Use the time adjustment function

If you need to adjust the system time by two or fewer hours, use the time adjustment function to change the system time.

A time adjustment is preferred over manually changing the time of day system value because it incrementally speeds up or slows down the rate at which time moves forward rather than making one single, instantaneous change in time. A large jump in time, either forward or backward, can cause unpredictable errors if jobs are concurrently accessing system time.

If your system time is off more than 2 hours and you do not need to change the system time immediately, you can use multiple time adjustments to reach the desired time value. For example, if your system time is off 3 hours, you can make a 2-hour time adjustment and a 1-hour adjustment to make a total adjustment of 3 hours.

To make a time adjustment, complete the following steps:

  1. In iSeries™ Navigator, expand My Connections > server-name > Configuration and Service > Time Management > Time Adjustment.
  2. On the Time Adjustment dialog box, click Start New Time Adjustment. If a time adjustment is in progress, the current time adjustment will be stopped. Before proceeding, ensure that you should stop the current adjustment.
  3. Specify the desired time adjustment value.
  4. Click OK to begin the time adjustment.
  5. View the Time Adjustment fields on the Time Adjustment dialog box. The following fields should be displayed:
    • Adjustment in progress: Yes
    • Adjustment remaining: HH:MM:SS
    • Estimated time until completion: HH:MM:SS
  6. Click OK to close the Time Adjustment dialog box.

See the time adjustment online help for more details.

Parent topic: Update system time