Cleanup trx.log and trx_audit.log

Dear all,

Integration service restarts take nearly an hour in our environment. After renaming above files (approx 5GB) IS created new versions and restarted in nearly ten minutes.
How can I schedule a regular cleaning-job. According to some other threads (from 2003) in this forum the sweep trx service will not reduce file size.

Can anyone help here avoiding new groth?

Thanks a lot four your help.