RE: Oracle Book Mal-practice...
- From: "Goulet, Richard" <Richard.Goulet@xxxxxxxxxxx>
- To: <robertgfreeman@xxxxxxxxx>, "Oracle-L Freelists" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 22 May 2009 12:45:34 -0400
Robert,
Some old myths will continue into eternity, this probably being
one of them. Now I'll admit to liking indexes in a different tablespace
from the data, but for a whole other reason, that being maintenance and
sizing (I've become a real fanatic at locally managed uniform extent
tablespaces). But on the other hand, even with SAN's, disk caches,
large SGA's etc... A sysadmin can create a reason for following the old
myths. I just had a recent experience of that with a san that's just
mirrored, not stripped. Performance was poor because one drive set was
being pounded. I moved one tablespace containing only table data to
another drive & things are now flying.
BTW: I don't write books. Principally because I don't like
writing and secondly because I make mistakes myself. And I sure would
not want some young poor soul following me on some of those blunders.
Humm, maybe that's a book that should be written, a "How to mess
up Oracle in one easy step"!!!
Dick Goulet
Senior Oracle DBA
PAREXEL International
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Robert Freeman
Sent: Thursday, May 21, 2009 9:11 PM
To: Oracle-L Freelists
Subject: Oracle Book Mal-practice...
So, I'm reading a particular book tonight. I don't want to say which one
it is at the moment because I know one of the authors and I want to make
sure that this author did not write this chapter.
My question is, what constitutes Oracle Book Writing mal-practice (and I
pray I've never committed it). Certainly mistakes crop up in books all
the time, I'm as guilty as any writer of this. This chapter I'm reading
though, in an effort to get the reader to doing something quickly, does
not lay any foundation, skips critical steps and actually prompts them
to do what I consider some very dangerous things.
It would be one thing if the book said, "Look, this is not the way you
should do this in production." but it does not. In this chapter, a very
junior DBA might well follow the instructions and, having successfully
completed everything, think that they are done. The truth, a nasty
truth, is that all they have done is taken some very big risks and they
have some nasty gottya's coming down the pike.
In my mind, this isn't a simple mistake. This isn't an editorial
mis-step. This is someone trying to make something seem easy and leaving
out some very sailient instructions without any warning.
Very bothersome.... For your Junior DBA's all I can say is buyer beware.
Get yourself a good mentor to go with all these books.
Cheers all and buyer beware...
RF
Robert G. Freeman
Oracle ACE
Author:
OCP: Oracle Database 11g Administrator Certified Professional Study
Guide (Sybex)
Oracle Database 11g New Features (Oracle Press)
Portable DBA: Oracle (Oracle Press)
Oracle Database 10g New Features (Oracle Press)
Oracle9i RMAN Backup and Recovery (Oracle Press)
Oracle9i New Features (Oracle Press)
Other various titles out of print now...
Blog: http://robertgfreeman.blogspot.com
The LDS Church is looking for DBA's. You do have to be a Church member
in
good standing. A lot of kind people write me, concerned I may be
breaking
the law by saying you have to be a Church member. It's legal I promise!
:-)
http://pages.sssnet.com/messndal/church/parachurch.pdf
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