This document describes the metrics related to DSA usage of CICS that can be used in CTHRESH, and that allows the use of the Resourc1 argument type.
Use the following command in Sysview to get a list of variables that can be used in CTHRESH and that allows the use of the Resource attribute:
VARS (to display a list of metrics or variable definitions for all SYSVIEW subsystems. )
SELECT SUBGROUP EQ STORAGE AND RESOURC1 EQ TRAN
A list of variables will appear. in the DESCRIPTION column, it is possible to see if the variable is related to DSA.
For example, DSAUSE is a variable to monitor the storage in use below 16M and that can be used in CTHRESH definitions.