Activation State is set as FAILED when Restarting the Admin Server

After you upgrade the domain component configurations and start the Admin server, the activation state is set as FAILED.

Caused By: oracle.security.am.install.AMInstallException: Invalid Simple
Mode Artifacts at
oracle.security.am.install.startup.AMKeyStoreValidator.execute(AMKeyStoreValid
ator.java:70)at
oracle.security.am.install.startup.OamInstallTopologyConfigListener.doMandator
yValidations(OamInstallTopologyConfigListener.java:114)

To solve the error, complete the following steps:

1. In the 11g environment, open to the oam-config.xml file and copy the value of sslGlobalPassphrase.
2. In the 12c environment, open to the oam-config.xml file and replace the value of sslGlobalPassphrase with the value that you copied from the 11g environment.

For more information about how to import or export oam-config.xml from database, see Doc ID 2310234.1.