1- Deactivate the alarm_enrichment probe.
2- Right click on alarm_enrichment probe then click Edit.
3- On the Arguments field change:
-Xms64m -Xmx1024m -Dfile.encoding=UTF-8 -jar ../lib/alarm_enrichment.jar
to
-Xms1024m -Xmx2048m -Dfile.encoding=UTF-8 -jar ../lib/alarm_enrichment.jar
4- Activate the alarm_enrichment probe.