Start Enterprise Manager After Hostname Change

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Some time we need to change hostname or ip address  of machine , the result is no listner and unable to start Enterprise Manager.

To resolve this issue  thre are some simple steps we need to follow-

1. first change your host name in listner.ora file
2. execute following command to reconfigure enterprise manager-
    
emca -deconfig dbcontrol db
emca -config dbcontrol db -repos recreate
 
or
 
emca -deconfig dbcontrol db -repos drop
emca -config dbcontrol db -repos create 
 

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