If you deploy and run the quickstart camel-jpa-binding, after a few minutes the connection pool is exhausted.
I tested with Oracle DB too and still the same problem.
I tested with Wildfly 8 too and it is working ok.

The exception meesage in the log file:

12:39:42,768 ERROR [org.apache.camel.component.quartz.QuartzEndpoint] (DefaultQuartzScheduler-

camel-jpa-retrieve-binding_Worker-8) Job DEFAULT.quartz-endpoint6 threw a JobExecutionException: : org.quartz.JobExecutionException: org.switchyard.HandlerException: java.lang.reflect.UndeclaredThrowableException [See nested exception: org.switchyard.HandlerException: java.lang.reflect.UndeclaredThrowableException]
at org.apache.camel.component.quartz.QuartzEndpoint.onJobExecute(QuartzEndpoint.java:140)
at org.apache.camel.component.quartz.CamelJob.execute(CamelJob.java:63)
at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
Caused by: org.switchyard.HandlerException: java.lang.reflect.UndeclaredThrowableException
at org.switchyard.component.bean.ServiceProxyHandler.handle(ServiceProxyHandler.java:216)
at org.switchyard.component.bean.ServiceProxyHandler.handleMessage(ServiceProxyHandler.java:109)
at org.switchyard.handlers.ProviderHandler$1.run(ProviderHandler.java:60)
at org.switchyard.handlers.ProviderHandler$1.run(ProviderHandler.java:58)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:549)
at org.switchyard.security.provider.DefaultSecurityProvider.runAs(DefaultSecurityProvider.java:174)
at org.switchyard.handlers.ProviderHandler.handleMessage(ProviderHandler.java:65)
at org.switchyard.bus.camel.processors.HandlerProcessor.process(HandlerProcessor.java:61)
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.switchyard.bus.camel.audit.FaultProcessor.process(FaultProcessor.java:45)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
at org.apache.camel.processor.TryProcessor.process(TryProcessor.java:113)
at org.apache.camel.processor.TryProcessor.process(TryProcessor.java:84)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.switchyard.bus.camel.audit.FaultProcessor.process(FaultProcessor.java:45)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:51)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109)
at org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:68)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:375)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:343)
at org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:233)
at org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:343)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:168)
at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:119)
at org.switchyard.bus.camel.ExchangeDispatcher.dispatch(ExchangeDispatcher.java:94)
at org.switchyard.bus.camel.CamelExchange.sendInternal(CamelExchange.java:238)
at org.switchyard.bus.camel.CamelExchange.send(CamelExchange.java:175)
at org.switchyard.component.camel.switchyard.SwitchYardProducer.process(SwitchYardProducer.java:110)
at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:129)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:448)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.loadbalancer.QueueLoadBalancer.process(QueueLoadBalancer.java:44)
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109)
at org.apache.camel.processor.loadbalancer.LoadBalancerSupport.process(LoadBalancerSupport.java:87)
at org.apache.camel.component.quartz.QuartzEndpoint.onJobExecute(QuartzEndpoint.java:136)
... 3 more
Caused by: java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy51.storeGreeting(Unknown Source)
at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:38)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at org.jboss.weld.proxies.StoreService$1366014918$Proxy$_$$_WeldClientProxy.storeGreeting(Unknown Source)
at org.switchyard.quickstarts.camel.jpa.binding.PeriodicServiceImpl.execute(PeriodicServiceImpl.java:51)
at sun.reflect.GeneratedMethodAccessor41.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.switchyard.component.bean.ServiceProxyHandler.handle(ServiceProxyHandler.java:182)
... 55 more
Caused by: org.switchyard.HandlerException: org.apache.camel.FailedToCreateProducerException: Failed to create Producer for endpoint: Endpoint[jpa://org.switchyard.quickstarts.camel.jpa.binding.domain.Greet?persistenceUnit=JpaEvents&transactionManager=%23jtaTransactionManager]. Reason: javax.persistence.PersistenceException: [PersistenceUnit: JpaEvents] Unable to build Hibernate SessionFactory
at org.switchyard.bus.camel.processors.ErrorHandlingProcessor.detectHandlerException(ErrorHandlingProcessor.java:62)
at org.switchyard.bus.camel.processors.ErrorHandlingProcessor.process(ErrorHandlingProcessor.java:48)
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.switchyard.bus.camel.audit.FaultProcessor.process(FaultProcessor.java:45)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
at org.apache.camel.processor.CatchProcessor.process(CatchProcessor.java:91)
at org.apache.camel.processor.TryProcessor.process(TryProcessor.java:113)
at org.apache.camel.processor.TryProcessor.process(TryProcessor.java:84)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.switchyard.bus.camel.audit.FaultProcessor.process(FaultProcessor.java:45)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:51)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109)
at org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:68)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:375)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:343)
at org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:233)
at org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:343)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:168)
at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:119)
at org.switchyard.bus.camel.ExchangeDispatcher.dispatch(ExchangeDispatcher.java:94)
at org.switchyard.bus.camel.CamelExchange.sendInternal(CamelExchange.java:238)
at org.switchyard.bus.camel.CamelExchange.send(CamelExchange.java:175)
at org.switchyard.component.bean.ClientProxyBean$ClientProxyInvocationHandler.invoke(ClientProxyBean.java:325)
... 67 more
Caused by: org.apache.camel.FailedToCreateProducerException: Failed to create Producer for endpoint: Endpoint[jpa://org.switchyard.quickstarts.camel.jpa.binding.domain.Greet?persistenceUnit=JpaEvents&transactionManager=%23jtaTransactionManager]. Reason: javax.persistence.PersistenceException: [PersistenceUnit: JpaEvents] Unable to build Hibernate SessionFactory
at org.apache.camel.impl.ProducerCache.doGetProducer(ProducerCache.java:407)
at org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:220)
at org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:343)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:184)
at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:124)
at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:110)
at org.switchyard.component.camel.common.handler.OutboundHandler.handleInOnly(OutboundHandler.java:157)
at org.switchyard.component.camel.common.handler.OutboundHandler.handleMessage(OutboundHandler.java:145)
at org.switchyard.handlers.ProviderHandler.handleMessage(ProviderHandler.java:77)
at org.switchyard.bus.camel.processors.HandlerProcessor.process(HandlerProcessor.java:61)
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63)
at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:77)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.switchyard.bus.camel.audit.FaultProcessor.process(FaultProcessor.java:45)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:91)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
... 90 more
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: JpaEvents] Unable to build Hibernate SessionFactory
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:954)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:882)
at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:58)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
at org.springframework.orm.jpa.LocalEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalEntityManagerFactoryBean.java:92)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
at org.apache.camel.component.jpa.JpaEndpoint.createEntityManagerFactory(JpaEndpoint.java:328)
at org.apache.camel.component.jpa.JpaEndpoint.getEntityManagerFactory(JpaEndpoint.java:180)
at org.apache.camel.component.jpa.JpaEndpoint.validate(JpaEndpoint.java:321)
at org.apache.camel.component.jpa.JpaEndpoint.createProducer(JpaEndpoint.java:112)
at org.apache.camel.impl.ProducerCache.doGetProducer(ProducerCache.java:402)
... 108 more
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Unable to open JDBC connection for schema management target
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.prepare(TargetDatabaseImpl.java:42)
at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:57)
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:133)
at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:101)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:470)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:879)
... 117 more
Caused by: java.sql.SQLException: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/ExampleDS
at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:146)
at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:66)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180)
at org.hibernate.tool.schema.internal.TargetDatabaseImpl.prepare(TargetDatabaseImpl.java:38)
... 123 more
Caused by: javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:jboss/datasources/ExampleDS
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:656)
at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:429)
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:747)
at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
... 127 more
Caused by: javax.resource.ResourceException: IJ000655: No managed connections available within configured blocking timeout (30000 [ms])
at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:564)
at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:626)
at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:598)
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:590)
... 130 more