JDBC communication channel error

Hi Experts,

     I working on  SAP PI 7.31  proxy -> jdbc asynchronous scenario.

when checking comm channel in rwb it showing in green status. but when ping JDBC comm channel it showing below error.

and when checking rwb->message monitoring->message component->Adapter Engine<Host> -> select scenario ->audit log it showing following error.

JDBC driver was installed.

Thanks,

Dipak