Explanation
An error occurred during processing associated
with a DFP program that frees a buffer or extends the unscheduled
list (via a FREEDBUF macro issued either by the user or by the system).
The BDAM task recovery routine determined that a control block required
as input was not in the user's region and/or key.
In the message
text:
- rc
- The return code.
- cc
- The cleanup code.
- jjj
- job name
- sss
- step name
- ddname
- DDname
The hex return code identifies the control block
found to be outside the user's region or key. They are as follows:
- Return Code
- Explanation
- 01
- DCB (nothing was written to the GTF data set).
- 02
- DECB (nothing was written to the GTF data set).
- 03
- BCB (nothing was written to the GTF data set).
- 04
- USL (nothing was written to the GTF data set).
- 05
- Next IOB to get a buffer (nothing was written to the GTF data
set).
- 82
- DECB (the DCB was written to the GTF data set).
- 83
- BCB (the DCB and DECB were written to the GTF data set).
- 84
- USL (the DCB, DECB, and BCB were written to the GTF data set).
- 85
- Next IOB to get a buffer (the DCB, DECB, and BCB were written
to the GTF data set).
The hex cleanup code identifies the results
of attempting to clean up the processing left in partial stages of
completion.
- Cleanup Code
- Explanation
- 01
- Cleanup was unsuccessful. While attempting to clean up the buffer
and IOB queues the recovery routine program checked. Results of future
use of dynamic buffering with this DCB are unpredictable.
- 02
- Cleanup was successful. The DCB with dynamic buffering should
be reusable.
- 03
- Cleanup not attempted. It was determined unnecessary as all processing
was completed before the abnormal end. The DCB with dynamic buffering
should be reusable.
- 04
- Cleanup not attempted because DEBCHK found an incorrect DEB or
the audit trail bit was incorrect. Results of future use of dynamic
buffering with this DCB are unpredictable.
System action
Those control blocks indicated by the particular
return code (as specified above) are written to the GTF data set.
The task is ended.
Operator response
Start a generalized trace facility (GTF) trace,
and re-create the problem. Reply to message AHL100A with:
TRACE=SYS,USR,SLIP
On
the DD statement for the data set in error, specify:
DCB=DIAGNS=TRACE
System programmer response
If the error recurs and the program
is not in error, search problem reporting data bases for a fix for
the problem. If no fix exists, contact the IBM® Support Center. Provide the SYSOUT output
for the job.
Programmer response
Ensure the validity of the control block
from which the address of the block in error was taken. The DECB and
DCB were specified in the FREEDBUF macro as input to the SVC. Ensure
that the DCBBUFCB field in the DCB contains the correct address of
the buffer control block and the DCBDYNB field contains the correct
address of the unscheduled list (if address space is virtual). The
BCB or USL contain the address of the next IOB waiting to get a buffer,
if one was not available. Ensure that this address has not been overlaid.
Ensure also that the input DECB contains the address of the buffer
being freed (DECAREA field) and, if a buffer was requested for keys
also, that the DECKYADR field contains the correct address.
Source
Module
Routing code
Descriptor code