HP 3000 Manuals HP 3000 Manuals
Migrating a TurboIMAGE/XL Database Back to MPE V/E
It may be desirable to move a database from an MPE/iX-based system back
to an MPE V/E-based system. Moving back to an MPE V/E-based system is
almost identical to the move from an MPE V/E-based system and will take
about the same amount of time. Note that the TurboIMAGE/XL data set
files must not exceed the MPE V/E file system limits.
If a TurboIMAGE/XL database is going to be moved back to an MPE V/E
system, the size of the data files in the database must not exceed 0.5
gigabytes. If any file exceeds the limit, you will not be able to
migrate the database back to an MPE V/E system. (You can quickly check
the file sizes by using the :LISTF,2 command.) You will encounter this
problem only if you have increased the capacities of a TurboIMAGE/XL
database to exceed the MPE/V file system limits.
When storing a TurboIMAGE/XL database for migration, you must use the
"transport" option of the :DBSTORE command. The transport option calls
the :STORE command and writes a different format tape. The tape can then
be read and restored on an MPE V/E-based system. The DBSTORE will
execute successfully without the transport option, but the STORE tape
will not restore on the MPE V/E-based system. The transport option also
instructs STORE to check the size of the data set files. If any files
greater than 0.5 gigabytes are encountered, the DBSTORE will terminate
when it writes past this limit.
Because DBSTORE will not give you advance warning of oversize files, you
should check the file sizes before running DBSTORE. The easiest way to
check the file sizes is to use a :LISTF ORDERS@,2 command to view all the
files associated with the ORDERS database and the sizes of the file
The following examples show how the ORDERS database was migrated from an
MPE/iX system back to an MPE V/E-based system.
Example of Using DBSTORE (MPE/iX)
This example shows how ORDERS is stored to tape on an MPE/iX-based
system.
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| |
| |
| :RUN DBSTORE.PUB.SYS:INFO="TRANSPORT" <<run with transport option>> |
| |
| HP30391C.00.00 TurboIMAGE/XL: DBSTORE (C) COPYRIGHT HEWLETT-PACKARD CO. 1987 |
| |
| WHICH DATABASE? ORDERS <<database name>> |
| |
| Transport Store-Restore for MPE/iX, v. A.01.00 WED, AUG 5, 1987, 10:03 AM |
| |
| FILES STORED: 7 <<# of files>> |
| |
| DATA BASE STORED <<confirmation>> |
| |
| END OF PROGRAM |
| : |
| |
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Example of Using DBRESTOR (MPE V/E)
This example shows how the ORDERS database is restored back on an MPE
V/E-based computer system.
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| |
| |
| :RUN DBRESTOR.PUB.SYS<<run command>> |
| |
| HP30391A.01.00 TurboIMAGE: DBRESTOR (C) COPYRIGHT HEWLETT-PACKARD CO. 1987 |
| |
| WHICH DATABASE? ORDERS<<database name>> |
| |
| STORE/RESTORE, VERSION A.01.00 (C) 1986 HEWLETT-PACKARD CO. |
| WED,AUG 5, 1987, 9:56 AM |
| |
| WILL RESTORE 1 DATABASES; NUMBER OF FILES ON TAPE = 7 <<system response>> |
| |
| FILES RESTORED: 7 <<# of files>> |
| |
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