[ How To ] Reset the oc4jadmin password in R12

Step 1 : Login as Application User

Step 2 : cd $IAS_ORACLE_HOME/j2ee/home/config

Step 3 : cp -rp system-jazn-data.xml system-jazn-data.xml_orig

Step 4 : vi system-jazn-data.xml

Step 5 : edit the following section ::

>> the credentials part with "!" sign followed with the password

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[user]
[name]oc4jadmin[/name]
[display-name]OC4J Administrator[/display-name]
[description]OC4J Administrator[/description]
[credentials]!password123[/credentials]
[/user]

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Save this file...

and restart your OPMN Services

Refer : Metalink note-id :: 576587.1