Out of memory exceptions may be thrown when filter updates occur, such as when any of the run buttons are clicked on the Resource Membership Update page, or when any scheduled Symantec Management Platform or Patch filter update schedules.
Examples include the NS.Always Refresh Collection Update or the NS.Microsoft schedules, etc.Other symptoms include very high memory utilization and/or high CPU utilization by the Altiris Service - aexsvc.exe.
This is due to the growth of the CollectionMembershipChanges table and how it is processed
This issue has been resolved with the release of Symantec Management Platform 7.0 SP2 HF2. See KB47826
Symantec Management Platform 7.0