Perl is required for Cobol processes. PeopleBooks 8.58 states you must install Perl before running any Cobol. https://docs.oracle.com/cd/F25245_01/psft/index.html . Here is the list of process types: https://docs.oracle.com/cd/F25245_01/psft/pdf/pt858tprs-b122019.pdf .
Perl should not be a process type but it is used within Cobol processes.
In one of my previous projects, we have used a shell script to call Perl programs. you can try that.