Post Unix maintenance patch activity, apigee-postgresql has been dead and unable to bring up. Please check the attached postgresql log post restarting the service. Please help us on providing resolution for this.
Looks like your maintenance patch messed up en_US.UTF-8 locale at this node.
Do you have something like this in:
/opt/apigee/var/log/apigee-postgresql/pgstartup.log?