Refresh and CleanUp the Environment Hub (PSEMHUB)

1. Symptoms
Java errors may occur when running jobs in Change Assistant, such as:

"Exception Java.lang.NullPointerException Caught in
Com.peoplesoft.pt.environmentmanagement.peer.PeerSupport.send()"

2. Cause
This is caused by corruption of Change Assistant's internal cache files.

3. Solution
To Clean up the PSEMHUB cache data you also need to ensure that you delete data from all the Agents and the Peers, you cannot just delete data from the PSEMHUB server.

You need to perform this cleanup on all Agents, Change Assistant (CA), Viewer and HUB, that will reinitialize everything for you.

a.) Make sure you stop the Agents, CA, Viewer, HUB before you delete these files or directories. After that you can restart them.

b.) For Agents, Viewer and Change Assistant:

Delete the following directories, under PS_HOME\PSEMAgent for Agents, under PS_HOME\PSEMViewer for the Viewer and under the Change Assistant directory for Change Assistant.

envmetadata/PersistentStorage
envmetadata/scratchpad
envmetadata/data/ids
envmetadata/transactions (if it exists)

For Agents and Change Assistant delete the following file:

envmetadata/data/search-results.xml

c.) For HUB

Delete the following directories under PS_HOME\webserv\peoplesoft\applications\peoplesoft\PSEMHUB
if your domain name is not 'peoplesoft' then change the above directory accordingly.

PSEMHUB\envmetadata\Scratchpad
PSEMHUB\envmetadata\PersistentStorage
PSEMHUB\envmetadata\transactions (if it exists)

Also delete all files and directories within:
PSEMHUB\envmetadata\data\*.* (files and directories.don't delete the data directory itself)