IJ00085: IBM MQ XMS Client connecting to WAS SIBUS hangs intermittently

APAR status

• Closed as program error.

Error description

• XMS.NET Client application connecting to WAS SIBus hangs
  intermittently while creating a connection.Following exception
  is thrown after couple of hours
  
  22.08.2017 12:31:07 - ERROR - XMS-Fehler EC='CWSIA0241'
  IBM.XMS.XMSException - EXCEPTION_RECEIVED_CWSIA0241
  EXCEPTION_RECEIVED_CWSIA0241.explanation
  EXCEPTION_RECEIVED_CWSIA0241.useraction
     at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String
  userName,
       String password)
     at IBM.XMS.Impl.ConnectionFactory.CreateConnection()
     at IBM.Module.ISH.Interface.XmsClient.connect()
     at IBM.Module.ISH.Interface.XmsClient.read()
     at IBM.Module.ISH.Interface.IshXmsProxy.read(Param
  queueCorrelationInfo, Param queueInfo)
  22.08.2017 12:31:07 - ERROR - LinkedException (XMSException):
  IBM.XMS.Core.SIResourceException - CWSIT0006E: It is not
  possible to
  connect to bus ISH.MQClientLinkProxy.Bus because the following
  bootstrap
  servers could not be contacted
  192.168.170.18:7276:BootstrapBasicMessaging and the following
  bootstrap
  servers returned an error condition . See previous messages for
  the
  reason for each bootstrap server failure.
  The client cannot connect to the bus. This situation may be due
  to
  configuration problems, network problems or it may be that none
  of the
  required bootstrap servers or messaging engines are currently
  available.
  Ensure that the network is working correctly and that the
  required
  bootstrap servers and messaging engines are available.
     at
  IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credent
  ials
  credentials, SICoreConnectionProperties connectionProperties,
  ClientAttachProperties cap)
     at
  IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.CreateConnection(
  Credenti
  als credentials, SICoreConnectionProperties
  connectionProperties)
     at
  IBM.XMS.SIB.Trm.TrmSICoreConnectionFactory.CreateConnection(Stri
  ng
  username, String password, SICoreConnectionProperties
  connectionProperties)
     at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String
  userName,
  String password)
  IBM.XMS.Core.SIConnectionLostException - Exception of type
  'IBM.XMS.Core.SIConnectionLostException' was thrown.
     at
  IBM.XMS.SIB.Comms.Client.ClientSideConnection.Connect(Connection
  Properti
  es cp, IClientComponentHandshake cch, SICoreConnectionProperties
  siProps)
     at
  IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credent
  ials
  credentials, SICoreConnectionProperties connectionProperties,
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  XMS.NET Applications connecting to WAS SIBus
  
  
  Platforms affected:
  Windows
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When creating  a connection to WAS SIBus,XMS.NET application
  hangs intermittently.
  

Problem conclusion

• While creating a connection to WAS SIBus,XMS.NET assigns a
  conversationId to each connection and adds into the hashtable
  for future reference.While adding the conversationId into the
  hashtable,the threads have to be synchronized which wasn't the
  case,due to which there was an intermittent hang while creating
  a connection.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.9
  v9.0 LTS   9.0.0.4
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WMQ XMS V 8.0

• Fixed component ID

  5724H7257

Applicable component levels