IT38999: ABENDS MAY OCCUR DURING A HOTSWAP DEPLOY OF DOTNET CODE

APAR status

• Closed as program error.

Error description

• .NET code running inside an integration server can be
  dynamically updated by replacing the DLL assemblies on disk.
  This process is called a "hot swap deploy" and is enabled by
  default. An abend may occur when performing a hot swap deploy if
  the .NET code being redeployed is accessed from a message flow,
  e.g. in a .NET compute node or in an ESQL procedure call. This
  is due to improper locking of message flows during the hot swap.
  
  
  It is strongly recommended to disable hotswapping in production
  environments.
  

Local fix

• Use an DotNetAppDomain configurable service or policy to disable
  hot swapping via the AllowHotSwapDeploy attribute.
  Alternatively, stop all message flows conusming the .NET
  assemblies before performing the hotswap.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of .NET HotSwap deploys in IBM Integration Bus v10,
  IBM App Connect Enterprise v11, or v12.
  
  
  Platforms affected:
  Windows on x86-64 platform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  .NET code running inside an integration server can be
  dynamically updated by replacing the DLL assemblies on disk.
  This process is called a "hot swap deploy" and is enabled by
  default. An abend may occur when performing a hot swap deploy if
  the .NET code being redeployed is accessed from a message flow,
  e.g. in a .NET compute node or in an ESQL procedure call. This
  is due to improper locking of message flows during the hot swap.
  
  It is strongly recommended to disable hotswapping in production
  environments.
  

Problem conclusion

• All message flows will now be locked and stop processing
  messages during a hotswap deploy. Message processing will resume
  once the hotswap has been completed.
  
  Hotswapping should not be left enabled in a production
  environment.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.0      10.0.0.26
  v11.0      11.0.0.17
  v12.0      12.0.4.0
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

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

  INTEGRATION BUS

• Fixed component ID

  5724J0540

Applicable component levels