当我的应用程序服务器正在运行时，Jboss无法连接到DB。我正在运行docker DB2映像并且未使用本地DB。我在Virtual Box上运行Docker。应用程序正在打开VirtualBox IP（而不是localhost）的套接字。错误提示：
错误说：
Cannot create PoolableConnectionFactory : Exception java.net.ConnectException: Error opening socket to server /192.168.56.1 on port 50,000 with message: Connection refused: connect. ERRORCODE=-4499, SQLSTATE=08001 .......其中192.168.56.1是我的虚拟盒子IP。我可以通过本地运行的DB2客户端连接我的DB2 docker映像，但不能与我的应用程序连接。
日志：
2019-02-11 18:20:16,806 INFO [ost-startStop-1 ation.ConfigurationClassParser] - Properties location [/opt/demandtec/common/conf/jms.properties] not resolvable: class path resource [opt/demandtec/common/conf/jms.properties] cannot be opened because it does not exist
2019-02-11 18:20:17,877 INFO [ost-startStop-1 redAnnotationBeanPostProcessor] - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2019-02-11 18:20:18,683 INFO [ost-startStop-1 dtec.message.DestReserverBeans] - Loading defalt queue topic definitions
2019-02-11 18:20:18,736 INFO [ost-startStop-1 mandtec.global.DTServiceConfig] - init jndi template
2019-02-11 18:20:18,764 INFO [ost-startStop-1 dtec.global.DTRemotingServices] - Start Locate Registry with port: 3099
2019-02-11 18:20:22,685 INFO [ost-startStop-1 ssage.activemq.DTAMQJmsService] - amq connect meta data created
2019-02-11 18:20:22,691 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: QueueConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,697 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: TopicConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,698 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: PromoCPQueueConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,698 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: PerishableQueueConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,698 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: AMEQueueConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,698 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: FarmQueueConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,720 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: IAMTopicConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,720 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: CTSQueueConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,721 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: GlobalQueueConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,722 INFO [ost-startStop-1 .message.InitConnectionFactory] - export: GlobalTopicConnectionFactory as interface com.ibm.demandtec.mq.RemoteConnectFactory
2019-02-11 18:20:22,731 INFO [ost-startStop-1 ndtec.mq.DTMQConnectionFactory] - Init class: org.apache.activemq.ActiveMQConnectionFactory, with: {brokerURL=tcp://IBM217-PC0BY3X9:61616, trustAllPackages=true}
2019-02-11 18:20:22,992 INFO [ost-startStop-1 ndtec.mq.DTMQConnectionFactory] - Init class: org.apache.activemq.ActiveMQConnectionFactory, with: {brokerURL=tcp://IBM217-PC0BY3X9:61616, clientID=IBM217-PC0BY3X9.IAM, trustAllPackages=true}
2019-02-11 18:20:23,357 WARN [ost-startStop-1 .commons.dbcp2.BasicDataSource] - The requested JMX name [demandtec.com_optimization] was not valid and will be ignored.
2019-02-11 18:20:53,117 INFO [pool-2-thread-1 .demandtec.global.DTMDBService] - Startup AdminMDB
2019-02-11 18:20:54,241 INFO [pool-2-thread-1 .demandtec.global.DTMDBService] - Startup IAM as clientid:IBM217-PC0BY3X9_appiam
2019-02-11 18:30:31,001 WARN [ost-startStop-1 emandtec.dal.ConnectionHandler] - JBossPoolException! Failed getting connection to Optimization for demandtec.com
2019-02-11 18:30:31,001 WARN [ost-startStop-1 emandtec.dal.ConnectionHandler] - cause: Cannot create PoolableConnectionFactory ([jcc][t4][2043][11550][4.22.29] Exception java.net.ConnectException: Error opening socket to server /192.168.56.1 on port 50,000 with message: Connection refused: connect. ERRORCODE=-4499, SQLSTATE=08001)
2019-02-11 18:30:31,001 WARN [ost-startStop-1 emandtec.dal.ConnectionHandler] - will attempt one more time.
2019-02-11 18:30:31,001 WARN [ost-startStop-1 .commons.dbcp2.BasicDataSource] - The requested JMX name [demandtec.com_optimization] was not valid and will be ignored.
数据库：DB2；操作系统：在Oracle VirtualBox上运行的Windows7 / Docker；框架：J2EE；应用服务器：Jboss