Re: Recovery Catalog vs Control File
Date: Fri, 29 Aug 2008 11:09:51 -0700 (PDT)
On Aug 29, 6:23 am, sybra..._at_hccnet.nl wrote:
> On Fri, 29 Aug 2008 06:07:42 -0700 (PDT), e..._at_chicagorsvp.com wrote:
> >I've read a lot about this concept, Recovery Catalog vs Control File.
> >I'm just looking for some real life experience comments.
> >I've always thought that using a recovery catalog only gives you yet
> >another instance to back up.
> >What are some of your experiences.......it'd help me make my
> >decision. Reading is not the same as getting real life comments......
> The problem with your question is it doesn't mention the database
> version you are using.
> RMAN has been revised with every release of Oracle, amongst others
> making the recovery catalog more and more optional.
> If you are on 9i, you will need a recovery catalog to recover your
> database through a resetlogs operation.
> This is becaused all history in a controlfile is virtually wiped out
> during a resetlogs and you don't have any info on the SCN of the last
> On 10g this is no longer required, as you can include the resetlogs
> scn in the file specification of your archivelog.
> So the key factor in answering this question is:
> - What operations *require* a recovery catalog
> - Am I planning to use those operations frequently.
Mostly agree with this, except if you have some reason to need an old archive log, it is quite a pain to do it without a catalog in 9i. Those situations are (or should be!) very infrequent, but kind of argues that infrequent operations mean you should use a catalog. I was on the nocatalog side until I had to go through that for real, wishing I had a catalog.
The OP says 10g now. The more I look at it the less sure I am about which way I want to go with the catalog. I'll have a standby machine eventually. I'm not convinced the default backup has enough redundancy for my tastes.
-- @home.com is bogus. "just look at the bright side, at least she'll be able to teach us to fish and hunt for our own food...after McCain sends our nation's economy and markets into a sinkhole." - sdsaneReceived on Fri Aug 29 2008 - 13:09:51 CDT