Will dm_clean job remove audit trial and dmr_content entry of the documents or just the orphan content is removed from filestore ?
dmclean deletes only orphaned objects. If you want to delete audit trails you have to use dm_auditmgt
how about dmr_content table? Will that get cleaned up by some other job ?
dmclean does cleanup the dmr_content tables.
Orphaned objects in Documentum are basically represented in the dmr_content tables. So when the dm_clean job cleans up orphan, it is removing rows in the dmr_content tables.