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c3p0 is an easy-to-use library for augmenting traditional (DriverManager-based) JDBC drivers with JNDI-bindable DataSources, including DataSources that implement Connection and Statement Pooling, as described by the jdbc3 spec and jdbc2 std extension.
Note: Current development snapshots are now available on github.
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DatabaseLicense
Eclipse Public License, GNU Library or Lesser General Public License version 2.0 (LGPLv2)Follow c3p0:JDBC DataSources/Resource Pools
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User Reviews
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Hey Steve, I am getting a Null Pointer Exception and this error in my stacktrace com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137) If you can help me it would be great. I have added these properties : <property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property> <property name="c3p0.min_size">5</property> <property name="c3p0.max_size">20</property> <property name="c3p0.timeout">1800</property> <property name="c3p0.max_statements">1000</property> and the jar for c3p0 as well.
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Good stuff
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C3p0 works wonderful.
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java.sql.SQLWarning: 已忽略额外的 URL 元素。 at com.ibm.as400.access.JDError.getSQLWarning(JDError.java:327) at com.ibm.as400.access.AS400JDBCConnection.setProperties(AS400JDBCConnection.java:2757) at com.ibm.as400.access.AS400JDBCConnection.setProperties(AS400JDBCConnection.java:2734) at com.ibm.as400.access.AS400JDBCDriver.prepareConnection(AS400JDBCDriver.java:807) at com.ibm.as400.access.AS400JDBCDriver.initializeConnection(AS400JDBCDriver.java:698) at com.ibm.as400.access.AS400JDBCDriver.connect(AS400JDBCDriver.java:285) at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:146) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:195) at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:184) at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool 1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:200) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1086) at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1073) at com.mchange.v2.resourcepool.BasicResourcePool.access 800(BasicResourcePool.java:44) at com.mchange.v2.resourcepool.BasicResourcePool ScatteredAcquireTask.run(BasicResourcePool.java:1810) at com.mchange.v2.async.ThreadPoolAsynchronousRunner PoolThread.run(ThreadPoolAsynchronousRunner.java:648)
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excellent project! we use this in L2J Server since years ;)