Actually connectors (especially UIM connector) do not have the capability to retry DB connection. Now it is restarting when it looses connection to the database.
It seems that this behaviour leads to inconsistencies in SOI console view, e.g. it can contain alarms what have already been deleted at the source system. For acceptance of SOI it is evident to avoid such inconsistencies.
This idea has been opened on CA/Broadcom request.