Hibernate production use warning

This warning comes up evertime i use hibernate.

Mai 11, 2015 3:42:20 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH000402: Using Hibernate built-in connection pool (not for production use!)

Do i have to be worried about this? The tables are created without problem, but this warning makes me unsure about my hibernate.cfg.xml configuration file.

Thx in advance for your support.