Mainframe, MVS and zOS Discussion

Not a very useful document. Written in 1984, updated last in 1993. Odd things in it.

What's the difference between a box of tools and a box.

You are just... counting the records, right? What's the point of the CONVERT? Although you can CONVERT in OUTREC (with SyncSORT), it is a stupid suggestion to be made to you. They want you to go through making records variable-length just so you can count them? Why not just use the COUNT operator in...

WHEN=INIT operates on each current record unconditionally.

WHEN=GROUP and WHEN=INIT can be intermixed, and there can be more than one of each.

The first record of a group is the record which defines the group, which meets the conditions for recognising the start of a group.

Major League Baseball. Bill Gates. President of the United States of America. Such-like. Unfortunately the openings are limited, as they are with careers that are even more income-friendly than these.

You use IFTHEN=(WHEN=GROUP with BEGIN to identify the header and PUSH to copy the value from the header. The other data looks like a sequence number, WHEN=INIT with OVERLAY to create that.

Not everything you read on the internet is true.

Oh. Wait. I just... well, here, is obviously an exception.

Exactly what is the reason for the waiting? Five seconds? That's a loooonnnngggg..... time. Someone writing a book, and your program needs to know who did the murder?

Wherever your sub-program is CALLed from, its previous WORKING-STORAGE values will be retained. If you don't want that behaviour (for all or some of your fields) define the fields in the LOCAL-STORAGE SECTION. Fields in LOCAL-STORAGE are reallocated on each CALL. If they are defined with a VALUE cla...

You said you have 100-byte records. 100/2 = 49 (since you didn't say if that was F or V records). The "limit" is the number of "records" which can logically exist. If the smallest record, including the X'10', is 10 bytes, you could have a maximum of 10 per records (assuming F, el...

I have even discovered a magic incantation to get get a pop-up for the login (click on login). I can then set the Remember Me there, and get the exact same brush-off as with just using the Remember Me on a page.

Firefox 50.1.0 on Ubuntu 14.04 LTS. I have to login each time. I don't see a pop-up with the Remember Me, just an ordinary page, and Remember Me is just a cruel trick. (it should have a "mouse-over" text which says, "gotcha' again, gotcha' last time, you can't even remember that!"...

You need, on INREC, to have IFTHEN=(WHEN=(logicalexpression to test the record-length part of the RDW on each variable-length record for being 500, in binary (you define the field as binary). Then you BUILD=(1,4,5,476) and that is it.

You want to split records based on X'10'. For the final X'10' on a record, does all the data follow on that same record, or is there some data on the next record.

How many X'10's can you have? 49? Some lower number?

Sorry, missed that part as it only appeared with the data :-) Two techniques. Use FINDREP with DO=2 to change comma to X'FD' (or any non-display value). Use FINDREP to change the spaces-and-comma (you'll need multiple, it looks like, as you don't have a fixed number of trailing spaces). This can be ...

I think the latest z/OS has new limits.

You will have some records of 500 (or 496 or 504) bytes. You intend to lose 20 bytes. Which ones? Are they all the for same type of record (nicc's point)? If not, how are the records you want to lose data for identified?

How many records may there be? Record-length? Can logical records split across physical records? Where do the X'10' come from? Why can't the split be done there?

Use FINDREP to change C' ,' to C''

Can the logical records you are splitting "span" multiple physical records? What is their maximum length? What is their minimum length? Please show a representative sample of your input, and the expected output for that sample.