Blackout windows specify times during which normal change activity should not be
scheduled. Maintenance windows specify times during which change requests should be
scheduled. For example, create a blackout schedule for code freezes at the end of the
Conflict detection uses blackout and maintenance schedules to find potential
scheduling conflicts for the configuration items associated with a change request. When
conflict detection runs, either automatically or by manual request, conflict detection
determines if either type of defined schedule applies to the change request. If a
potential conflict is identified, a warning message appears and conflicts are listed
within the Conflict form section. View conflicts in the Change conflict calendar.
Associate one or more schedule entries with this newly created schedule. Users can
start applying schedules to determine when changes are implemented to CIs.
Complete one of the following steps to create a schedule.
|Create a blackout schedule
- Navigate to
- Click New.
|Create a maintenance schedule
- Navigate to
- Click New.
Note: When Conflict Detection is executed, it does not evaluate
maintenance schedules referenced on a configuration item
Complete the form, as appropriate.
||Enter a name for the schedule.
||Enter a description for the schedule.
||Select the time zone for the schedule.
Floating to evaluate
planned start and end dates on the change request
form for the logged-in user.
||Select the source of the blackout or maintenance
schedule. The available options are Business
Request, and CI
Note: When you select
Business Service or
Change Request in the
Source choice list, the
Applies to field does not
appear. The Applies to field
appears if you select CI
Class as the
Source which in turn allows
the selection of a CI Class
on which you can apply the schedule.
||Select the CI classification to which the conflict
detection is filtered.
||Select the conditions to specify the CIs to which the
This field does not appear when
Applies to is set to
fields used in conditions are not evaluated for
blackout or maintenance schedules.
Open the form context menu and click Save.
A blackout or maintenance schedule is created and the
, and Referenced By
The Blackout Schedule [cmn_schedule_blackout] table extends the Condition
Schedule [cmn_schedule_condition] table, which in turn extends the
Schedule [cmn_schedule] table. The Blackout Schedule table inherits the
domain properties from the Schedule table which has the Domain and
Domain path columns. As the Blackout schedule table makes use of the
same Child Schedule and Schedule Entry tables as the Schedule table,
domain support is identical, where the domain_master attribute is used
to derive Domain from a parent record. For more information, refer