DBconsole won't restart after change hostname

[sillyVM]

Hi all,
I have a problem, after I change the hostname of the machine, the dbconsole will not restart. It says OC4J Configuration issue. /home/oracle/oracle/product/10.2.0/db_1/oc4j/j2ee/OC4j_DBConsole_XXXX.XXX.com_orcl not found.

XXXX.XXX is my new host.Domain.com address.

So I tried this,
emca -config dbcontrol db -repos create
but I can not give a DBSNMP password, this wouldn't work
then i tried this,
emca -deconfig dbcontrol db -repos drop
This will give me an error says database instance is not available. But it is running with listner up. anyway I can reconfigure the server? it's running on a ubuntu linux. Thank you.

 

[sillyVM]

I have the problem resolved. I did
emca -deconfig dbcontrol db -repos drop
emca -config dbcontrol db -repos create

drop and created dbconsole. The problem was the database isn't started the corrected way. I started it now using dbstart script and everything worked.

 

[aking]

Maybe a bit late now but just FYI. I had exactly this problem a few months ago, got in touch with oracle support and they gave me similar commands to run but i couldn't run them cos i didn't know the dbsnmp password.
(which i think is not actually set during a default install, so if you don't set it yourself - which i didn't, you can run into this problem).

A friend told me the 5 second fix, which was to run the dbca config assistant, this wizard allowed me to re-set dbsnmp password, then it all worked. Mind you i have a windows setup, dunno if same tricks work on linux