16.4.4 Using the PFM service automatic restart functionality

Organization of this subsection

(1) Automatic restart functionality
(2) Scheduled restart functionality

(1) Automatic restart functionality

The following figure shows an example of operating a system by using the automatic restart functionality. In this example, the automatic restart functionality checks the operating status of the Agent Collector service every three hours, and if the service stops, it restarts the service.

Figure 16‒15: Example of using the automatic restart functionality

Restart Configurations settings

Restart when Abnormal Status: Yes (default)

Agent Collector service settings

Auto Restart: Yes

Auto Restart - Interval (minute): 180

Auto Restart - Interval (minute): 5 (default)

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(2) Scheduled restart functionality

The following figure shows an example of operating a system by using the scheduled restart functionality. In this example, a PFM - Agent service is restarted at 9:00 every day.

Figure 16‒16: Example of using the scheduled restart functionality

Agent Collector service settings

Scheduled Restart: Yes

Scheduled Restart - Interval: 1 (default)

Scheduled Restart - Interval Unit: Day

Scheduled Restart - Origin - Year: 2007 (year)

Scheduled Restart - Origin - Month: 11 (month)

Scheduled Restart - Origin - Day: 1 (day)

Scheduled Restart - Origin - Hour: 9 (hour)

Scheduled Restart - Origin - Day: 0 (minute)

Notes:

If you use this product with the periodic restart function in areas where daylight saving time is used, note the following rules:

When daylight saving time takes effect, the clock is shifted one hour forward. Therefore, there will be an hour missing in the restart interval.

If the restart interval is set for a daily, weekly, or monthly interval, if the periodic restart is scheduled to occur during that missing hour, the restart will be performed one hour before the scheduled time instead. For example, if you are in the EST time zone, daylight saving time begins at 2:00 a.m. on the second Sunday of March. If the periodic restart is scheduled to occur between 2:00 a.m. and 3:00 a.m. on the second Sunday of March, the restart will be performed one hour before the actual scheduled time.

Example:

Suppose that you are in the EST time zone and the second Sunday of March is March 10. If the periodic restart is set to begin at 2:30 a.m. on January 10 and is to be performed every two months, the restart will be performed as follows:

Scheduled time	Restart time
2:30 a.m. on January 10	2:30 a.m. on January 10
2:30 a.m. on March 10	1:30 a.m. on March 10
2:30 a.m. on May 10	2:30 a.m. on May 10
2:30 a.m. on July 10	2:30 a.m. on July 10

When daylight saving time ends, the clock is shifted one hour back and the scheduled restart time might be duplicated.

If the restart interval is set for a daily, weekly, or monthly interval, if the periodic restart is scheduled for a time that occurs twice, a restart will be performed at a time after daylight saving time ends.

For example, if you are in the EST time zone, daylight saving time begins at 2:00 a.m. on the first Sunday of November, and the hour from 1:00 a.m. to 2:00 a.m. on the second Sunday of November occurs twice. If the periodic restart is scheduled between 1:00 a.m. and 2:00 a.m. on the first Sunday of November, the restart will be performed at a time after daylight saving time ends.

Example:

Suppose that you are in the EST time zone and the first Sunday of November is November 3. If the periodic restart is set to begin at 1:30 a.m. on September 3 and is performed every two months, restarts will be performed as follows:

Time	Restarted
1:30 a.m. on Sept. 3 (DST)	Yes
1:30 a.m. on Nov. 3 (DST)	No
1:30 a.m. on Nov. 3 (ST)	Yes
1:30 a.m. on Jan. 3 (ST)	Yes

When configuring the periodic restart function, do not specify a date or time that will cause a periodic restart time to exist during a time that will not actually occur.

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