The DEVTYPE in the catalog is the actual value not the esoteric. The
only time there is an esoteric is if the catalog entry is created via
a Catalog Command (ie: IDCAMS/IEHPROGM/etc
that is true, since the DEFINE NONVSAM or CATLG command only knows the
esoteric or generic provided in the command
or a JCL DISP=CATLG in an IEFBR14 Step)
Not true. Even an IEFBR14 must allocate a device, so it knows the real
device type
From the JCL manual
If you have 3490 Magnetic Tape Subsystem models A10 and A20 defined
to
your system and you use one of the IBM-generated group names
SYS3480R or
SYS348XR, the system overrides the device type retrieved from the
catalog
with a device from the esoteric device
group.
SYS3480R and SYS348XR select any drive capable of reading a 3480 cart
(XR is for IDRC-compressed tapes). So every time you refer to a
cataloged dataset on a 3480, you have to provide a override of
UNIT=SYS3480R or SYS348XR.
the other alternative is to recatalog all of the 3480 tapes to a device
type of 3490. There were some utilities to do so. IBM may have
provided one and there were probably freebies to do it as well.
--
Bruce Black
Senior Software Developer
Innovation Data Processing
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