OEM is not running after changing the host ip in Oracle10g !

Question

Dear Friends ,
I am installing Oracle10g in Linux RHEL 5 . After installing , I have to also configure OEM database control interface successfully . During installing I use IP '192.168.0.1' , and configure OEM using this ip . But after some times I need to change the host ip address only , then I cannot browse the OEM interface . It shows blank page and give the below error :
[oracle@app log]$ tail -10f emoms.log
2010-05-31 12:08:11,712 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.271 - Integration Class not found: oracle.tip.oem.central.instance.ProcessConnectInstanceIntg
2010-05-31 12:08:11,713 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.271 - Integration Class not found: oracle.webdb.admin.em.PortalIntegration
In this moment , would anybody plz tell me , How can I resolve the problem when ip of the host is changed or hostname is changed .
here I mention that , I already change ip into below files successfully :
- network interface
- listener
- /etc/hosts
Waiting for kind reply ... ...

Answer 1

Do not need recreate OEM repository.You have to need change some file`s context. try do following.
1.Go $ORACLE_HOME\<HOSTNAME>_<SID>\sysman\config then edit emoms.properties file. Change following parameters with properly(correct) values(using new IP address):
oracle.sysman.emSDK.svlt.ConsoleServerHost,
oracle.sysman.eml.mntr.emdRepServer,
oracle.sysman.eml.mntr.emdRepConnectDescriptor.
2. Go $ORACLE_HOME\<HOSTNAME>_<SID>\sysman\emd edit targets.xml file. Change
<Property NAME="MachineName" if different real name .
3. export ORACLE_SID=<SID>
emctl start dbconsole