Technical information

Routine Maintenance
157
Routine
Maintenance
Checking a Non-redundant System
1. Log on to the maintenance terminal and select
maintenance mode.
2. Enter the following commands:
SH ST AL Checks for system alarms. There
should be no alarms. If alarms are
present, see Flowchart 3: An Alarm is
Present on page 120.
DBMS STAT Checks the status of the initialized
flag. The flag should be on if the
system is in sync. If the flag is off,
enter DBMS SAVE from the active
plane.
PROG R DIS Displays the scheduled system
reset. By default, the system reboots
at 2:15 a.m. daily ONLY IF there is
memory fragmentation. To force a
system reboot at the scheduled time,
see Scheduling a System Reboot
(Non-redundant Systems) on page
95.
ME S Checks the status of the
communication links. All
communication links should be open.
PCM TO Checks for circuit switch link faults.
There should be no faults.
DBMS CH F Checks the sanity and current status
of the system. The number of
detected errors should be zero.
Otherwise, there is a problem with
the database and immediate steps
should be taken to begin recovery.
Note: This step takes 60 seconds to
complete.