Hello there,
We are running JIRA Server, since last month we are experiencing very very frequently ACTIVITY STREAM is dead on the dashboards. Every time we have to restart the instance service to get it back working and it goes off again within few hours or sometimes within few days.
Even experiencing high spikes in the DB connection graph, please find attached screenshot of the DB connection graph.

Please help us to resolve these issues ASAP.
Regards,
Sami Ahmed Shaik.