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1.3.2. C3P0 Connection Pool

C3P0 is an open source JDBC connection pool that is distributed with Hibernate. C3P0 is available in the lib/ directory. Hibernate uses org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider for connection pooling if the hibernate.c3p0 connection properties are set.
The following table contains hibernate.c3p0 connection properties to set to use the c3p0 connection pool in Hibernate:
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Table 1.7. Configuration Properties for the C3p0 Connection Pool
Property Details
hibernate.c3p0.min_size The minimum number of concurrent connections per connection identity.
hibernate.c3p0.max_size The maximum number of concurrent connections per connection identity.
hibernate.c3p0.timeout The period an idle connection is allowed to remain in the connection pool before it is closed and removed from the pool.
hibernate.c3p0.max_statements The maximum size of the statement cache.
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