OA62816: RMM MAY PERMIT TO OWERWRITE DATA USING DB2 IMAGE COPY UTILITY

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Writting multi DB2 image copies into multivolume tape
  might lead to overwrite data on tape managed by RMM
  .
  DB2 Image Copy tool opening with INOUT a standard labeled tape
  data set to read it forward but the volume that open has
  positioned the data set to is not the actual first volume of the
  data set may receive following messages:
  
  IEC501A M dev,tapevol2,SL,,jobname,stepname,dsname -
  RACK=tepavol2
  IEC712I dev,tapvol2,jobname,stepname,ddname-nu READ - NOT FIRST
  VOLUME OF DATA SET
  IEC716I nu:TAPE MULTIVOLUME LIST CORRECTED
  IEC502E R dev,tapevol2,SL,jobanme
  *IEC501A M dev,taoevol1,SL,,jobanme,stepname,dsname
  
  In that case, RMM does not reject the mount request permitting
  the dataset to be overwritten from first and seconde volume
  

Local fix

• BYPASS/CIRCUMVENTION:
  Apply fix
  
  RECOVERY ACTION:
  Customer should terminate the utility and re-execute the job.
  More info in our DB2 online doc at following url:
  https://www.ibm.com/docs/en/db2-for-zos/12?topic=copy-restart
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All DFSMSrmm users having option MASTEROVERWRITE(ADD)        *
  * specified in their EDGRMMxx parmlb member and using          *
  * applications writing to tapes with the OPEN mode INOUT, for  *
  * example, DB2 Image Copy tool.                                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * In the case when an application program opens a tape data    *
  * set with INOUT, but the volume that the open processing has  *
  * positioned the data set to, is not the first volume of the   *
  * data set, then  after mounting the requested volume in       *
  * response to IEC501A:                                         *
  *                                                              *
  * *IEC501A M 0590,A10511,SL,,JOB1,STEPN,                       *
  *   DSN1 - RACK=A10511                                         *
  *                                                              *
  * the following messages get issued unexpectedly:              *
  *                                                              *
  *  IEC712I 0590,A10511,JOB1,STEPN,TAPE                         *
  *   READ - NOT FIRST VOLUME OF DATA SET                        *
  *  IEC716I TAPE    :TAPE MULTIVOLUME                           *
  *   LIST CORRECTED                                             *
  *  IEC502E R 0590,A10511,SL,JOB1,STEPN                         *
  *   - RACK=A10511                                              *
  *                                                              *
  * This is followed then by the subsequent mount requests for   *
  * the volumes from the multivolume list:                       *
  *                                                              *
  * *IEC501A M 0590,A10510,SL,NOCOMP,JOB1,                       *
  *   STEPN,DSN1 - RACK=A10510                                   *
  *  IEC502E K 0590,A10510,SL,JOB1,STEPN,                        *
  *   DSN1 - RACK=A10510                                         *
  * *IEC501A M 0590,A10511,SL,NOCOMP,JOB1,                       *
  *   STEPN,DSN1 - RACK=A10511                                   *
  *                                                              *
  * Provided that the application program actually performs      *
  * writing, this results in the dataset being overwritten on    *
  * the volumes mounted.                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply the applicable PTF(s).                                 *
  ****************************************************************
  The program does not provide the correct processing for the case
  described.
  The volume should have been rejected with the message
   EDG4051I VOLUME volser REJECTED. INSTALLATION OPTION PREVENTS
   OVERWRITE OF FILES ON MASTER VOLUMES
  right after mounting it in response to the very first mount
  request.
  

Problem conclusion

• The problem has been fixed.
  

Temporary fix

• *********
  * HIPER *
  *********
  
  *********
  
  *********
  The ++APAR is available upon request.
  

Comments

APAR Information

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

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

  UJ08151 UJ08152 UJ08153

Modules/Macros

• EDGSOCE
  

Fix information

• Fixed component name

  DFSMSRMM

• Fixed component ID

  5695DF186

Applicable component levels

• R230 PSY UJ08151

     UP22/04/27 P F204 ¢

• R250 PSY UJ08153

     UP22/04/27 P F204 ¢

• R240 PSY UJ08152

     UP22/04/27 P F204 ¢

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.