Hiberante - Problemi di connessioni

[Mitele]

Ho rieseguito il processo e ho ottenuto la seguente informazione:

Informazioni: Hibernate connection pool size: 20
apr 29, 2014 9:53:01 AM org.hibernate.connection.DriverManagerConnectionPr ovider configure
Informazioni: autocommit mode: false
apr 29, 2014 9:53:01 AM org.hibernate.connection.DriverManagerConnectionPr ovider configure
Informazioni: using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://vodatest.rclou.prv:3306/vodafta?zeroDateTimeBehavior=convertToNull
apr 29, 2014 9:53:01 AM org.hibernate.connection.DriverManagerConnectionPr ovider configure
Informazioni: connection properties: {user=12345, password=****}
apr 29, 2014 9:53:01 AM org.hibernate.cfg.SettingsFactory buildSettings
Avvertenza: Could not obtain connection metadata
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientC onnectionException: Data source rejected establishment of connection, message from server: "Too many connections"


che vuol dire Hibernate connection pool size: 20?