OAM Upgrade Fails With InvalidKeyException

Oracle Access Manager upgrade fails with InvalidKeyException if Java JSE Policy is not upgraded.

The following exception is displayed:
oracle.security.jps.JpsException: 
oracle.security.jps.service.keystore.KeyStoreServiceException: 
Failed to perform cryptographic operation
Caused by: java.security.InvalidKeyException: Illegal key size

To resolve this issue, upgrade the Java JSE policy using the instructions described in Upgrading Java JSE Policy.