In reply to Sri.

Thank you, Sri, for your comment. You have 3 options: 1) you request sysadmin to do this cleanup for you; 2) you work with your sysadmin to get access to your Metadata and Midtier directories from your compute tier; 3) you create shell scripts that are run on schedule on your Metadata and Mid-tier servers and do similar cleanups. There might be other options available in your organization, but you can start with the ones that I listed.