OA68580: MSGIEC161I 253(8,93837601)-053 DURING AN OPEN OF A NON-RLS VSAM GENERIC COMPRESSED DATASET. THE REASON CODE IS INVALID.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• MSGIEC161I 253(8,93837601)-053 DURING AN OPEN OF A NON-RLS VSAM
  GENERIC COMPRESSED DATASET. THE REASON CODE IS INVALID.
  
  The SFI field in IEC161I message contains the Compression
  Services Return Code and Reason Code. The Reason Code is a
  4-byte value that VSAM was converting to decimal. The
  hexadecimal reason code returned from compression services was
  5F000821. When converted to decimal, this value is 1593837601.
  This is a 5-byte field, resulting in the high order byte being
  dropped.
  

Local fix

• For a reason code 5F000821, look for CMP003E to determine why
  compression services did not start. When the issue has been
  corrected, IPL will be required to pull in compression services.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All VSAM users using data compression.       *
  ****************************************************************
  * PROBLEM DESCRIPTION: The IEC161I 253 message incorrectly     *
  *                      displays the CMS compression            *
  *                      return and reason codes as decimal      *
  *                      values during a CMS Open failure.       *
  *                      CMS provides two 4-byte values          *
  *                      (Return Code and Reason Code), but      *
  *                      both are presented incorrectly in the   *
  *                      message.                                *
  ****************************************************************
  * RECOMMENDATION: Apply the PTF.                               *
  ****************************************************************
  VSAM is currently converting the entire two 4-byte values
  returned by Compression Services from hexadecimal to decimal
  when generating the IEC161I 253 message. This approach is
  incorrect because each byte within the two 4-byte fields has
  its own distinct, documented meaning. Treating the full word as
  a single integer obscures these individual byte-level semantics
  and results in misinterpretation of the return code and reason
  codes.
  

Problem conclusion

• The CMS return code and reason code will no longer be converted
  to decimal. They are now correctly displayed as hexadecimal
  values in the IEC161I 253 message.
  

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:

  UJ98790 UJ98791 UJ98792

Modules/Macros

• IDA0192Z
  

Fix information

• Fixed component name

  DFSMS VSAM

• Fixed component ID

  5695DF106

Applicable component levels

• R250 PSY UJ98790

     UP26/01/28 P F601

• R310 PSY UJ98791

     UP26/01/28 P F601

• R320 PSY UJ98792

     UP26/01/28 P F601

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.