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

The ESTAE Recovery Routine of the Server Main Task
This recovery routine is implemented in module DVGMSAM. It performs the following
steps:
1. All outstanding timers are canceled.
2. All subtasks are informed to terminate immediately. This implies that any
current file transfer is terminated after a checkpoint has been taken.
3. The NetView FTP V2.2.1 MVS symptom record is set up and dumped via a
SNAP macroinstruction.
4. A storage dump is produced via SNAP using the following parameters:
PDATA All
SDATA LSQA, SWA, CB, TRT, DM, ERR, IO, Q.
5. A message indicating the abnormal termination event is issued.
6. If the resource termination manager can provide an SDWA, and the server
main line processing has already set up a retry routine address, control is given
back to RTM, requesting that the retry routine should get control. The retry
routine tries to finish the processing of the server in a controlled manner. This
implies the following:
� The cleanup processing for the terminated file transfers is done, including
user notification and writing of the NetView FTP log file and the file-transfer
report file.
� All server subtasks are detached after they have finished.
� The data sets previously opened by the server main task are closed.
� The server’s ACF/VTAM ACB is closed.
� The CLOSE queue handler command is issued to disconnect the server
from the queue handler.
Note: If the operator terminates the server with a CANCEL command, the
retry routine cannot be scheduled.
7. If no SNAP dump can be issued, a system dump is requested with the
DUMP=YES option of the SETRP macroinstruction. Otherwise, no system
dump is requested.
158 NetView FTP V2 MVS Installation, Operation, and Administration