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

408 Chapter8
Using the Database Utilities
DBSTORE
either an MPE SYSGEN or STORE command could have been used instead of DBSTORE.
Because neither SYSGEN or STORE update the database time stamp and store flag, the
protection afforded by these mechanisms is not available if this form of backup is selected.
For this reason, it is highly recommended to use DBSTORE as the backup facility when
logging. See chapter 7 for further discussion of logging and recovery.
If the mirror database maintenance method is being used, storing the database on the
secondary system can be done differently than using the DBSTORE process. When using
DBRECOV STOP-RESTART recovery on the database, storing the database, RESTART file,
and the log files that were processed since the last successful RESTART can be done with an
MPE STORE command. DBRECOV STOP-RESTART places a time stamp in the RESTART file
and in the database to identify which RESTART file to apply to which database. If naming
conventions have been followed, an MPE STORE @ command can be used to store all the
necessary files and database(s). If DBSTORE is used, the user must remember to use an
MPE STORE command to store the RESTART file and the log files. For more information on
DBRECOV STOP-RESTART, refer to "The Mirror Database" in chapter 7.
Console Messages
After you supply the database name and DBSTORE 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.
If more than one volume is required to store the database, a request is displayed on the
console for the next one. The next tape must be mounted and the unit readied. The volume
that has been removed should be properly labeled with the database name and volume
number.
Example
:JOB MGR.ACCOUNTA Initiate job.
:RUN DBSTORE.PUB.SYS Initiate DBSTORE program.
ORDERS/SELL Supply database name and maintenance word.
:EOJ Terminate job.
After copying the ORDERS root file and all data sets, DBSTORE prints the following
message on $STDLIST:
DATABASE STORED
CAUTION If you need to cancel a DBSTORE, reply zero to the tape request:
:REPLY pin#,0
Do not use
Break and ABORT to abort the process when the tape mount is
requested. When DBSTORE is aborted by using
Break and ABORT, the date-time
stamp and store flag in the root file are updated even though the database
was not stored.