PM39086: ORF VARIOUS PROBLEMS RELATED TO EXCESSIVE XCF TRAFFIC

APAR status

• Closed as program error.

Error description

• An ORF job communicates with the IMS Control Region via XCF.
  For a heavily used system, XCF traffic can become excessive and
  result in the following problems:
  - HRF01521W  Error from IMP2: FUNC=IXCMSGO RC=0000000C
    RSN=00000004
    HRF01000E  Too much traffic in XCF
    HRF01000E  Capture function shutting down
  - HRF01517E  Error encountered during Change capture for DBD
    FUNC=Unknown RC=00000004 RSN=00000127
  - Timeouts waiting for XCF messages
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of IMS Online Reorg Facility V1.2      *
  ****************************************************************
  * PROBLEM DESCRIPTION: Various problems related to excessive   *
  *                      XCF traffic.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  This APAR is correcting the following:
  1. XCF traffic related problems.
  Explanation:  When ORF captures changes, it does so by DBD
  reference. However, some log records do not have the DBD
  reference, but neeed to be shipped. These records may then
  be ignored in the ORF job.
  2. NOREORGI was done using the temporary RECON
  Explanation:  The database is HALDB, so a temporary RECON is
  used to allocate the shadow datasets. The apply phase failed
  and triggered recovery. Recovery did not swap back to the
  original RECON, so the NOREORGI was done against the wrong
  RECON, leaving the flag on in the original RECON.
  

Problem conclusion

• The following changes have been made for the above problems:
  1. A filter has been inserted to check if any changes have been
  made for that PST.  If no changes had been made, those "not
  identifiable" records are no longer shipped to the ORF job.
  2. The recovery process has been changed to swap back to the
  original RECON if the temporary RECON was active.
  3. After applying this fix, The IMS CTL region must be recycled.
  

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:

  UK67973

Modules/Macros

• HRFDBUX1 HRFODBRN HRFOFLGX HRFOLEV0 HRFOREOD
  HRFRRC10 HRFRRC11 HRFRRC12 HRFRRC91 HRFYOF10 HRFYOF11 HRFYOF12
  HRFYOF91
  

Fix information

• Fixed component name

  IMS ONLINE REOR

• Fixed component ID

  5655H9700

Applicable component levels

• R120 PSY UK67973

     UP11/05/24 P F105