We've just noticed that our "User Profile Service Application - User Profile Incremental Synchronization" timer job has been failing in our SharePoint 2010 environment for quite some time. This job runs everyday at 1:00 am. When I go to Central Administration > Job History, I can see job history items back to 02/15/15, but nothing further back than that. I'd like to be able to see the last time this timer job ran successfully, which I'm assuming was before 02/15/15.
Does anyone know for how many days timer job history is kept? And, is there anyway to retrieve timer job histories older than this?