Here are some general steps to control system logging in a ServiceNow production instance:
Check the various log levels and set the log level to minimum in your prod.
Review the different log levels available, such as Debug, Info, Warn, and Error.
Regularly purge old log records to free up database space and improve performance if doable.
If you have custom scripts or business rules that generate logs, review them to ensure that logging is done in a appropriate way. Minimize the use of unnecessary log statements in scripts, and only log information that is essential for troubleshooting or auditing.
