Hi Team,
I am using hibernate version 5.4.23 and c3p0 jar version 0.9.5.5 to connect Oracle 12c database .
i ve given below configuration details for the c3p0 connection pool.
If we are not doing any database opeartions for long time after that I am getting closedConnection and SQLRecoverableException with ConnectionTimeOut error while using application.
Below is an error which I’m getting in application.
at: com.mchange.v2.log.slf4j.Slf4jMLog$Slf4jMLogger$DebugLogger.log(Slf4jMLog.java:207)
com.mchange.v2.c3p0.impl.NewPooledConnection@3748bfab handling a throwable.
java.sql.SQLRecoverableException: IO Error: Connection timed out
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:821)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:983)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1168)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3666)
at oracle.jdbc.driver.T4CPreparedStatement.executeInternal(T4CPreparedStatement.java:1426)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3713)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1167)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:1471)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:57)
at org.hibernate.id.enhanced.SequenceStructure$1.getNextValue(SequenceStructure.java:95)
at org.hibernate.id.enhanced.NoopOptimizer.generate(NoopOptimizer.java:40)
at org.hibernate.id.enhanced.SequenceStyleGenerator.generate(SequenceStyleGenerator.java:523)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:115)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:720)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:706)
Caused by: java.io.IOException: Connection timed out
at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:197)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:378)
at oracle.net.nt.TimeoutSocketChannel.read(TimeoutSocketChannel.java:174)
at oracle.net.ns.NSProtocolNIO.doSocketRead(NSProtocolNIO.java:555)
at oracle.net.ns.NIOPacket.readHeader(NIOPacket.java:258)
at oracle.net.ns.NIOPacket.readPacketFromSocketChannel(NIOPacket.java:190)
at oracle.net.ns.NIOPacket.readFromSocketChannel(NIOPacket.java:132)
at oracle.net.ns.NIOPacket.readFromSocketChannel(NIOPacket.java:105)
at oracle.net.ns.NIONSDataChannel.readDataFromSocketChannel(NIONSDataChannel.java:91)
at oracle.jdbc.driver.T4CMAREngineNIO.prepareForUnmarshall(T4CMAREngineNIO.java:764)
at oracle.jdbc.driver.T4CMAREngineNIO.unmarshalUB1(T4CMAREngineNIO.java:429)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:407)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:268)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:655)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:270)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:91)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:807)
… 26 more
at: com.mchange.v2.log.slf4j.Slf4jMLog$Slf4jMLogger$DebugLogger.log(Slf4jMLog.java:207)
Testing a Connection in response to an Exception:
java.sql.SQLRecoverableException: IO Error: Connection timed out
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:821)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:983)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1168)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3666)
at oracle.jdbc.driver.T4CPreparedStatement.executeInternal(T4CPreparedStatement.java:1426)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3713)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1167)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:1471)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:57)
at org.hibernate.id.enhanced.SequenceStructure$1.getNextValue(SequenceStructure.java:95)
at org.hibernate.id.enhanced.NoopOptimizer.generate(NoopOptimizer.java:40)
at org.hibernate.id.enhanced.SequenceStyleGenerator.generate(SequenceStyleGenerator.java:523)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:115)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55)
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:720)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:706)
at code.db.jpa.oracle.ORACLEem.Insert(ORACLEem.java:81)
at org.vn.circle.server.db.DB.Insert(DB.java:175)
Kindly help me how can i resolve this.