User manual

MX-ONE SYSTEM DESCRIPTION
86 21/1551-ASP 113 01 Uen N2 2014-01-28
6.4.3 Functional Change
The purpose of the functional change function is to carry out an update
or upgrade, that is, to replace one or several program units in the system
with new versions.
The function includes the following actions:
• Prepare the system for program unit change.
Commands changing the reload data are prohibited during the
duration of the functional change.
• Add new program units either by specifying on the command line or
using a file containing the program units. This can be done by the
upgrade script, or it can be done manually when installing a hot fix.
The program unit can be assigned a group number to coordinate
the change with other program units. The program unit can be a
common or regional function. In the former case, the program unit
is normally loaded in one server. In the latter case, the program unit
is normally loaded in all servers in the system.
• Change to the new program units, which means that the system
changes from the original program units to the new program units.
It is possible to group program units together to coordinate the
program.
• End the program unit change.
Commands changing the reload data are prohibited during the
duration of the functional change.
• Remove old program units from one or more servers by using a
command.
This can be done by the upgrade script, or it can be done manually
when installing a hot fix.
Program units that are absolutely essential for program execution
in a server cannot be removed.
If a fault occurs that generates a data reload after removal of
program unit or units and before a data backup is completed, an
alarm is sent and the affected program unit's data is not reloaded.
• Display program unit change information, which comprises the
following:
– Added program units and their group affiliation
– Revision information
– Active and passive program units versions