Hi Cynthia,
I don't know any UC4 script that can accomplish this but with a simple SQLI variable you can get this information. Just create a SQLI VARA object and insert a query like the one below :
select count(*) from ah where AH_OType in ('JOBS','JOBF','JOBP','SCRI','EVNT','CALL','JOBG','JSCH') and trunc(AH_TimeStamp1)=trunc(sysdate -30)
Just make a script run a get_var on this variable on the first day of month and that's all.
It's just an example considering some executable objects.
Other option is to create a DB job if you need a more complex set of clauses.