Oracle 9ias Enterprise Manager error

Question

Hi guys,
I'm getting the following error when i access my Enterprise Manager:
Servlet error: Renderer failed: java.lang.NoClassDefFoundError
It's my first access to the EM.
The server is instaled in a Windows 2000.
Someone can help me with this error?
Thanks

Answer 1

Hi Fabio,
You have one emwebsite running per ORACLE HOME. Having said that you should have 1 em for the Infra and 1 for the midtier.
To access the corresponding emwebsite, you need to start the corresponding em process.
This is how it can be done:
From the Services >
Start the <..>ASControl process
From the cmd like:
GOTO OH/bin> emctl start iasconsole
To start ONLY the agent:
OH/bin> emctl start agent
From the error, you have mentioned it is difficult to conclude the exact cause of the error.
Can you please provide the following informations:
1) What type of install is it?
(e.g. Infra on so and so machine + portal & wireless midtier on..)
2) Can you please check the corresponding OH/sysman/log directory and scan the log files. Incase, you are unable to understand then please post the corresponding errors in this post.
I suggest, you stop your instance and start it in order.
This is what you can try:
Stop you instance (All processes)
In this Order --
em of the midtier,
process manager of the midtier
em of the infra
process manager of the infra
database
tnslistener
Check for runaway processes. If found kill it.
When all done start it in the following order:
tnslistener
database
process manager of the infra
em of the infra
process manager of the midtier
em of the midtier
Thanx,
Chetan.