PK50236: IMS DEDB FAST RECOVERY ENHANCEMENT IN SUPPORT OF IMS V10 APAR PK40894

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• IMS DEDB Fast Recovery enhancement in support of IMS V10 APAR
  PK40894 (PTF is UK25677).
  KEYWORDS: IMSV10TGT/K
  
  Possible issue without this manitenance:
   IMS restart hangs when OLC=GLOBAL is specified.
   Eventually, it terminates with the following:
    ABENDU2801-01 in DFSOLCS0, followed by messages:
    DFS2848E DYN ALLOC  FAILED FOR OLCSTAT, RC=00000004/0210
    DFS2848E DSN=IMS10P.Z0.OLCSTAT
  
  Keywords: MSGDFS2848E ABENDU2801 U2801
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IMS DEDB FAST RECOVERY Version 2         *
  *                 Release 2 (FMID=H1J2220) users who are using *
  *                 Global Online Change in IMS V10.             *
  ****************************************************************
  * PROBLEM DESCRIPTION: This APAR is DFR Version for IMS V10    *
  *                      APAR PK40894 (PTF is UK25677).          *
  *                      - APAR PK40894                          *
  *                      IMS restart hung about 17 minutes when  *
  *                      OLC=GLOBAL was specified.               *
  *                      Eventually, it terminated with the      *
  *                      following:                              *
  *                       ABENDU2801-01 in DFSOLCS0, followed    *
  *                       by messages:                           *
  *                       DFS2848E DYN ALLOC  FAILED FOR         *
  *                                OLCSTAT, RC=00000004/0210     *
  *                       DFS2848E DSN=IMS10P.Z0.OLCSTAT         *
  *                                                              *
  *                      DFSOLCS0 was changed in the following   *
  *                      manner:                                 *
  *                       1. The loop counter was reduced to 60  *
  *                          cycles, which reduces the wait to   *
  *                          5 minutes.                          *
  *                                                              *
  *                       2. Message DFS2957W is generated when  *
  *                          the wait cycle begins.              *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  - PK50236 for IMS DEDB Fast Recovery
  DFR was changed in the same manner as IMS V10 APAR PK40894.
  DFR issues MSGDFR1067W message during this wait and retry loop;
  without it the customer cannot understand why DFR is in a wait.
  And DFR reduces the wait to 5 minutes.
  

Problem conclusion

Temporary fix

Comments

• The following module has been modified.
  *
  DFRIGOCA - This module was changed as follows:
             1. MSGDFR1067W message is generated when the wait
                cycle begins.
             2. The loop counter was reduced to 60 cycles, which
                reduces the wait to 5 minutes.
  *
  ========================
  = DOCUMENTATION CHANGE =
  ========================
  IMS DEDB Fast Recovery for z/OS Version 2 Release 2 User's Guide
  and Reference (Document Number: SC27-0928-03) should be changed
  as follows.
  ================================================================
  Appendix B. Messages and Codes
   B.3 Messages
  *
  A new MSGDFR1067W message is added.
  *
  DFR1067W OLCSTAT DATA SET DYNAMIC ALLOCATION ENCOUNTERED AN
           ERROR; RETRYING THE ALLOCATION
  *
  Explanation: DFR is in a wait state during dynamic allocation of
  the OLCSTAT data set. This wait occurs because the OLCSTAT data
  set is being held by another user. DFR will re-attempt dynamic
  allocation of the data set and will continue attempting until
  one of the following occurs:
    - The OLCSTAT data set is no longer in use by the other user
    - The maximum number of retry attempts has been reached
  *
  System action: If the OLCSTAT data set is freed by the user
  holding it, DFR continues. If the maximum number of retry
  attempts has been reached, the job ends with an abend code
  U1051, accompanied by message DFR1051E.
  *
  System programmer response: If the job ends with an abend code
  U1051, follow the directions of message DFR1051E.
  *
  

APAR Information

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

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

  UK27900

Modules/Macros

• DFRIGOCA
  

Fix information

• Fixed component name

  DEDB FAST RECOV

• Fixed component ID

  5655E3200

Applicable component levels

• R220 PSY UK27900

     UP07/08/07 P F708

Fix is available

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