We have been trying to get to the bottom of this error message for quite some time without much success. I'm wondering whether anybody else has any insights or ideas from troubleshooting this message in a similar environment.
Oracle 12c, ArcSDE Geodatabase version 10.3
ArcGIS Server 10.3 and/or 10.4 (single server site)
We see it on most or all services when they need to spin up a new instance. Hardware resources are not likely the culprit. What makes it difficult to troubleshoot is that I can't reproduce the error very consistently. We're looking at a lot of variables but so far without too much consistent success.