Ring trace is generated with error "U00000001 NO DATA (end of file, invalid key, no message...)"

Products

• CA Automic Workload Automation - Automation Engine
• CA Automic One Automation

Issue/Introduction

Occasionally the following trace is generated with an error like:
20200527/123429.583 -  U00015006 System forced memory trace dump.
20200527/123429.583 -    EXIT UCUMELD        RET: 0000000000  TIME: 0000,00232  RETTEXT=' '
20200527/123429.583 -  U00003631 Dump caused by: 
20200527/123429.583 -  U00000001 NO DATA (end of file, invalid key, no message...)
20200527/123429.583 -  U00011801 Error in Server routine 'UCDVAR_R', Server: '<systemname>#WP012' AE system: '<systemname>'.
20200527/123429.583 -  End of ringtrace

Cause

Defect

Resolution

This is fixed in 21.0.  The issue will still persist in 12.3.

These types of ring trace files shouldn't be ignored but if the error matches the example above it can be disregarded