Getting error as "DevTest Workstation has run out of memory. Please either 1) Close unneeded screens,". SS attached below.
Have you tried to increase the memory heap for the Workstation?
If not and depending what is the memory available on your machine, open the Workstation.vmoptions file, under $LISA_HOME/bin/, and change the maximum memory to be allocated to 1G or 2G:
Save the vmoptions file and restart the Workstation.
Memory Settings - DevTest Solutions - 10.1 - CA Technologies Documentation
Hope it helps.
This page in the doc may be of help:
Retrieving data ...