Oracle Enterprise Manager Node Discovery

[adnanans]

I have a problem registering nodes with OEM.(Ver 2.2). All the nodes have registered IP addresses and linked directly through the internet (Each has DNS address). All the nodes are running Oracle 8i EE on Windows 2000 Adv server.

Whenever i run DISCOVER NODE from OEM console, it discovers some nodes and other not. I tried the same from different PCs and found the same. The discovery of nodes from different nodes is different like from PC 'A' it
discovers PC 'B' & PC 'D' but not PC 'C' & 'F' and from PC 'B' it discover 'A' & 'C' but not 'D' & 'F'. (All the PC's registers there own node successfully).


The following error is generated when the discovery fails:

Discovery failed: VNI-4045 : Cannot contact agent. Agent is not running on the node.

The above message is quite ridiculous since the discovery of node from other PC's verified the agent to be running.


Can any body have a solution????????


Regards,
Adnan

 

[seagull69]

Hello,

Maybe it's a good idea to investigate the network side of the process of node discovering. Can you connect to the server(s) in question using Net*8 ? (with an entry on the local tnsnames.ora file) ? Connections from different computers may take different routes. A good idea is to push up the sql*net trace level, try a connection and look at the generated trace file.

HTH

Seagull69

 

[raygg]

The message is referring to the Oracle agent on the node. You have to turn it on.