Provides access to configuration properties passed in Properties objects.

Hibernate has two property scopes:

• Factory-level properties are specified when a org.hibernate.SessionFactory is configured and instantiated. Each instance might have different property values.
• System-level properties are shared by all factory instances and are always determined by the Environment properties in getProperties().

Environment properties are populated by calling System#getProperties() and then from a resource named /hibernate.properties, if it exists. System properties override properties specified in hibernate.properties.

The org.hibernate.SessionFactory obtains properties from:

• system properties,
• properties defined in a resource named /hibernate.properties, and
• any instance of Properties passed to Configuration#addProperties.

Configuration properties

Property	Interpretation
hibernate.dialect	name of org.hibernate.dialect.Dialect subclass
hibernate.connection.provider_class	name of a org.hibernate.engine.jdbc.connections.spi.ConnectionProvider subclass (if not specified heuristics are used)
hibernate.connection.username	database username
hibernate.connection.password	database password
hibernate.connection.url	JDBC URL (when using java.sql.DriverManager)
hibernate.connection.driver_class	classname of JDBC driver
hibernate.connection.isolation	JDBC transaction isolation level (only when using java.sql.DriverManager)
hibernate.connection.pool_size	the maximum size of the connection pool (only when using java.sql.DriverManager)
hibernate.connection.datasource	datasource JNDI name (when using javax.sql.DataSource)
hibernate.jndi.url	JNDI javax.naming.InitialContext URL
hibernate.jndi.class	JNDI javax.naming.InitialContext class name
hibernate.max_fetch_depth	maximum depth of outer join fetching
hibernate.jdbc.batch_size	enable use of JDBC2 batch API for drivers which support it
hibernate.jdbc.fetch_size	set the JDBC fetch size
hibernate.jdbc.use_get_generated_keys	enable use of JDBC3 java.sql.PreparedStatement#getGeneratedKeys() to retrieve natively generated keys after insert. Requires JDBC3+ driver and JRE1.4+
hibernate.hbm2ddl.auto	enable auto DDL export
hibernate.default_schema	use given schema name for unqualified tables (always optional)
hibernate.default_catalog	use given catalog name for unqualified tables (always optional)
hibernate.transaction.jta.platform	name of org.hibernate.engine.transaction.jta.platform.spi.JtaPlatform implementation