what tool? what is the hash value of those statements? zero? if so then some tools (e.g. Confio Ignite) treat them as " DDL or commit ", but actually those could be dbms_jobs, in addition to commits.
We have some monitoring tools like long running query for 2 hrs etc , One of our long running query alert was showing a customized application having sql text COMMIT as running more than 2hrs. We found out mutiple session sometimes having the same sql text. considering considerable IO on server.