Exception while creating SessionFactory

Hibernate version:

Hibernate 3

Full stack trace of any exception that occurs:

[DEBUG Msg - com.mchange.v2.c3p0.impl.NewPooledConnection handleThrowable 430] com.mchange.v2.c3p0.impl.NewPooledConnection@ca2076 handling a throwable.
java.sql.SQLException: Unsupported feature
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
at oracle.jdbc.dbaccess.DBError.throwUnsupportedFeatureSqlException(DBError.java:689)
at oracle.jdbc.OracleDatabaseMetaData.getDatabaseMajorVersion(OracleDatabaseMetaData.java:4442)
at com.mchange.v2.c3p0.impl.NewProxyDatabaseMetaData.getDatabaseMajorVersion(NewProxyDatabaseMetaData.java:3678)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.hibernate.cfg.SettingsFactory.getDatabaseMajorVersion(SettingsFactory.java:293)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:76)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1881)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1174)

Plz tell me why is this issue coming up?

Thanx in advance

Can you describe the c3p0 and hibernate settings please?

Can you describe the c3p0 and hibernate settings please?

I am using hibernate 3.1.3
Following properties have been added in hibernate.cfg.xml file
for c3p0 configuration.
Please advice me if i have to add any other specific settings for c3p0.
I am using hibernate for the first time.

<property name="c3p0.acquire_increment">1</property>
<property name="c3p0.min_size">0</property>
<property name="c3p0.max_size">25</property>
<property name="c3p0.timeout">1000</property>
<property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>


All sessions are opened as per above settings even after this exception is thrown.