in JBOSS 6.1.0 Final, I got the following exception after the application run some time. what's the reason and impact of this exception? 

2015-07-09 21:16:47,403 INFO [com.arjuna.ats.arjuna] (Transaction Expired Entry Monitor) ARJUNA-12296 ExpiredEntryMonitor running at Thu, 9 Jul 2015 21:16:47

2015-07-10 09:16:47,406 INFO [com.arjuna.ats.arjuna] (Transaction Expired Entry Monitor) ARJUNA-12296 ExpiredEntryMonitor running at Fri, 10 Jul 2015 09:16:47

2015-07-10 21:16:47,410 INFO [com.arjuna.ats.arjuna] (Transaction Expired Entry Monitor) ARJUNA-12296 ExpiredEntryMonitor running at Fri, 10 Jul 2015 21:16:47

2015-07-11 09:16:47,414 INFO [com.arjuna.ats.arjuna] (Transaction Expired Entry Monitor) ARJUNA-12296 ExpiredEntryMonitor running at Sat, 11 Jul 2015 09:16:47

2015-07-11 21:20:47,069 INFO [com.arjuna.ats.arjuna] (Transaction Expired Entry Monitor) ARJUNA-12296 ExpiredEntryMonitor running at Sat, 11 Jul 2015 21:18:59

2015-07-11 21:49:41,267 INFO  [com.arjuna.ats.arjuna] (Transaction Expired Entry Monitor) ARJUNA-12332 Failed to establish connection to server

2015-07-11 22:05:38,345 INFO [com.arjuna.ats.arjuna] (Transaction Expired Entry Monitor) ARJUNA-12304 Removing old transaction status manager item 0:ffffc014cbe3:1396:558c6fc0:9

2015-07-11 22:21:33,157 WARN [com.arjuna.ats.arjuna] (Server.Connection:192.20.203.227:62230) ARJUNA-12152 Connection Lost to Recovery Manager

After this exception, it's about 15 mins. the application got out of memory.

Thanks,

Eric.