OIM 11gR2: How to Roll back A Published Sandbox

 
If your OIM is messed after publishing your sandbox, then here is what you can try to fix the issue.
 
1. Login to Enterprise Manager

2. In Application Deployments select oracle.iam.console.identity.self-service.ear or oracle.iam.console.identity.sysadmin.ear link.

3. Right Click and select MDS Configuration (from the drop-down)

4. At the bottom of the screen choose "Runtime MBean Browser" (under the Advanced Configuration section)

5. The right side of the screen should refresh and then click on the "Operations" tab.

6. Scroll down and identify the MBean operation "listMetadataLabels" and invoke it (choose the one that takes no parameters).
Select the sandbox pre-create to which you want to restore and copy it to the clipboard.

For example the value you might copy might look something like - Creation_IdM_test_09:25:00

7. Now go back to Operations by clicking Return.

8. Find the MBean operation "promoteMetadataLabel" (the first one in the list)

9. Invoke the "promoteMetadataLabel" MBean operation and enter the value saved to the clipboard in step 6.

10. Restart OIM.
 
Now, if your issue is still not fixed, then I will recommend looking at /file/User.xml file to see if all UDFs are properly defined or not.
 
References:
 

OIM 11gR2: How to Roll back A Published Sandbox (Doc ID 1496179.1)