Hi! I've installed jBPM 3.1B3 to see if it solves my problems with assignments 
with groups, i tried to migrate my processdefinitions but it didn't work. 
Anyway, i just deployed the processes included in the ZIP (the original ones) 
and everything goes fine, but when i stop JBoss appear a lot of messages 
informing i'm responsible for the save of data and persistence problems, does 
anybody know how to configure the system in order not to receive this errors? 
Thanks!

10:35:53,543 INFO  [SchedulerThread] runtime exception while executing timers
  | org.hibernate.exception.GenericJDBCException: Cannot open connection
  |         at 
org.hibernate.exception.SQLStateConverter.handledNonSpecificException
  | (SQLStateConverter.java:91)
  |         at 
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.j
  | ava:79)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:43)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:29)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:307)
  |         at 
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.
  | java:109)
  |         at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:134)
  |         at 
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:
  | 57)
  |         at 
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1236
  | )
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistence
  | Service.java:98)
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSchedulerSession(DbPe
  | rsistenceService.java:228)
  |         at org.jbpm.JbpmContext.getSchedulerSession(JbpmContext.java:419)
  |         at 
org.jbpm.scheduler.impl.SchedulerThread.executeTimers(SchedulerThread
  | .java:103)
  |         at 
org.jbpm.scheduler.impl.SchedulerThread.run(SchedulerThread.java:70)
  | Caused by: org.jboss.util.NestedSQLException: You are trying to use a 
connection
  |  factory that has been shut down: ManagedConnectionFactory is null.; - 
nested th
  | rowable: (javax.resource.ResourceException: You are trying to use a 
connection f
  | actory that has been shut down: ManagedConnectionFactory is null.)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:79)
  |         at 
org.hibernate.connection.DatasourceConnectionProvider.getConnection(D
  | atasourceConnectionProvider.java:69)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:304)
  |         ... 9 more
  | Caused by: javax.resource.ResourceException: You are trying to use a 
connection
  | factory that has been shut down: ManagedConnectionFactory is null.
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateC
  | onnection(BaseConnectionManager2.java:454)
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2$Connectio
  | nManagerProxy.allocateConnection(BaseConnectionManager2.java:894)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:73)
  |         ... 11 more
  | 10:35:53,694 DEBUG [CommandExecutorThread] command 'null' threw exception. 
rolli
  | ng back transaction
  | org.hibernate.exception.GenericJDBCException: Cannot open connection
  |         at 
org.hibernate.exception.SQLStateConverter.handledNonSpecificException
  | (SQLStateConverter.java:91)
  |         at 
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.j
  | ava:79)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:43)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:29)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:307)
  |         at 
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.
  | java:109)
  |         at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:134)
  |         at 
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:
  | 57)
  |         at 
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1236
  | )
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistence
  | Service.java:98)
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getMessagingSession(DbPe
  | rsistenceService.java:219)
  |         at org.jbpm.JbpmContext.getMessagingSession(JbpmContext.java:411)
  |         at org.jbpm.msg.db.DbMessageService.<init>(DbMessageService.java:49)
  |         at 
org.jbpm.msg.db.DbMessageServiceFactory.openService(DbMessageServiceF
  | actory.java:32)
  |         at org.jbpm.svc.Services.getService(Services.java:136)
  |         at org.jbpm.svc.Services.getMessageService(Services.java:172)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.executeCommand(CommandExec
  | utorThread.java:111)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.run(CommandExecutorThread.
  | java:79)
  | Caused by: org.jboss.util.NestedSQLException: You are trying to use a 
connection
  |  factory that has been shut down: ManagedConnectionFactory is null.; - 
nested th
  | rowable: (javax.resource.ResourceException: You are trying to use a 
connection f
  | actory that has been shut down: ManagedConnectionFactory is null.)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:79)
  |         at 
org.hibernate.connection.DatasourceConnectionProvider.getConnection(D
  | atasourceConnectionProvider.java:69)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:304)
  |         ... 13 more
  | Caused by: javax.resource.ResourceException: You are trying to use a 
connection
  | factory that has been shut down: ManagedConnectionFactory is null.
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateC
  | onnection(BaseConnectionManager2.java:454)
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2$Connectio
  | nManagerProxy.allocateConnection(BaseConnectionManager2.java:894)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:73)
  |         ... 15 more
  | 10:35:53,854 DEBUG [JbpmContext] closing JbpmContext
  | 10:35:53,854 DEBUG [Services] closing service 'persistence': 
org.jbpm.persistenc
  | [EMAIL PROTECTED]
  | 10:35:53,864 INFO  [STDOUT] org.jbpm.JbpmException: User provided session 
was co
  | mbined with setRollbackOnly.  With user provided hibernate sessions, the 
user is
  |  responsible for managing transactions
  | 10:35:53,864 INFO  [STDOUT]     at 
org.jbpm.persistence.db.DbPersistenceService.
  | close(DbPersistenceService.java:128)
  | 10:35:53,874 INFO  [STDOUT]     at 
org.jbpm.svc.Services.close(Services.java:211
  | )
  | 10:35:53,884 INFO  [STDOUT]     at 
org.jbpm.JbpmContext.close(JbpmContext.java:1
  | 38)
  | 10:35:53,884 INFO  [STDOUT]     at 
org.jbpm.msg.command.CommandExecutorThread.ex
  | ecuteCommand(CommandExecutorThread.java:138)
  | 10:35:53,894 INFO  [STDOUT]     at 
org.jbpm.msg.command.CommandExecutorThread.ru
  | n(CommandExecutorThread.java:79)
  | 10:35:53,894 ERROR [Services] problem closing service 'persistence'
  | org.jbpm.JbpmException: User provided session was combined with 
setRollbackOnly.
  |   With user provided hibernate sessions, the user is responsible for 
managing tr
  | ansactions
  |         at 
org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceServi
  | ce.java:128)
  |         at org.jbpm.svc.Services.close(Services.java:211)
  |         at org.jbpm.JbpmContext.close(JbpmContext.java:138)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.executeCommand(CommandExec
  | utorThread.java:138)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.run(CommandExecutorThread.
  | java:79)
  | 10:36:33,260 INFO  [SchedulerThread] runtime exception while executing 
timers
  | org.hibernate.exception.GenericJDBCException: Cannot open connection
  |         at 
org.hibernate.exception.SQLStateConverter.handledNonSpecificException
  | (SQLStateConverter.java:91)
  |         at 
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.j
  | ava:79)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:43)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:29)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:307)
  |         at 
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.
  | java:109)
  |         at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:134)
  |         at 
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:
  | 57)
  |         at 
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1236
  | )
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistence
  | Service.java:98)
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSchedulerSession(DbPe
  | rsistenceService.java:228)
  |         at org.jbpm.JbpmContext.getSchedulerSession(JbpmContext.java:419)
  |         at 
org.jbpm.scheduler.impl.SchedulerThread.executeTimers(SchedulerThread
  | .java:103)
  |         at 
org.jbpm.scheduler.impl.SchedulerThread.run(SchedulerThread.java:70)
  | Caused by: org.jboss.util.NestedSQLException: You are trying to use a 
connection
  |  factory that has been shut down: ManagedConnectionFactory is null.; - 
nested th
  | rowable: (javax.resource.ResourceException: You are trying to use a 
connection f
  | actory that has been shut down: ManagedConnectionFactory is null.)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:79)
  |         at 
org.hibernate.connection.DatasourceConnectionProvider.getConnection(D
  | atasourceConnectionProvider.java:69)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:304)
  |         ... 9 more
  | Caused by: javax.resource.ResourceException: You are trying to use a 
connection
  | factory that has been shut down: ManagedConnectionFactory is null.
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateC
  | onnection(BaseConnectionManager2.java:454)
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2$Connectio
  | nManagerProxy.allocateConnection(BaseConnectionManager2.java:894)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:73)
  |         ... 11 more
  | 10:37:06,188 DEBUG [DbPersistenceServiceFactory] creating persistence 
service
  | 10:37:06,188 DEBUG [DbPersistenceService] creating hibernate session
  | 10:37:06,198 DEBUG [DbPersistenceService] beginning hibernate transaction
  | 10:37:06,198 WARN  [JDBCExceptionReporter] SQL Error: 0, SQLState: null
  | 10:37:06,198 ERROR [JDBCExceptionReporter] You are trying to use a 
connection fa
  | ctory that has been shut down: ManagedConnectionFactory is null.; - nested 
throw
  | able: (javax.resource.ResourceException: You are trying to use a connection 
fact
  | ory that has been shut down: ManagedConnectionFactory is null.)
  | 10:37:06,208 DEBUG [CommandExecutorThread] command 'null' threw exception. 
rolli
  | ng back transaction
  | org.hibernate.exception.GenericJDBCException: Cannot open connection
  |         at 
org.hibernate.exception.SQLStateConverter.handledNonSpecificException
  | (SQLStateConverter.java:91)
  |         at 
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.j
  | ava:79)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:43)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
  | er.java:29)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:307)
  |         at 
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.
  | java:109)
  |         at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:134)
  |         at 
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:
  | 57)
  |         at 
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1236
  | )
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistence
  | Service.java:98)
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getMessagingSession(DbPe
  | rsistenceService.java:219)
  |         at org.jbpm.JbpmContext.getMessagingSession(JbpmContext.java:411)
  |         at org.jbpm.msg.db.DbMessageService.<init>(DbMessageService.java:49)
  |         at 
org.jbpm.msg.db.DbMessageServiceFactory.openService(DbMessageServiceF
  | actory.java:32)
  |         at org.jbpm.svc.Services.getService(Services.java:136)
  |         at org.jbpm.svc.Services.getMessageService(Services.java:172)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.executeCommand(CommandExec
  | utorThread.java:111)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.run(CommandExecutorThread.
  | java:79)
  | Caused by: org.jboss.util.NestedSQLException: You are trying to use a 
connection
  |  factory that has been shut down: ManagedConnectionFactory is null.; - 
nested th
  | rowable: (javax.resource.ResourceException: You are trying to use a 
connection f
  | actory that has been shut down: ManagedConnectionFactory is null.)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:79)
  |         at 
org.hibernate.connection.DatasourceConnectionProvider.getConnection(D
  | atasourceConnectionProvider.java:69)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager
  | .java:304)
  |         ... 13 more
  | Caused by: javax.resource.ResourceException: You are trying to use a 
connection
  | factory that has been shut down: ManagedConnectionFactory is null.
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateC
  | onnection(BaseConnectionManager2.java:454)
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2$Connectio
  | nManagerProxy.allocateConnection(BaseConnectionManager2.java:894)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrapp
  | erDataSource.java:73)
  |         ... 15 more
  | 10:37:06,368 DEBUG [JbpmContext] closing JbpmContext
  | 10:37:06,368 DEBUG [Services] closing service 'persistence': 
org.jbpm.persistenc
  | [EMAIL PROTECTED]
  | 10:37:06,378 INFO  [STDOUT] org.jbpm.JbpmException: User provided session 
was co
  | mbined with setRollbackOnly.  With user provided hibernate sessions, the 
user is
  |  responsible for managing transactions
  | 10:37:06,388 INFO  [STDOUT]     at 
org.jbpm.persistence.db.DbPersistenceService.
  | close(DbPersistenceService.java:128)
  | 10:37:06,388 INFO  [STDOUT]     at 
org.jbpm.svc.Services.close(Services.java:211
  | )
  | 10:37:20,328 INFO  [Http11Protocol] Pausing Coyote HTTP/1.1 on 
http-0.0.0.0-808
  | 
  | 10:37:25,145 DEBUG [JbpmContextInfo] creating jbpm context with service 
factori
  | s '[message, scheduler, logging, persistence, authentication]'
  | 10:37:30,913 DEBUG [JbpmContext] creating JbpmContext
  | 10:37:30,913 DEBUG [DbPersistenceServiceFactory] creating persistence 
service
  | 10:37:30,913 DEBUG [DbPersistenceService] creating hibernate session
  | 10:37:30,913 DEBUG [DbPersistenceService] beginning hibernate transaction
  | 10:37:30,923 WARN  [JDBCExceptionReporter] SQL Error: 0, SQLState: null
  | 10:37:30,923 ERROR [JDBCExceptionReporter] You are trying to use a 
connection f
  | ctory that has been shut down: ManagedConnectionFactory is null.; - nested 
thro
  | able: (javax.resource.ResourceException: You are trying to use a connection 
fac
  | ory that has been shut down: ManagedConnectionFactory is null.)
  | 10:37:30,933 DEBUG [CommandExecutorThread] command 'null' threw exception. 
roll
  | ng back transaction
  | org.hibernate.exception.GenericJDBCException: Cannot open connection
  |         at 
org.hibernate.exception.SQLStateConverter.handledNonSpecificExceptio
  | (SQLStateConverter.java:91)
  |         at 
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.
  | ava:79)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHel
  | er.java:43)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHel
  | er.java:29)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManage
  | .java:307)
  |         at 
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager
  | java:109)
  |         at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:134)
  |         at 
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java
  | 57)
  |         at 
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:123
  | )
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistenc
  | Service.java:98)
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getMessagingSession(DbP
  | rsistenceService.java:219)
  |         at org.jbpm.JbpmContext.getMessagingSession(JbpmContext.java:411)
  |         at org.jbpm.msg.db.DbMessageService.<init>(DbMessageService.java:49)
  |         at 
org.jbpm.msg.db.DbMessageServiceFactory.openService(DbMessageService
  | actory.java:32)
  |         at org.jbpm.svc.Services.getService(Services.java:136)
  |         at org.jbpm.svc.Services.getMessageService(Services.java:172)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.executeCommand(CommandExe
  | utorThread.java:111)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.run(CommandExecutorThread
  | java:79)
  | Caused by: org.jboss.util.NestedSQLException: You are trying to use a 
connectio
  |  factory that has been shut down: ManagedConnectionFactory is null.; - 
nested t
  | rowable: (javax.resource.ResourceException: You are trying to use a 
connection
  | actory that has been shut down: ManagedConnectionFactory is null.)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrap
  | erDataSource.java:79)
  |         at 
org.hibernate.connection.DatasourceConnectionProvider.getConnection(
  | atasourceConnectionProvider.java:69)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManage
  | .java:304)
  |         ... 13 more
  | Caused by: javax.resource.ResourceException: You are trying to use a 
connection
  | factory that has been shut down: ManagedConnectionFactory is null.
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocate
  | onnection(BaseConnectionManager2.java:454)
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2$Connecti
  | nManagerProxy.allocateConnection(BaseConnectionManager2.java:894)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrap
  | erDataSource.java:73)
  |         ... 15 more
  | 10:37:31,094 DEBUG [JbpmContext] closing JbpmContext
  | 10:37:31,094 DEBUG [Services] closing service 'persistence': 
org.jbpm.persisten
  | [EMAIL PROTECTED]
  | 10:37:31,104 INFO  [STDOUT] org.jbpm.JbpmException: User provided session 
was c
  | mbined with setRollbackOnly.  With user provided hibernate sessions, the 
user i
  |  responsible for managing transactions
  | 10:37:31,114 INFO  [STDOUT]     at 
org.jbpm.persistence.db.DbPersistenceService
  | close(DbPersistenceService.java:128)
  | 10:37:31,124 INFO  [STDOUT]     at 
org.jbpm.svc.Services.close(Services.java:21
  | )
  | 10:37:31,124 INFO  [STDOUT]     at 
org.jbpm.JbpmContext.close(JbpmContext.java:
  | 38)
  | 10:37:31,134 INFO  [STDOUT]     at 
org.jbpm.msg.command.CommandExecutorThread.e
  | ecuteCommand(CommandExecutorThread.java:138)
  | 10:37:31,134 INFO  [STDOUT]     at 
org.jbpm.msg.command.CommandExecutorThread.r
  | n(CommandExecutorThread.java:79)
  | 10:37:31,144 ERROR [Services] problem closing service 'persistence'
  | org.jbpm.JbpmException: User provided session was combined with 
setRollbackOnly
  |   With user provided hibernate sessions, the user is responsible for 
managing t
  | ansactions
  |         at 
org.jbpm.persistence.db.DbPersistenceService.close(DbPersistenceServ
  | ce.java:128)
  |         at org.jbpm.svc.Services.close(Services.java:211)
  |         at org.jbpm.JbpmContext.close(JbpmContext.java:138)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.executeCommand(CommandExe
  | utorThread.java:138)
  |         at 
org.jbpm.msg.command.CommandExecutorThread.run(CommandExecutorThread
  | java:79)
  | 10:37:31,174 DEBUG [JbpmContextInfo] creating jbpm context with service 
factori
  | s '[message, scheduler, logging, persistence, authentication]'
  | 10:37:31,184 DEBUG [JbpmContext] creating JbpmContext
  | 10:37:31,194 DEBUG [DbPersistenceServiceFactory] creating persistence 
service
  | 10:37:31,194 DEBUG [DbPersistenceService] creating hibernate session
  | 10:37:31,194 DEBUG [DbPersistenceService] beginning hibernate transaction
  | 10:37:31,204 WARN  [JDBCExceptionReporter] SQL Error: 0, SQLState: null
  | 10:37:31,204 ERROR [JDBCExceptionReporter] You are trying to use a 
connection f
  | ctory that has been shut down: ManagedConnectionFactory is null.; - nested 
thro
  | able: (javax.resource.ResourceException: You are trying to use a connection 
fac
  | ory that has been shut down: ManagedConnectionFactory is null.)
  | 10:37:31,214 DEBUG [JbpmContext] closing JbpmContext
  | 10:37:31,214 DEBUG [Services] closing service 'persistence': 
org.jbpm.persisten
  | [EMAIL PROTECTED]
  | 10:37:31,224 DEBUG [DbPersistenceService] flushing hibernate session
  | 10:37:31,224 DEBUG [DbPersistenceService] closing hibernate session
  | 10:37:31,234 INFO  [SchedulerThread] runtime exception while executing 
timers
  | org.hibernate.exception.GenericJDBCException: Cannot open connection
  |         at 
org.hibernate.exception.SQLStateConverter.handledNonSpecificExceptio
  | (SQLStateConverter.java:91)
  |         at 
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.
  | ava:79)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHel
  | er.java:43)
  |         at 
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHel
  | er.java:29)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManage
  | .java:307)
  |         at 
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager
  | java:109)
  |         at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:134)
  |         at 
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java
  | 57)
  |         at 
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:123
  | )
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistenc
  | Service.java:98)
  |         at 
org.jbpm.persistence.db.DbPersistenceService.getSchedulerSession(DbP
  | rsistenceService.java:228)
  |         at org.jbpm.JbpmContext.getSchedulerSession(JbpmContext.java:419)
  |         at 
org.jbpm.scheduler.impl.SchedulerThread.executeTimers(SchedulerThrea
  | .java:103)
  |         at 
org.jbpm.scheduler.impl.SchedulerThread.run(SchedulerThread.java:70)
  | Caused by: org.jboss.util.NestedSQLException: You are trying to use a 
connectio
  |  factory that has been shut down: ManagedConnectionFactory is null.; - 
nested t
  | rowable: (javax.resource.ResourceException: You are trying to use a 
connection
  | actory that has been shut down: ManagedConnectionFactory is null.)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrap
  | erDataSource.java:79)
  |         at 
org.hibernate.connection.DatasourceConnectionProvider.getConnection(
  | atasourceConnectionProvider.java:69)
  |         at 
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManage
  | .java:304)
  |         ... 9 more
  | Caused by: javax.resource.ResourceException: You are trying to use a 
connection
  | factory that has been shut down: ManagedConnectionFactory is null.
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2.allocate
  | onnection(BaseConnectionManager2.java:454)
  |         at 
org.jboss.resource.connectionmanager.BaseConnectionManager2$Connecti
  | nManagerProxy.allocateConnection(BaseConnectionManager2.java:894)
  |         at 
org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(Wrap
  | erDataSource.java:73)
  |         ... 11 more
  | 10:37:31,364 ERROR [CommandExecutorThread] org.jbpm.JbpmException: problem 
clos
  | ng services {persistence=org.jbpm.JbpmException: User provided session was 
comb
  | ned with setRollbackOnly.  With user provided hibernate sessions, the user 
is r
  | sponsible for managing transactions}... and more... 

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