[pgpool-general: 8175] Unable to acquire JDBC Connection

[Nikola(HM)]

Hello,

Our application use Pgpool in k8s with docker image pgpool/pgpool2, and 
our PostgreSQL nodes are on virtual machines.

When we tried to perform load test our application, we have received a 
lot of errors of application services that connect to database through 
Pgpool:

"Could not open JPA EntityManager for transaction; nested exception is 
org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC 
Connection"

If application connects to database directly  without Pgpool, this error 
does not appear.

Do you have any experience with such problem and could you tell why it 
occurs, i.e. why the service can't connect Pgpool and how to fix it?

Thanks in advance.

-- 
Regards,
   Nikola