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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Oracle and High Availability solutions
"is it true to state that only one server at any one time is accessing ( =
or can access ) the Oracle database."
This is a true statement. We are on a Compaq TruCluster without OPS. You = don't want more than 1 instance accessing the same database at the same = time, unless you are in and OPS environment.
Jay Hostetter
Oracle DBA
D. & E. Communications
Ephrata, PA USA
>>> <Steve.Parker_at_lis.co.uk> 05/08/00 06:44AM >>>
Dear All,
Consider High Availability (HA) Oracle systems, i.e UNIX and
MC/ServiceGuard / TruCluster / HACMP etc
where the Oracle database and binaries are held on a 'highly resilient'
shared disk array which can be
accessed from 2 or more servers.
When either the HA Service providing Oracle is gracefully 'bounced' from
one
server to the other, or is restarted on an alternate server due to the =
main
server
crashing etc, is it true to state that only one server at any one time is
accessing
( or can access ) the Oracle database.
Oracle parallel server is NOT being used !
In all cases, 'simple' scripts are used by the HA Service to stop and =
start
Oracle,
which normally mimic what an operator would do anyway.
I would have thought that 2 sets of binaries accessing the same database would have disatrous consequences.
Any thought / experience / comments please .....
Thanks
Steve Parker
Technical Consultant
LIS
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