TurboIMAGE/XL Database Management System Reference Manual MPE/iX V6.5 (30391-90011)

Chapter 8 413
Using the Database Utilities
DBUNLOAD
DATA SET m : x ENTRIES[EXPECTED, t LOST!!]
For example:
DATA SET 1: 3 ENTRIES
DATA SET 2: Broken Chain at Entry #2, following Entry #1
Chain Head is Entry #5 of Data Set #1
KEY = AA
4 entries expected, 3 entries salvaged
DATA SET 2: 11 ENTRIES EXPECTED; 1 LOST!!
5 When the end of a volume is encountered, DBUNLOAD prints this message:
END OF VOLUME n , y WRITE ERRORS RECOVERED
where n is the number of the volume and y is the number of write errors
from which DBUNLOAD successfully recovered. DBUNLOAD also instructs the
operator to save the current volume and mount a new one by printing the
following two messages on the system console (where z is the logical device
number of the tape drive and n is the volume number):
SAVE VOLUME ON LOGICAL DEVICE z AS n
MOUNT NEXT VOLUME ON LOGICAL DEVICE z .
6 After the data sets have been successfully copied, DBUNLOAD issues a
completion message.
DATABASE UNLOADED
END OF PROGRAM
Console Messages
After you supply the database name and DBUNLOAD opens the output file, a message is
displayed on the system console. A tape must be mounted on the appropriate unit and
identified through an operator reply. Refer to the Volume Management Reference Manual
for instructions about console interaction.
Using
ControlY
When executing DBUNLOAD in session mode, you can press
ControlY to request the
approximate number of entries in the current data set that have already been written.
DBUNLOAD then prints the following message on $STDLIST:
<CONTROL Y>DATA SET m : x ENTRIES HAVE BEEN PROCESSED