why? (will it effect production, users, physical and logical files
that the database or environment need, data, etc). If you have a wide
maintenance window, and you have a good idea of the time it takes to do
so, and the risks of doing so, then it should be ok. Risk assessment
(risk and severity of problems occurring during and after a bounce vs.
problem severity if not bounced). Which is the safest with less severity
is what I would do?
Just my pretty penny worth.
Shaz
..........................................................
Christopher M. Salee
Data Engineer
Siemens VDO Automotive Corporation
Service & Special Solutions
5265 Rockwell Drive NE
Cedar Rapids, Iowa. USA. 52402
Phone: (319) 743-4584
Cell: (319) 329-3405
E-mail: chris.[Email address protected]
-----Original Message-----
From: Anthony Molinaro
[mailto:oracledba-ezmlmshield-x86509559.[Email address protected]
Sent: Wednesday, January 04, 2006 11:03 AM
To: LazyDBA Discussion
Subject: bouncing the db?
hello dba's,
I have a question that I am hoping you can help with.
We have different rdbms at my company and as expected
each one is treated differently.
from our experience (well, from the suggestion of sql server
consultants)
its good to bounce the sql server databases every so often.
now, I've never done this with oracle but I am wondering
if any of you have.
I am ofcourse aware of the various drawbacks to bouncing
the db (such as flushing the caches making all new sql hard parsed)
but it would be done at our maintenance window (so, no worries
about users and their sql).
over the last 6 months we've hit some bugs with oracle that neither
I nor oracle support have been able to really fix (we're talking
severity 1 tar here, so, very senior support analysts working with
me to resolve various problems as we got nowhere).
in some cases (magically) bouncing the db
(at the suggestion of support) has helped.
I'm not crazy about doing this all the time but if it saves me
from all-nighters and rebuilding production from standby via
failover (which is a total pain as our db's are ~1tb) then I'll do
it.
this would be a monthly thing or every other month.
so, we're talking 6 - 12 bounces a year.
any feedback (good or bad) would be appreciated.
thanks guys/gals,
Anthony
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