The CA SYSVIEW CTEMPSTG display command will allow customers to identify the High Water Mark
of Temporary Storage usage. The Pct Used and TSMAIN Storage fields should provide the information
you are looking for.
Pct Used will be the percentage of auxiliary temporary storage used.
TSMain Storage will display the current amount of MAIN temporary storage
in use, and the maximum amount of MAIN temporary storage
(high water mark), that was used.