If you want to roll back a successful Java Home or Oracle Home rollout, create a workflow as described in Create a Patching Workflow for a Domain, Clusters, or Servers.

When creating the workflow:

• If you are rolling back Oracle Home, use the original (earlier) version of Oracle Home as the target version in the Rollout Oracle Home field and select the is Rollback check box.
• If you are rolling back Java Home, in the Java Home field, specify the original (earlier) version of Java Home that you want to roll back to.