PH15155: POINT-IN-TIME RECOVERY OF HISAM DB WITH OVERFLOW FAILS WHEN LOGSARE INVOLVED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Point-in-time recovery of HISAM DB with overflow fails when logs
  are involved.  If the point in time is before updates, so that
  only the image copy is needed, everything works ok.  However, if
  the point in time is after updates, then the KSDS is recovered
  ok, but the overflow ESDS is filled up until it fails at the
  4GB limit.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IMS Recovery Solution Pack for z/OS      *
  *                 Version 2 Release 1 users ( FMID=HAHM210 )   *
  ****************************************************************
  * PROBLEM DESCRIPTION: Recovery of HISAM overflow data set     *
  *                      fails with ABEND S0C4 ( ABEND0C4 )  as  *
  *                      a result of a loop that updates the     *
  *                      overflow data set with log records.     *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  If HISAM's overflow data set is defined as blocked VSAM ESDS
  (i.e. multiple records in a CI), the correct RBA of the next
  data set record cannot be obtained in the ESDE Log Marge
  process.
  As a result, an endless loop occurs in the update process of
  the overflow DB, the segment of the first log is repeatedly
  written to the DB and caused ABEND S0C4 ( ABEND0C4 ).
  

Problem conclusion

• FRXIVCN0 is modified to support ESDS with blocked records.
  In addition, when only 1st block exists in IC, the bug that
  unnecessary dummy block is written in 2nd block in log marge
  process for non-blocked ESDS is also corrected.
  

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:

  UI64999

Modules/Macros

• FRXIVCN0
  

Fix information

• Fixed component name

  IMS RCVR SOLUTN

• Fixed component ID

  5655V8600

Applicable component levels

• R210 PSY UI64999

     UP19/08/30 P F908 ¢

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.