The IntroscopeEnterpriseManager.log file on the MOM contains many of the following format errors:
[ERROR] [Harvest Engine Pooled Worker] [Manager] Unable to process data for Time: 1390302615000, Frequency: 15s, Count: 0 java.lang.NullPointerExceptionthere are no such errors reported on the collectors
Enabling DEBUG logging by setting
log4j.logger.Manager=DEBUG, console, logfile
in the file IntroscopeEnterpriseManager.properties file will provide additional information on the error:
SuperDomain/WP|myagent|WP61|my_WebSphere_Portal|WebSphere Portal|Portlets|VertragskontextNavigation:Average Response Time (ms)
The solution in this situation is to remove the following files from the product\enterprisemanager\plugins folder on the MOM
An internal issue has been raised to make the installation instructions for installing the Powerpack on a cluster take this into account.