CICS VR ddnames

A table that contains the ddnames for CICS® VR.

Table 1. CICS VR ddnames
CICS VR ddname Description
DWWARC1 Input log for the archive utility.
DWWCA Allocates the name of the output change accumulation data set into which CICS VR places the consolidated log records when running change accumulation for disaster recovery purposes.
DWWCON1-3 CICS VR recovery control data sets (RCDS).

If you are going to activate the CICS VR server address space, the RCDSs must be created using the RCDS naming convention described in Activating the CICS VR server address space.

If you do not plan on activating the CICS VR server address space, see Creating and maintaining the RCDS when not using the CICS VR server address space for information on creating the RCDS.
DWWCOPYn Output copies for the archive utility and log stream copy utility. Output and input copies for the RCDS utility.
DWWDMSG Output data set that contains a trace table of prologs and epilogs of the latest called modules. This ddname is used by the CICS VR server address space, the CICS VR dialog, and by CICS VR batch jobs. The DCB parameters for this data set are RECFM=VBA and LRECL=84. The default block size is 3120 bytes.

CICS VR server address space: During activation of the CICS VR server address space, CICS VR attempts to dynamically create, catalog, and allocate a data set to the DWWDMSG ddname if one does not already exist (using a specified naming convention). Tracing information then can be written to the allocated data set must the CICS VR server address space encounter a problem. See Activating the CICS VR server address space for further information.

CICS VR dialog: The data set that is allocated to the DWWDMSG ddname for the CICS VR dialog (in a CLIST or TSO/E logon procedure) must differ from the data sets that are allocated to the DWWDMSG ddname for the CICS VR server address space and by CICS VR batch jobs. Any valid data set name can be used.

CICS VR batch jobs: Specify SYSOUT=* for the DWWDMSG ddname allocation in CICS VR batch jobs. You might also allocate a data set to the DWWDMSG ddname in CICS VR batch jobs, but this data set must differ from the data sets allocated to the DWWDMSG ddname for the CICS VR server address space and CICS VR dialog.
DWWDUMP Output data set that contains tracing and diagnostic information, as requested by CICS VR. This ddname is used by the CICS VR server address space, the CICS VR dialog, and by CICS VR batch jobs. The DCB parameters for this data set are RECFM=VBA and LRECL=84. The default block size is 3120 bytes.

CICS VR server address space: During activation of the CICS VR server address space, CICS VR attempts to dynamically create, catalog, and allocate a data set to the DWWDUMP ddname if one does not already exist (using a specified naming convention). Dumps then can be written to the allocated data set if the CICS VR server address space encounter a problem. See Activating the CICS VR server address space for further information

CICS VR dialog: The data set that is allocated to the DWWDUMP ddname for the CICS VR dialog (in a CLIST or TSO/E logon procedure) must differ from the data sets that are allocated to the DWWDUMP ddname for the CICS VR server address space and by CICS VR batch jobs. Any valid data set name can be used.

CICS VR batch jobs: Specify SYSOUT=* for the DWWDUMP ddname allocation in CICS VR batch jobs. You might also allocate a data set to the DWWDUMP ddname in CICS VR batch jobs, but this data set must differ from the data sets allocated to the DWWDUMP ddname for the CICS VR server address space and CICS VR dialog.
DWWIN Data set that contains the CICS VR commands. You can either specify a sequential data set with 80-byte, fixed-length records, or include the CICS VR commands in-stream.
DWWLOAD DWWLOAD is optional, and defines the alternative load libraries to STEPLIB and the link list, after the top module from the 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. For example: 
//DWWLOAD DD DISP=SHR,DSN=DWW.SDWWLOAD
//        DD DISP=SHR,DSN=DWW.SDWWLENU
//        DD DISP=SHR,DSN=exits load library name
DWWLOG ddname used to allocate log data sets when not using the CICS VR ALLOCATE command. DWWLOG can also be used to specify the names of change accumulation data sets that are used during forward recovery processing.
DWWMSG Output data set containing CICS VR messages. This ddname is used by the CICS VR server address space, the CICS VR dialog, and by CICS VR batch jobs. The DCB parameters for this data set are RECFM=FBA and LRECL=133. The block size must be a multiple of 133.

CICS VR server address space: During activation of the CICS VR server address space, CICS VR attempts to dynamically create, catalog, and allocate a data set to the DWWMSG ddname if one does not already exist (using a specified naming convention). CICS VR server address space processes can then write various messages to the allocated data set. See Activating the CICS VR server address space for further information.

CICS VR dialog: The data set that is allocated to the DWWMSG ddname for the CICS VR dialog (in a CLIST or TSO/E logon procedure) differs from the data sets allocated to the DWWMSG ddname for the CICS VR server address space and CICS VR batch jobs. Any valid data set name can be used.

CICS VR batch jobs: Specify SYSOUT=* for the DWWMSG ddname allocation in CICS VR batch jobs. You might also allocate a data set to the DWWMSG ddname in CICS VR batch jobs, but this data set must differ from the data sets allocated to the DWWMSG ddname for the CICS VR server address space and CICS VR dialog.
DWWPRINT Output data set that contains the reports produced by CICS VR. This ddname is used by the CICS VR dialog and by CICS VR batch jobs. The DCB parameters for this data set are RECFM=FBA and LRECL=133. The block size must be a multiple of 133.

CICS VR dialog: The data set that is allocated to the DWWPRINT ddname for the CICS VR dialog (in a CLIST or TSO/E logon procedure) must differ from the data set allocated to the DWWPRINT ddname for CICS VR batch jobs. Any valid data set name can be used.

CICS VR batch jobs: Specify SYSOUT=* for the DWWPRINT ddname allocation in CICS VR batch jobs. You might also allocate a data set to the DWWPRINT ddname in CICS VR batch jobs, but this data set must differ from the data set allocated to the DWWPRINT ddname for the CICS VR dialog.
DWWSORT Output data set that contains sort messages and control statements from the change accumulation job. Usually specified as SYSOUT=*.