Is there a session analyzer tool for Oak? The one referenced in this article  only seems to work for CRX in lower version.
Looking at a recent heap dump, we seem to have trouble with sessions not closing properly and are trying to narrow down where it's coming from.
Yeah, that's what the message sounds like. I think this error actually occurs when AEM is slowly dying (GC can't keep up). But what sort of error message would I look for then to point me to session leaks?