我正在使用带有 Hibernate 的 C3P0 连接池来执行一些 JDBC 操作。但是，使用一段时间后，我收到“关闭连接”（SQL 错误：17008，SQLState：null）错误。
我正在使用org.hibernate.jdbc.Work接口来执行我的操作：
public class ClassThatDoesWork implements Work {
@Override
public void execute(final Connection connection)
throws SQLException {
doSomeWork();
//should connection be closed here?
}
}
我的问题是：connection作为参数传递给execute()方法的对象应该在该方法结束时关闭还是 Hibernate 自动处理？
编辑这些是使用的 Hibernate 和 c3p0 参数：
hibernate.connection.driver_class=oracle.jdbc.driver.OracleDriver
hibernate.connection.pool_size=10
hibernate.dialect=org.hibernate.dialect.Oracle9iDialect
hibernate.connection.provider_class=org.hibernate.connection.C3P0ConnectionProvider
hibernate.show_sql=false
acquireIncrement=3
acquireRetryDelay=500
acquireRetryAttempts=5
breakAfterAcquireFailure=false
checkoutTimeout=0
connectionTesterClassName=com.mchange.v2.impl.DefaultConnectionTester
debugUnreturnedConnectionStackTraces=false
dataSourceName=irrelevantDB
identityToken=irrelevantDB
idleConnectionTestPeriod=0
initialPoolSize=3
maxConnectionAge=0
maxIdleTime=7200
maxIdleTimeExcessConnections=0
maxPoolSize=20
maxStatements=50
maxStatementsPerConnection=0
minPoolSize=5
numHelperThreads=3
propertyCycle=0
testConnectionOnCheckin=false
testConnectionOnCheckout=true
unreturnedConnectionTimeout=0
hibernate.c3p0.min_size=5
hibernate.c3p0.max_size=20
hibernate.c3p0.timeout=10
hibernate.c3p0.max_statements=50