Can DWWLC create the DWWCOPY1 output dataset as RECFM=U?

The following feedback has been submitted to update the documentation for CICS VSAM Recovery to add a usage note to Using the log stream copy utility to copy your MVS log streams

DWWLC cannot use DCB specification RECFM=U for DWWCOPYn data sets as a RECFM=U data set would have incorrect records for recovery.(Each output record will be a logstream block instead of a logstream record.)

The DWWLC program creates the DWWCOPYn data sets with VB format to provide FTP sending to remote sites for recovery.

The CICS VR recovery utility (DWWCO) supports 2 formats of MVS log stream copies data sets:

• new format with variable-length blocked records(VB)

• old format with undefined-length (U) unblocked records

The support of the old format has been left for compatibility with CICS VR 2.3 log copies.

If you require RECFM=U for your logstream copy data set you can reformat a log stream copy data set from VB to U unblocked format using dfp utilities (for example, IEBGENER), or the CICSVR PRECOPY exit.

Here is an example of IEBGENER job that reformats the CICSVR logstreamcopy data set, produced by DWWLC:

 //userid JOB (acct),'userid',TIME=2
 //INIT EXEC PGM=IEBGENER,REGION=2M
 //SYSPRINT DD SYSOUT=*
 //SYSUT1  DD DISP=SHR,DSN=CICSVR.SYSA.LSCOPY1
 //SYSUT2  DD DSN=CICSVR.OLGA.LSCOPY1.U,UNIT=SYSDA,DISP=(,CATLG),
 //        SPACE=(CYL,(5,1)),DCB=(RECFM=U,BLKSIZE=32760)
 //SYSIN DD DUMMY