RE: all time worst question I have been ever asked as a DBA
Date: Fri, 29 Jul 2011 11:31:51 -0400
To me, that’s just another argument for raw devices and/or ASM . ☺
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Upendra N
Sent: Friday, July 29, 2011 8:37 AM
Subject: RE: all time worst question I have been ever asked as a DBA
Here is the worst conversation I heard:
Conversation between Ops Support guy (recently outsourced) and a DBA who is being woken up in the middle of the night.
Ops Support: Database xxx doesn't respond. can you take a look?
DBA: Do you see any errors or queries doesn't respond?
Ops Support: Earlier there were a few alarms generated, we took care of it. After sometime db doesn't respond.
DBA: What alarms were they?
Ops Support: Alarms for free space. We took care of it before it filled up. DBA: What did you do?
Ops Support: We compressed a few files. DBA: What files did you compress?
Ops Support: We compressed a few large files under /u03/oradata/xxx and /u04/oradata/xxx DBA: Oh S**t.
PS: We ended up doing a PITR.
> Date: Thu, 28 Jul 2011 22:00:13 -0600
> Subject: Re: all time worst question I have been ever asked as a DBA
> From: kellyn.potvin_at_ymail.com
> To: pythianbrinsmead_at_gmail.com; Marco.Gralike_at_amis.nl
> CC: Chris.Stephens_at_adm.com; andrew.kerber_at_gmail.com; oracle-l_at_freelists.org
> Are you telling us you had valuable information and held back?? (Said with a Southern Bell lilt) Well I jus never heard of such a thang! :)
> Kellyn(aka Skippy)
> Mark Brinsmead <pythianbrinsmead_at_gmail.com> wrote:
> >I sat through the OCP Oracle 11g course a few months back, and noted that
> >they do, indeed, still tell you to name your redo logs with ".LOG".
> >I nearly interrupted the instructor to mention that this is an unsafe
> >practice (having seen a number or databases trashed by some do-gooder
> >"deleting some huge log files" in response to a filesystem storage page).
> >Then I remembered that the purpose of the course is to teach people how to
> >pass the exam, not how to be a DBA.
> >If it comes up on the exam, you will undoubtedly be expected to say that
> >".LOG" is the best extension to use for online redolog members.
> >On Wed, Jul 27, 2011 at 1:26 PM, Marco Gralike <Marco.Gralike_at_amis.nl>wrote:
> >> BTW
> >> I also never use those file extensions anymore, but then again DBCA still
> >> has that practice and I would not be surprised if it turned up in OCP
> >> manuals etc.
> >> I once created an enhancement request saying that "this new APEX *core*directory, regarding naming is probably not a good idea to implement".
> >> They didn't get the point, or I didn't got my point across, that old unix
> >> admin methods / people (maybe still also on linux nowadays) have a practice
> >> to delete from time to time *core* files and *core* directories on their
> >> filesystems…
> >> From: "Stephens, Chris" <Chris.Stephens_at_adm.com>
> >> Date: Wed, 27 Jul 2011 17:02:52 +0200
> >> To: Marco Gralike <marco.gralike_at_amis.nl>, "andrew.kerber_at_gmail.com" <
> >> andrew.kerber_at_gmail.com>, Oracle-L <oracle-l_at_freelists.org>
> >> Subject: RE: all time worst question I have been ever asked as a DBA
> >> Which is the #1 reason I no longer allow redo logs to end in ‘.log’! J****
> >> ** **
> >> I have that as a check implemented in a procedure that runs each night to
> >> ensure every database in our environment complies with a few standards that
> >> I don’t consider to be debatable.****
> >> ** **
> >> *From:* oracle-l-bounce_at_freelists.org [
> >> mailto:oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org>] *On
> >> Behalf Of *Marco Gralike
> >> *Sent:* Wednesday, July 27, 2011 9:57 AM
> >> *To:* andrew.kerber_at_gmail.com; ORACLE-L
> >> *Subject:* RE: all time worst question I have been ever asked as a DBA****
> >> ** **
> >> Be happy that he asked. Sometimes they just delete log files because they
> >> need the space.****
> >> ------------------------------
> >> *Van:*oracle-l-bounce_at_freelists.org [oracle-l-bounce_at_freelists.org] namens
> >> Andrew Kerber [andrew.kerber_at_gmail.com]
> >> *Verzonden:* dinsdag 26 juli 2011 21:38
> >> *Aan:* ORACLE-L
> >> *Onderwerp:* all time worst question I have been ever asked as a DBA****
> >> So, I am getting this error on one of our virtual Linux servers:
> >> ORA-00210: cannot open the specified control file
> >> ORA-00202: control file: '/u01/app/oracle/datafiles/devdb/control01.ctl'
> >> ORA-27086: unable to lock file - already in use
> >> Its probably due to a stale NFS lock. The question from my sys admin:****
> >> -rw-r----- 1 oracle oinstall 10076160 Jul 22 13:33 control01.ctl****
> >> can that file just be removed****
> >> Ok, I am a little frustrated with him...
> >> --
> >> Andrew W. Kerber
> >> 'If at first you dont succeed, dont take up skydiving.'****
> >> CONFIDENTIALITY NOTICE:
> >> This message is intended for the use of the individual or entity to which
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> >> and exempt from disclosure under applicable law. If the reader of this
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> >-- Mark Brinsmead
> > Senior DBA,
> > The Pythian Group
> > http://www.pythian.com/blogs