JDBC reserve connection is stuck up

[SunEasy Vtm]

Hi,

i was trying to connect from node js to db using jdbc.

node-jdbc

it is running fine and fetching results as well but, after some time(we never know) 12 hours or so, it will stuck up/hang at the jdbc.reserve statement.

here are my pool settings: "minpoolsize": 0,"maxpoolsize": 0

Please let  me know anything I am missing, why suddenly it stops when reserving connection?

Thanks