.解决方式

将数据库由Oracle切换到Mysql中，把数据库连接配置由xml中移到，启动时报错:

.: Table 'hibernate_example.all_sequences' doesn't exist

22:58:24,581 ERROR .:175 - could not get database metadata
.: Table 'hibernate_example.all_sequences' doesn't exist
	at .newInstance0(Native Method)
	at (:39)
	at (:27)
	at (:513)
	at (:377)
	at (:360)
	at (:978)
	at (:3887)
	at (:3823)
	at (:2435)
	at (:2582)
	at (:2526)
	at (:2484)
	at (:1446)
	at .(:151)
	at ..<init>(:69)
	at ..<init>(:62)
	at .(:170)
	at .<init>(:373)
	at (:1842)
	at (:23)
	at .invoke0(Native Method)
	at (:39)
	at (:25)
	at (:597)
	at $(:45)
	at (:15)
	at (:42)
	at (:27)
	at (:263)
	at .(:68)
	at .(:47)
	at $(:231)
	at $(:60)
	at (:229)
	at $000(:50)
	at $(:222)
	at (:300)
	at ..(:49)
	at (:38)
	at (:467)
	at (:683)
	at (:390)
	at (:197)

原因是在文件中没有将Oracle方言删除

 <property name="">.Oracle10gDialect</property>