-- Paul Baumgartel <[EMAIL PROTECTED]> on 04/01/02 14:48:23 -0800
> Hi everyone.
>
> I'm currently working at a client where the OFA standard has been (as
> they put it) "taken to the next level". I disagree with their
> approach, and I'd be interested to see what list members think.
>
> The client believes that any DBA (there are about 16 on staff) should
> be able to locate data files in any database without querying the data.
> To this end, mount points are named both /unnn (e.g., /u001) and /annn
> (e.g., /a001). "System" datafiles (system, temp, rollback tablespaces)
> go only on the /unnn mount points, and in particular, datafiles for
> certain tablespaces must go on certain mount points--for instance
> rollback tablespace files always go on /u004.
>
> "User" datafiles are allowed on /a001 and /a002, tables and indexes,
> respectively.
>
> To my mind, this standard changes the Optimal Flexible Architecture to
> the Sub-optimal Inflexible Architecture, and all just to avoid a data
> dictionary query. What do you think?
Well, since Oracle's suggested "u01" is so COMPLETELY
descriptive, I can't imagine changing it. Using anything
so confusing as the name of a database, instance or
project as the mount point or including things like "index",
"rollback", "tablespace" or "log" is also pretty meaningless
(unless of course someone does an "ls" to see them).
If you're willing to dump Oracle's suggested confusion,
separating the files out by mount point makes sense on
most systems since it allows better control over the
locatioin of data files and less hassle growing logical
volumes [unless, of course, you use Oracle's suggested
hardware raw volumes for all storage].
If the direcories fit under some heirarchy that reflects
the overall database orginization that certianly helps.
If the layout looks like /instancename/general_use or
/oracle/general_use/instance_specific_use.dbf you can
figure out most of it rather quickly: a single instance
can be clocked via ls -Rl /instancename in one or the
overall health of a multi-instance server can be clocked
via ls -Rl /oracle/ or ls -Rl /oracle/index (for example).
Trick is naming things in ways that reflect what's under
the directory and giving the flat files names that have
something to do with what they're used for.
--
Steven Lembark 2930 W. Palmer
Workhorse Computing Chicago, IL 60647
+1 800 762 1582
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author:
INET: [EMAIL PROTECTED]
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
