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js_praveen · Beginner Joined: 09 Jan 2003 Posts: 20 Topics: 7

Hi

Is there anyway to create a seq file with an LRECL of more than 32k bytes?

Thank you

JSP

Bill Dennis · Posted: Fri May 16, 2003 8:03 am Post subject:

The Large Block Interface (LBI) of DFSMS allows blks larger than 32K on tape. I think up to 256K on 3590. Some IBM utilities will write these large blocks now, depending on system settings. For Assembler user pgms, you need a special DCBE control block to process. Read about LBI in the DFSMS Using Data Sets manual. I don't know if Cobol handles this.

Bill

js_praveen · Beginner Joined: 09 Jan 2003 Posts: 20 Topics: 7

Thanks Bill

JSP

bablack · Posted: Fri May 16, 2003 3:04 pm Post subject:

The LBI allow blocks (BLKSIZE) larger than 32K on tape, but not records (LRECL). Since you were asking about LRECL, I doubt that the LBI will help.

IBM does support records over 32K (and has for many years), but only for variable spanned (RECFM=VBS) and then you have to specially code for it. I never used it but as I recall you have to specify LRECL=X and code routines to assemble the record from its smaller pieces. Don't know if it is supported in higher languages like COBOL.

Bruce Black
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Bill Dennis · Posted: Fri May 16, 2003 3:09 pm Post subject:

Thanks for the correction, Bruce. I guess I didnt' read the question closely enough. I guess we'll see how JSP responds.

Bill