Answer / raghuram

If the file is getting created in the job, we can identify it as it will be created by giving CI (control interval, CA (control area) parameters which are specific to VSAM creation

Answer / ashis

browse the file in Start 3.4 option then see whether data
and index present. this the only way. how u can identify
only looking into it without doing anything else. Probably
God can identify by looking into it.

Answer / harsha

I know its not a generic answer, but many system used BUFND
(Buffer data) and BUFNI(Buffer Index) parameter while using
any VSAM file.

Answer / becky

JCL contains EXEC PGM=IDCAMS for doing any operation in VSAM. From that we can identify VSAM file is used in the JCL by seeing the JCL code itself.

Answer / selvam a

If the VSAM file is updated in a job, then definitely there
will be a backup step prior to the update step. The backup
can be a DASD backup (using IDCAMS utility - Repro) or a
Tape backup (using ADDRSSU utility). And if the job abends,
there will be a separate JCL to delete/define this VSAM file
and restore it from the backup taken.
So by checking these utilities presence we can make sure
that JCL has a VSAM file.
More over in our system, we differentiate a vsam file by
including a 'V' as the last character of the second
qualifier Ex: XXXX.YYYV.ZZZZ
I am not sure of the other systems.

Answer / sj@iy

Not sure of how to indentify via JCL, but it can be
identified in COBOL program through the SELECT clause

SECLECT file ASSIGN TO FileSystemID-Filename

Here, FileSystemID identifies a file as either of the
following
a) VSAM - (Coded as VSA or VSAM; E.g. SELECT FILE1 ASSIGN
TO VSA-MyFile)
b) STL - STL File System (E.g. SELECT FILE1 ASSIGN TO STL-
MyFile)
c)RSD- Record Sequential Delimited File System.

If the FileSystemID is ommited, then the runtime option
FILESYS treats the file as VSAM.

what is pupose and meaning of the REGION keyword and what jcl statement is it associated with?

1 Answers  

What is a Generation Data Group (GDG)?

2 Answers  

How to search strings in multiple dataset with conditions 'string1 & string2'?

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Explain about LMQUERY�give a dialog information about a data set

0 Answers  

We can use PASS with permanent datasets also. THEN Which is the condition in which we may use PASS (instead of KEEP) with permanent data sets, while there is no need to specify UNIT and VOL for them like temporary data sets (in cas we use KEEP for permanent data sets) ?

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How to alter the parameters for the existing gdg?

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3 Answers  

Can a PS file be read in reverse order?If so,how

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Can we call instream to catalog and catalog to instream?

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what r the types of job control statements?

2 Answers  

What are the keywords associated with DCB? How can you specify DCB information? What is the OS precedence for obtaining that DCB information, ie. where does the system look for it first?

2 Answers