Running CICS VR batch backout manually

You can manually create and submit a batch job that starts the CICS® VR batch backout program DWWBACK.

You can use the DWWBACK program to perform one of the following tasks:
  • Remove all updates made by a step in a batch job that encountered an abend.
  • Remove all updates made by a specified step, and all subsequent steps, of a batch job, regardless of whether the steps encountered an abend or not.
  • Remove all updates made by an entire batch job, regardless of whether the steps encountered an abend or not.
Figure 1. Sample JCL that can be used to start the CICS VR batch backout program.

//BTCHBACK JOB ACCOUNTING INFORMATION,REGION=4M      (1)
//BA       EXEC PGM=DWWBACK                          (2)
//STEPLIB  DD DSN=DWW.SDWWLOAD,DISP=SHR              (3)
// DD DSN=DWW.SDWWLENU,DISP=SHR
//DWWLOAD DD DISP=SHR,DSN=DWW.SDWWLOAD               (4)
//        DD DISP=SHR,DSN=DWW.SDWWLENU 
//        DD DISP=SHR,DSN=exits load library name
//DWWMSG   DD SYSOUT=*                               (5)
//DWWPRINT DD SYSOUT=*                               (6)
//DWWCON1  DD DSN=DWW.DWWCON1.GRPPROD,DISP=SHR       (7)
//DWWCON2  DD DSN=DWW.DWWCON2.GRPPROD,DISP=SHR       
//DWWCON3  DD DSN=DWW.DWWCON3.GRPPROD,DISP=SHR       
//DWWIN    DD *                                      (8)
   .
   CICSVR batch backout commands
   .
/*                                                                           
//
Descriptions of the numbered JCL statements are as follows:
  1. The JOB statement conforms to your environment's standards.
  2. The CICS VR batch backout program to be run is DWWBACK.
  3. STEPLIB defines the name of the CICS VR load library if it is not allocated in the link list.
  4. DWWLOAD is optional, and defines the alternative load libraries to STEPLIB and the link list, after the top module from EXEC statement has been loaded. After the top module initialization, all following module loads, supplementary CICS VR modules, and CICS VR exits are from these alternative load libraries.
  5. DWWMSG defines the output data set that contains the messages produced by CICS VR. This is usually defined as a SYSOUT data set. The DCB parameters for this data set are RECFM=FBA and LRECL=133. The block size can be provided on the DD statement, and must be a multiple of 133. The default block size is 133.
  6. DWWPRINT defines the output data set that contains the reports produced by CICS VR. This is usually defined as a SYSOUT data set. The DCB parameters for this data set are RECFM=FBA and LRECL=133. The block size can be provided on the DD statement, and must be a multiple of 133. The default block size is 133.
  7. DWWCONx defines the RCDSs that were allocated to the CICS VR server address space when the batch job that made the updates you want to back out was originally run.
  8. DWWIN defines the input data set containing the CICS VR commands. You either can specify a sequential data set with 80-byte, fixed-length records, or include the commands in-stream. For an explanation of the available commands and keywords, see Understanding the CICS VR batch backout command and keywords.