Monitoring C3P0 connection stats

[Carol Li]

Hi Guys,

Recently, we frequently encounter one a below error in our Confluence DC. We have 4 nodes and distributed on two servers, this error only occurs on our node1(docker container1) and node2(docker container2) on server1. After reading the docs in google and confluence Knowledge Base in Atlassian, this most likely a c3p0 issue. I intend to monitor the c3p0 connection status on my server1, but I don't know how to do that, and the only document I found is https://wiki.evolveum.com/display/midPoint/Monitoring+c3p0+state+HOWTO , but in our case,  it's a cluster mode, how could I monitor the specific nodes to know the c3p0 status? 

APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!

Thank you very much