PK64576: IEC161I 052(011,..)-84 RETURNED WHEN USING VSAM STRIPING FOR ACTIVE LOGS WHEN IT IS NON-DATA SHARING.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The following messages are returned when using VSAM striping
  for active logs in the non-data sharing DB2 subsystem:
  (It can also occur on a non striped active log.)
  IEC161I 052(011,DFN2MSTR)-084,IE417FN2,LOGMAS3,SYS00030,,,  995
  IEC161I DF2N.DFN2.LOGCOPY1.DS31,DF2N.DFN2.LOGCOPY1.DS31.DATA,
  IEC161I CATALOG.DF2N.SGQDY5Q
  The same messages were not issued in a data sharing environment.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All non-data sharing users of DB2.           *
  ****************************************************************
  * PROBLEM DESCRIPTION: MSGIEC161I RC052 received from a        *
  *                      third-party vendor product attempting   *
  *                      to read an active log data set from     *
  *                      a DB2 subsystem running in non-data     *
  *                      sharing mode.                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When DB2 is running in non-data sharing mode, the active log
  data sets are allocated with DISP=OLD.  This can prevent
  another product from reading the active log data sets
  while DB2 is up, even if the VSAM SHROPTIONS are defined to
  allow multiple readers.  In data-sharing mode, DB2 will
  allocate the active logs with DISP=SHR so that peer members
  in the data sharing group can access the log data sets while
  DB2 is up.  The vendor has requested that DB2 allocate the
  logs with DISP=SHR in non-data sharing mode, to be consistent
  with data sharing mode.
  

Problem conclusion

• Although it is not recommended that an application attempts to
  read the active log data sets while DB2 is up, DB2 has agreed
  to allocate the active logs with DISP=SHR in non-data sharing
  mode to be consistent with data sharing mode.  Unpredictable
  results can occur when reading the current active log data
  sets.  The preferred method is to use the IFI READS facility for
  IFCID 306 to read log records from the active log data sets
  when DB2 is active.
  

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:

  UK37178 UK37179

Modules/Macros

• DSNJDS01
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• R810 PSY UK37178

     UP08/06/24 P F806

• R910 PSY UK37179

     UP08/06/24 P F806

Fix is available

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