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what is the meaning of the following DD Name

 
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k.pavankumar

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Joined: 22 May 2006
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PostPosted: Fri Jun 23, 2006 12:10 pm    Post subject: what is the meaning of the following DD Name
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Hi People,

I have seen lots of Programs in Production, I have seen that in some programs, the select statement will be as follows:

SELECT ITEM-FILE ASSIGN TO UT-S-ITEM.

In the above statement what does it mean UT-S. I have seen the related JCL to that program I have found the DD name as Only ITEM.

I have also seen the following select also.

SELECT ITEM-FILE ASSIGN TO AS-ITEM.

Could any one help me in this regard.

Advance Thanks icon_lol.gif
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prashantshinde

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PostPosted: Fri Jun 23, 2006 3:09 pm    Post subject: Re: what is the meaning of the following DD Name
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hi,
I don't know the meaning of first one . But in the second one the term AS-ITEM means there is file named ITEM is ESDS file.

We use 'AS ' suffix for ESDS files (only) to define in INPUT-OUTPUT section.
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ralph_v

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PostPosted: Fri Jun 23, 2006 8:37 pm    Post subject: Re: what is the meaning of the following DD Name
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UT-S is basically used to refer to TAPE datasets.
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calspach

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PostPosted: Fri Jun 23, 2006 9:21 pm    Post subject:
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Most installations don't require that you specify that anymore. At one time, as Ralph said they would signify if it was a tape, Dasd, or whatever. It doesn't hurt to leave them in however, the system will still find the file regardless now.
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superk

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PostPosted: Fri Jun 23, 2006 9:25 pm    Post subject: Re: what is the meaning of the following DD Name
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UT-S is Unit Sequential (basically any QSAM dataset access).
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mmwife

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PostPosted: Sat Jun 24, 2006 9:00 pm    Post subject:
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As I recall this was dropped as a requirement prior to COBOLII and I'm certain that it wasn't required in COBOLII.

With the exception of AS- for ESDS files, the more recent versions of IBM's COBOL compiler do not use that designation anymore.
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karthi_ind

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PostPosted: Mon Aug 14, 2006 1:37 pm    Post subject: Re: what is the meaning of the following DD Name
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The answer for you question is

SELECT INFILE ASSIGN TO UT-S-INFILE
OR
SELECT INFILE ASSIGN TO DA-S-INFILE

What they mean actually?

First part in DDNAME: - Device Class
UT stands for Utility (Tape or Sequential Disk)
DA stands for Direct-Access (disk)

Second part in DDNAME: - Method of Organization
S ? Sequential (Printer, terminal, disk or tape)
I, R, D ? Disk files to be accessed randomly
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ofer71

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PostPosted: Mon Aug 14, 2006 1:57 pm    Post subject:
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You can see it in the fine document.

O.
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sachinbhavsar

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PostPosted: Mon Aug 14, 2006 3:13 pm    Post subject: Re: what is the meaning of the following DD Name
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Hi,

* I think UT-S is defining UTILITY SEQUENTIAL file.

* It may be PS or ESDS.
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