OA41676: TAILORED DICTIONARY INCORRECTLY WRITTEN TO DATA SET OPEN WHEN DATA SET IS OPEN FOR INOUT WITHOUT ISSUING A READ BEFORE WRITES

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• This APAR applies only to SAM EF tailored compressed datasets.
  
  OA26025 describes the following:
  
  "After applying this fix, an abend002-E1 will occur if a
  program attempts to issue a WRITE to a SAM EF tailored
  compression data set that has been opened INOUT and the
  WRITE did not have a preceding READ."
  
  The maintenance was specific to new datasets that has not built
  the tailored dictionary yet.
  
  This new APAR will address the path when the dataset had been
  written to correctly once.  Then later the dataset is opened and
  closed without performing any IO activity.  This activity will
  place an EOF in the dataset that has an existing dictionary.
  In that state, an ABEND002-E1 will not occur even with OA26025
  applied because the dictionary exists.
  
  1) A new abend 002-xx will be added to prevent WRITEs without a
  proeceding READ for datasets opened with INOUT.
  
  OR
  
  2) A change will be made to allow this to work ONLY when a
  dictionary already exists.
  

Local fix

• Allocate dataset as Generic Compressed instead of tailored.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of SAM compressed data sets that open  *
  *                 for INOUT and write without reading.         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Users of SAM compressed data sets that  *
  *                      open for INOUT and write without        *
  *                      reading may experience unpredictable    *
  *                      results.                                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Users of SAM compressed data sets that open for INOUT and write
  without reading may experience unproductable results.
  

Problem conclusion

• Support open for INOUT and write without reading.  This does not
  keep an S002-E1 abend from occuring if a tailored dictionary
  needs to be written.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UA69288 UA69289 UA69290

Modules/Macros

• IGG019VX
  

Fix information

• Fixed component name

  BASE ACCESS MET

• Fixed component ID

  5695DF102

Applicable component levels

• RC10 PSY UA69288

     UP13/06/27 P F306

• RD10 PSY UA69289

     UP13/06/27 P F306

• R210 PSY UA69290

     UP13/06/27 P F306

Fix is available

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