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Any AIX networking gurus (related to Grid Control)?

From: Thomas Jeff <jeff.thomas_at_thomson.net>
Date: Fri, 17 Jun 2005 20:33:08 -0500
Message-ID: <428BC948616D534DA0860EDF33F542AB17A5EA@INDYSMAIL02.am.thmulti.com>


I'm in between a rock and a hard place. I'm trying to install Oracle Grid Control
10.1.0.3 against a 10.1.0.3 repository on AIX 5.2. After the install, the Console
screen would show two targets -- the host and the agent -- but the status/metrics
were always empty. After checking logs and noticing the targets.xml did not quite
look right -- I contacted Oracle Support. In a nutshell, Support said that due to
the DNS configuration, the Agent discovery code thought that the host was part of
a cluster configuration, which the host is most definitely not.

The particulars: hostname: indysdb05t, old primary DNS name: indysdb05tg1,
alias: indysdb05t. The DNS change recommended by Support was to simply reverse
the primary and alias so that the primary name resolved to the hostname and the
alias being the old primary DNS name.

For some reason, the Agent code was using some 'get host by name' call that picked
up the indysdb05t, then when it resolved this and got indysdb05tg1, it seems to
have confused it to the point it kicked in some cluster detection code which
messed up the discovery process.

Anyway, after the DNS change, the Agent discovery/Console began working correctly,
much to the displeasure of the SA staff, which had been insisting all along that
the Oracle code was simply buggy.

The DNS configuration set up by the SA staff is to use the hostname as the alias,
with all applications (batch FTP, tnsnames.ora, etc) using this alias. The primary
DNS name is basically the NIC card. That way, if something changes (a new NIC card,
network error, etc), all they have to do is change the primary DNS name to which the
alias resolves, and the applications do not need to change their code. The SA staff
says this is the way DNS configurations are normally done. Not being a DNS/networking
maven, I cannot completely assess their argument.

So, I've got Oracle Support saying our DNS has issues, and the SA staff saying the
Oracle Agent code is buggy. If you are an AIX shop, I'm curious as to how your
DNS configuration is defined.

Thanks.



Jeffery D Thomas
DBA
Enterprise Database and Middleware Services Thomson, Inc.

Email: jeff.thomas_at_thomson.net

Documentation available at:
http://gkmqp.tce.com/tis_dba


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Received on Fri Jun 17 2005 - 21:38:19 CDT

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