PH65835: AFTER MIGRATION TO MQ 9.4 CSQ4BCX3 RETURNS UNEXPECTED MQRC FOR MQCONN CALL

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• User reports that exit CSQ4BCX3 is returned a non-zero MQRC whe
  executing with MQ 9.4 but runs successfully at MQ 9.3. In the
  reported case MQCONN is returned an MQRC 2059.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 4 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: MQCONN fails with MQCC_FAILED,          *
  *                      MQRC_Q_MGR_NOT_AVAILABLE when called    *
  *                      from a channel exit, if a blank/null    *
  *                      queue manager name is provided.         *
  ****************************************************************
  When MQCONN is called with a blank/null queue manager name from
  a channel exit, the call should succeed and return the
  connection handle for the channel's connection to the queue
  manager. After migrating to MQ V9.4, this no longer happens, and
  the call fails with MQRC_Q_MGR_NOT_AVAILABLE instead.
  

Problem conclusion

• When MQCONN is called with a blank/null queue manager name from
  a channel exit, the call will now succeed and return the
  connection handle as expected.
  

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:

  UO03116

Modules/Macros

• CSQXADPM
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R400 PSY UO03116

     UP25/06/11 P F506

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.