The administrator password for each OC4J instance in the Cluster must be the same as the administrator password for the OC4J instance on which Application Server Control is running. So if you have something like home which is your admin instance and than you have oc4j_soa, oc4j_wsm, oc4j_gtwy and you have to change password of oc4jadmin then you have to perform following steps.
- Change oc4jadmin password for admin oc4j in cluster.
- Simply log in using the oc4jadmin user name and password, and then click Setup.
- On each node and oc4j edit ORACLE_HOME/j2ee/oc4j_instance_name/config/system-jazn-data.xml to update oc4jadmin password
<user>
<name>oc4jadmin</name>
<display-name>OC4J Administrator</display-name>
<guid>41A2E560C96711DABFD08D3BF8B780C4</guid>
<description>OC4J Administrator</description>
<credentials>{903}4nlfYYDwaqMJipVbGXuS2ce8egfwBPqp</credentials>
</user>
Modify credentials to say password123. Please remember to put ! as the exclamation point (!) ensures that the password will be encrypted in the configuration file.
<credentials>!password123</credentials>
Node:There is another approach of modifying with EM console where you go to Cluster Topology > <remote_oc4j> > Administration > Security Providers > Instance Level Security > Realms > click the number in the Users column. Click oc4jadmin and modify password. Return to the Cluster Topology page and restart the remote OC4J instance.


