IBM Mainframe Forum

by **bhanu1225** » Wed Dec 29, 2010 12:54 pm

Hi,

In JCL,

I wrote like this,

//out2 dd dsn=xyz.abc.out2.se,
// disp=shr
//out3 dd dsn=*.out2,
// disp=shr,
// vol=ref=*.out2

all these in only one step.
what does out3 dsn refer to ?

by **Robert Sample** » Wed Dec 29, 2010 3:57 pm

What does the JCL reference manual tell you?

by **steve-myers** » Wed Dec 29, 2010 5:09 pm

What happens when you try it?

by **steve-myers** » Wed Dec 29, 2010 6:12 pm

Hint: What happens when you use

Select all

//DD1 DD DISP=SHR,DSN=MY.DATATSET
//DD2 DD DISP=SHR,DSN=MY.DATATSET

What's the practical difference between

Select all

//DD1 DD DISP=SHR,DSN=MY.DATATSET
//DD2 DD DISP=SHR,DSN=MY.DATATSET

and

Select all

//DD1 DD DISP=SHR,DSN=MY.DATATSET
//DD2 DD DISP=SHR,DSN=MY.DATATSET,VOL=REF=*.DD1

Obviously, the second example does not have to a catalog lookup for DD2, but what's the effect in allocation?

by **dick scherrer** » Thu Dec 30, 2010 3:14 am

Hello and welcome to the forum,

I wrote like this,

Why did you do this?

If you explain what you are trying to accomplish, we can provide relies you may find more useful.

If you have not done so already, you need to download (or set bookmarks to) the JCL Reference Manual and the User Guide.

IBM Mainframe Forum

Doubt in dsn

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