The Network Adapter could not establish the connection org.hibernate.exception.GenericJDBCException: Could not open connection

Question

The Hibernate Program runs for some transactions and after that it cannot establish connections. The Exception is as following:

WARN: SQL Error: 17002, SQLState: null
Feb 01, 2012 11:47:10 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: Io exception: The Network Adapter could not establish the connection
org.hibernate.exception.GenericJDBCException: Could not open connection
Feb 01, 2012 11:52:43 AM org.apache.catalina.core.StandardContext reload
INFO: Reloading this Context has started

Answer 1

检查您的类路径设置：它应该包含oracle-jdbc6.jar的位置。