IT44403: MQ 9.3.x .Net core application encounters error MQRC 2219 when using security exits

APAR status

• Closed as program error.

Error description

• When using MQ 9.3.x .Net core application which implements
  security exits, the application receives MQRC
  2219(MQRC_CALL_IN_PROGRESS) when connecting to the queue
  manager. The error is thrown during the second connection call.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users who are using security exits with MQ .Net core application
  with two or more connection calls.
  
  
  Platforms affected:
  Linux on x86-64, Windows
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  MQ .Net core sets data on call context when calling security
  exits and unset it when security exits return to MQ. There was a
  coding error when data on call context is unset which caused the
  mqrc 2219 when a second connection call was made by the
  application.
  

Problem conclusion

• The code has been corrected to ensure unset of the data on call
  context is done appropriately.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.3 LTS   9.3.0.20
  v9.4 LTS   9.4.0.5
  v9.x CD    9.4.1
  
  The latest available maintenance can be obtained from
  'IBM MQ Recommended Fixes'
  https://www.ibm.com/support/pages/recommended-fixes-ibm-mq
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'IBM MQ
  Planned Maintenance Release Dates'
  https://ibm.biz/mqplannedmaintenance
  
  ---------------------------------------------------------------
  

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

  MQ BASE V9.3

• Fixed component ID

  5724H7291

Applicable component levels