Pat Allan on 26 Jul, 2012 08:11 PM
My understanding of the error is that it's related to PostgreSQL - there's too many connections to your database. Perhaps it could be related to the number of workers you're running, both web and job processes? Each delta index job will require a connection, and if there's more of them running at any one time, plus each web worker, plus other tools, I guess that could add up…
So, how many workers are you running, and how often are you seeing delta jobs occur (and how often do they fail, too)?
Odd that it only crops up with the delta indexing… I'd expect to see it with the full index task occasionally as well.