MVSFORUMS.com

[pzmohanty]

hi all,

is it possible to concatenate INSTREAM data to a list of DATASETS???

to put the Question in better way, we all know the way to concatenate DATASETS is as follows:

//DDNAME dd dsn=XXXXX,disp=shr
// dd dsn=yyyyy,disp=shr
// dd dsn=zzzzzz,disp=shr

but can we concatenate INSTREAM data to these concatenation of datasets.

ie can we concatenate following instream data

// DD *
kfgjkdfdfkghdgk
kgjkjgkhkhkjgkfjh
/*

to the above mentioned Concatenation list of datastes.


Thanx in advance

P.R.Mohanty
Kanbay
_________________
Priya Ranjan Mohanty
Consultant
Kanbay Software (I) pvt. Ltd.
Hyderabad

[Cogito-Ergo-Sum]

Didn't you try?

Yes, concatenation is allowed/possible. But, it really depends on the s/w that you are trying to execute. For example, in a list of concatenated datasets, the one with highest blocksize must be at top. OTOH and AFAIK, DFSORT requires all datasets have same LRECL also.

So, basically, you can.
_________________
ALL opinions are welcome.

Debugging tip:
When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.
-- Sherlock Holmes.

[semigeezer]

The requirement to have the largest blocksize as the 1st data set was removed a loooooong time ago. Only if your program actually checks it (doubtful), woud that matter.

[Frank Yaeger]

As Cogito says, it depends on the program that is reading the concatenated data sets. The system allows it, but the program must be able to handle the like or unlike attributes of the other data sets. Instream data is just a data set with specific attributes (RECFM=FB, LRECL=80, BLKSIZE=n*80) and is no different with respect to concatenation than any other type of data set with the same attributes.

Since DFSORT was mentioned, I'll quote the main rules for using SORTIN concatenation with DFSORT:

---------------------------------------------------------------------------------
RECFM must be either all fixed-length or all variable-length for the data sets in the concatenation.

BLKSIZE can vary. However, if a tape data set has the largest block size and is not first in the concatenation, you must specify BLKSIZE explicitly on its DD statement in the following two situations:

o Blockset is selected and the tape data set has a block size greater than 32760 bytes, but the block size is not available from DFSMSrmm(TM) or ICETPEX.

o Blockset is not selected.

With fixed-length records, LRECL must be the same for all data sets. With variable-length records, LRECL can vary, but the first data set must have the largest LRECL.
---------------------------------------------------------------------------------

Each program has its own rules for the types of concatenation it allows.
_________________
Frank Yaeger - DFSORT Development Team (IBM)
Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
DFSORT is on the Web at:
www.ibm.com/storage/dfsort

[Brian]

You may concatenate instream data with catalogued data. You can try this

[slade]

Brian's example reminded me of this technique for providing in-stream data to a cataloged procedure:

In proclib...