Explanation
D indicates that the volume on a device is to be
demounted. The control program has determined that this volume, mounted
in response to an earlier mount message, either:
- Contains labels that cannot be read due to a permanent input/output
error.
- Contains no labels or nonstandard labels when standard labels
were specified.
- Contains standard labels when no labels or nonstandard labels
were specified.
- Contains labels that are written in a density other than the density
specified.
If the DDNAME is supplied in the message text, the tape
volume to be demounted was recorded in ASCII.
In the message
text:
- dev
- The device number of the specified device.
- ddname
- The DD name.
- n
- The reason for the demount.
The reasons for the demounting follow:
if
n equals - 1
- The accessibility field of the volume label contains a nonblank
character which means that the volume is data set password protected
and may not be processed by the operating system.
- 2
- The accessibility field of the file header label contains a nonblank
character other than one, which means that the file may not be processed
by the operating system.
- 3
- The system cannot process the volume which is recorded in ASCII,
because the ASCII option was not specified at system generation.
- 4
- The control program has determined that conflicting data control
block attributes have been used to define the data set on the volume.
Some of the conflicting attributes may be the following:
- BUFOFF greater than 99.
- BUFOFF not equal to L on OUTPUT, OUTIN, OUTINX, or EXTEND.
- BUFOFF equal to L where RECFM is not equal to D.
- OPTCD not equal to Q where LABEL equals AL or AUL.
- OPTCD equal to Q where DSORG is not equal to PS.
- OPTCD not equal to Q where RECFM equals D.
- OPTCD equal to Q where RECFM equals V.
- LABEL equal to AL or AUL for a seven track tape device.
System action
The data set is not opened and processing continues.
Operator response
Demount the volume. The system will then request
that a new volume be mounted. Mount a volume with the correct density
and label type.
System programmer response
If the error recurs and the program
is not in error, look at the messages in the job log for more information.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support
Center. Provide the JCL, the associated volume, and the SYSOUT output
for the job.
Programmer response
Probable user error. Respond as indicated
for the following values of n:
- 1
- Make sure that the correct volume was specified in the job control
statements.
- 2
- Make sure that the correct file and volume are being used.
- 3
- The ASCII option was not specified at system generation, so bit
6 in the CVTOPTA field of the communications vector table is 0.
- 4
- Make sure that the data control block attributes do not conflict.
Source
Routing code
Descriptor code