OEM: Error with Node Preferred Credentials

From: Anand .P <dev_at_null.com>
Date: Tue, 07 Oct 2003 21:21:17 +0530
Message-ID: <blum1d$2r5$1@news.vsnl.net.in>

Hi,

I am running Oracle 9.2.0.1.0 on Redhat Linux 8 at home. I installed this from a downloaded image from OTN.

The installation succeeded without errors (except for the ins_ctx.mk error, which I resolved as per www.puschitz.com).

I have 2 databases set up on my PC:
1. oemrep (the OEM repository created by emca) 2. v920 (A "play" DB with the sample schemas, created with dbca)

I am able to:

1. Startup/Shutdown the oemrep DB/instance
2. Start/Stop the listener
3. Start/Stop the OMS
4. Start the Intelligent Agent.
5. Start the OEM with the command "oemapp console &"
6. Connect to the repository as user "sysman"
7. Startup/Shutdown the v920 database from OEM, create users, tablespaces 

etc.

However, when I try to "backup" the v920 database, I get an error saying "...Preferred Credentials for node localhost.localdomain are either not set or are invalid..."

I read the documentation (OEM config, OEM admin guides), but they only say that the preferred credentials must be set. Nowhere do they specify "what" the preferred credentials should be.

I have tried every userid (and corresponding passwd) that I can think of: sys, system, oracle_admin, sysman, oracle, root.

But I keep getting the same error.

I searched this newsgroup archive in Google, and returned 1 match. The solution in that thread says

• BEGIN SOLUTION ***** You'll need preferred credentials for
  - the node: any Linux account with access to Oracle preferably in the
  dba group
  - the database: any account with SYSDBA privileges.
  
• END SOLUTION *****

But I have already tried it and it does not work.

Have I missed some configuration or setup step?

Thanks
Anand Received on Tue Oct 07 2003 - 10:51:17 CDT