Issue with the apm_bridge_inventory queue building without emptying and then getting into a hung state.
This happens when the UIM hubs were rebooted for scheduled OS maintenance.
Insufficient memory allocation for the APMGTW probe
Release : 20.3
Component : UIM - APMGTW
The memory allocations for the APMGTW probe was increased from -Xms32m -Xmx1g to -Xms64m -Xmx2g. This resolved the issue