On 21/09/16 11:41, Joshua Harlow wrote: >> tl;dr this appears to have been around forever (at least since we >> switched to using a pure-Python MySQL client) and is almost certainly >> completely unrelated to any particular release of oslo.db. Update: Mike was kind enough to run this one to ground and it looks like we could get a fix in sqlalchemy 1.1.0: https://bitbucket.org/zzzeek/sqlalchemy/issues/3803/dbapi-connections-go-invalid-on > I've seen something similar at https://review.openstack.org/#/c/316935/