XA making multiple connections with MQ manager about btm HOT 3 CLOSED

Can anyone please help above.

from btm.

@ramit21 which WMQ (or rebranded as IBM MQ...) version are you using on client and server side? We tried using [v9 client + v6 server] and saw multiple connection attempts within a single XAQueueConnectionFactory#createXAConnection().

IBM KC suggests using "migration mode" (ref. link), but doesn't seem help us out yet....

Also asked in https://stackoverflow.com/questions/52655619/wmq-connection-socket-constantly-closed-between-v9-client-and-v6-server?noredirect=1#comment92601694_52655619, in case it's helpful to someone.

from btm.

Hi @fall14123 , we are using version 8 of MQ. Tried playing around with providerVersion as suggested by you, but no luck. In fact giving provierVersion as 6 only made things worse and more connections leaked. One difference between your code (as on stackoverflow link) and ours is that we are using Bitronix PoolingConnectionFactory for JMS and PoolingDataSource for DB connections. Another observation is that connections leak when we either produce or consume messages concurrently (a burst of messages). For some reason, PoolingConnectionFactory is not honouring the poolsize that we have given as 20.

PoolingConnectionFactory connectionFactory = new PoolingConnectionFactory();
connectionFactory.setClassName("com.ibm.mq.jms.MQXAQueueConnectionFactory");
connectionFactory.setUniqueName(XA_FACTORY_NAME);
connectionFactory.setAllowLocalTransactions(false);
connectionFactory.setTestConnections(true);
connectionFactory.setUser(user);
connectionFactory.setPassword(password);
connectionFactory.setMaxPoolSize(20);
Properties driverProperties = connectionFactory.getDriverProperties();
driverProperties.setProperty("port", ...);
driverProperties.setProperty("transportType", ...);
driverProperties.setProperty("channel", ...);
driverProperties.setProperty("hostName", ...);
driverProperties.setProperty("queueManager", ...);

All at sea with this connection leak issue. Rasied it with more details on StackOverflow as well - https://stackoverflow.com/questions/53334069/bitronix-poolingconnectionfactory-making-multiple-connections-that-wont-close

from btm.