Correct LRECL for SEQFILES in Files Data Set UNLOAD

Products

• Disk Backup and Restore - MVS
• DISK BACKUP AND RESTORE- ADD-ON OPTIO
• DISK BACKUP AND RESTORE

Issue/Introduction

What is the correct LRECL for the SEQFILES output in a Files Data Set UNLOAD ?

Resolution

The LRECL value is overridden at open time and is no longer needed in the JCL.

Additional Information

So the DCB for the SEQFILES may look like - 

// DCB=(BLKSIZE=5900,DSORG=PS,RECFM=VB), 

But you can also remove the complete DCB statement, the result will be the same: 

Organization . . . : PS 
Record format . . . : VB 
Record length . . . : 316 
Block size . . . . : 5900 

You can override the BLKSIZE and set for example - 

// DCB=(BLKSIZE=0,DSORG=PS,RECFM=VB), 

This will result in: 

Organization . . . : PS 
Record format . . . : VB 
Record length . . . : 316 
Block size . . . . : 27998