Yeah, if the Tape has a Label.
Also, the Tape Label is a separate file, so the DSN is not exactly store
with Dataset.
On 2026-02-10 07:57, Seymour J Metz wrote:
That's a definite maybe. For labelled tapes the truncated name is stored with
the data.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
עַם יִשְׂרָאֵל חַי
נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
________________________________________
From: IBM Mainframe Discussion List <[email protected]> on behalf of Mike Shaw
<[email protected]>
Sent: Friday, January 30, 2026 12:16 PM
To: [email protected] <[email protected]>
Subject: z/OS MVS JCL User's Guide content error
External Message: Use Caution
Everyone,
The sentence below appears in the z/OS MVS JCL User's Guide in all versions
from z/OS V2R1 through z/OS V3R1, in the Chapter 12 section entitled
"Identification of Data Set":
"When creating a data set, assign a name to the data set in the DSNAME
parameter. The data set name is stored with the data set."
That second sentence is just flat wrong. The data set name can be stored in
an F1 DSCB in the VTOC on the volume where the data set resides, and it can
be stored in a catalog, but it is never stored with the data set.
Mike Shaw
MVS/QuickRef Support Group
Chicago-Soft, Ltd.
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