The metric ASIOTX is the current number of address spaces with type "OTX."
To show the current OTX address spaces, issue the following command: ACTIVITY ,OTX
You may or may not wish to have an exception alert based on the number of OTX address space.
If not, the metric is still able to provide you with statistics about the number of OTX address spaces over time.
To see a plot of OTX count over the last hour, using the command: PLOT MVS ASIOTX
The OTX address space is a Unix or USS process. Using the SYSVIEW command UPROCESS, you can easily relate the OTX address spaces or processes to the parent using the Pid and PPid (Parent Pid).