PH39766: ENHANCEMENTS TO SUPPORT PASSING XID TO DB2, NEEDS A LARGE ENOUGHAREA OF STORAGE TO ACCOMMODATE THE XID BEING PASSED BACK BY RRS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Support for passing XID to Db2 added at CICS TS 5.5 is not
  working as expected.
  

Local fix

• no local fix
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: CICS-Db2 attach will query MVS RRS to   *
  *                      obtain an XID, The CICS-Db2 attach      *
  *                      provides an area of storage too small   *
  *                      to contain the provided XID.            *
  ****************************************************************
  CICS-Db2 Attach will query MVS RRS to see if a unit of work was
  initiated from outside CICS and is being coordinated by MVS RRS.
  It will pass in the lu6.2 uowid as a filter and RRS will return
  the associated unit of recovery if there is one. If an RRS unit
  of recovery is returned, then CICS will obtain the XID
  associated with the RRS Unit of Recovery.
  The storage area provided by the CICS-Db2 attach to accommodate
  the XID is too small and the CICS-Db2 attach will generate a
  CICS originated XID.
  If IMS is also in the application environment it will include a
  BQUAL in its generated XID.
  The ATRQUERY issued by CICS was sent to all systems in the
  sysplex regardless of their RRS logging group.
  

Problem conclusion

• The CICS-Db2 attach has been changed to provide a local storage
  area large enough to accommodate the RRS generated XID.
  The ATRQUERY issued by CICS has been amended to remove the GNAME
  parameter so that it defaults to querying systems with the same
  RRS logging group as the current system.
  

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:

  PH47972 PH47996 UI81504 UI81505

Modules/Macros

• DFHD2CC  DFHD2CO  DFHD2D2  DFHD2DUF DFHD2EDF DFHD2EX1 DFHD2EX2
  DFHD2EX3 DFHD2MSB DFHD2STP DFHD2STR DFHD2TM
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R200 PSY UI81505

     UP22/07/16 P F207

• R300 PSY UI81504

     UP22/07/20 P F207

Fix is available

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