Chapter 3. Operating NetView FTP V2.2.1 MVS - IBM

The ESTAE Recovery Routine of the Server Subtasks
This recovery routine is implemented in module DVGMSAX. It performs the following
steps:
1. If the abnormal termination results from the following macroinstructions:
� OPEN
� PUT (QSAM)
� CLOSE (QSAM)
� STOW (QSAM)
� WRITE (QSAM).
and an SDWA could be provided, control is given back immediately to the
RTM, requesting it to give control to a retry routine. The retry routine issues an
error message and then performs all necessary termination processing for the
file-transfer request. No dump is taken. If, in this case, no SDWA was
obtained by the resource termination manager, no retry is requested by
NetView FTP V2.2.1 MVS and the processing in the recovery routine continues.
2. The appropriate return and reason codes for the interrupted transfer are set up
and the file-transfer request is updated in the request queue. It is given the
status finished.
3. The NetView FTP V2.2.1 MVS symptom record is set up and dumped via a
SNAP macroinstruction.
4. The following storage areas are dumped via SNAP:
� Dynamic work areas used by the server subtask that abended
� Dynamic work areas used by the server main task
� Area used by module DVGMCQI (queue handler interface module)
� Area used by the pre-transfer user-exit routine
� Area used by the post-transfer user-exit routine
� Area used by the post-conversation user-exit routine
� Area used by the message definition module for the NetView FTP log file
� Area used by the message definition module for the file-transfer report file.
5. A storage dump is produced via SNAP, using the following parameters:
PDATA All
SDATA LSQA, SWA, CB, TRT, DM, ERR, IO, Q.
6. A message indicating the abnormal termination event is issued.
7. If necessary, the input or output data set is closed.
Note: No checkpoint is taken in case of an abnormal end. If you want to
restart the transfer, NetView FTP V2.2.1 MVS uses a checkpoint that was
taken earlier, if one exists.
8. If an abnormal termination occurred in the pre-transfer user exit, the server
subtask terminates immediately without any recovery action.
Chapter 13. Handling NetView FTP V2.2.1 MVS Abnormal Terminations 159