Engine makes PV search requests for PVs already connected and archived

[TBirkeHZB]

We were facing a problem with our channel access gateway infrastructure being flooded with PV search requests every 5 minutes.

Analysis of logfiles identified the ArchiverAppliance as the root-cause.

Although being connected to all (~75000) PVs, it sent out around 25000 search requests for ~3000 PVs within a few seconds every 5 minutes.

A full restart of the appliance solved the problem.
Tracking down the root-cause for this behaviour is difficult, but is most probably related to the fact, that we just went into operation after a long shutdown. Many subsystems were offline for a while and also maintenance work on the network infrastructure has been done.