Recovery:

1. Verify the same alarm is displayed by both servers. The single breaker panel normally sends alarm information to both servers:
   • If this alarm is displayed by only one server, the problem is most likely with the cable or the server itself. Look for other alarms that indicate a problem with the server and perform the recovery procedures for those alarms first.
   • If this alarm is displayed by both servers, go to the next step.
2. For each breaker assignment, verify the corresponding LED in the PWR BUS A group and the PWR BUS B group is illuminated green.

   Figure 3-2 Breaker Panel Setting

   
   
   

   If one of the LEDs in the PWR BUS A group or the PWR BUS B group is illuminated red, a problem has been detected with the corresponding input power feed. Perform these steps to correct this problem:

   • Verify the customer provided source for the affected power feed is operational. If the power source is properly functioning, have an electrician remove the plastic cover from the rear of the breaker panel and verify the power source is indeed connected to the input power feed connector on the rear of the breaker panel. Correct any issues found.
   • Check the LEDs in the PWR BUS A group and the PWR BUS B group again.
     1. If the LEDs are now illuminated green, the issue has been resolved. Proceed to step 4 to verify the alarm has been cleared.
     2. If the LEDs are still illuminated red, continue to the next sub-step.
   • Have the electrician verify the integrity of the input power feed. The input voltage should measure nominally -48VDC (that is, between -41VDC and -60VDC). If the supplied voltage is not within the acceptable range, the input power source must be repaired or replaced.

     Note:

     Make sure the voltmeter is connected properly. The locations of the BAT and RTN connections are in mirror image on either side of the breaker panel.

     If the measured voltage is within the acceptable range, the breaker panel may be malfunctioning. The breaker panel must be replaced.

   • Check the LEDs in the PWR BUS A group and the PWR BUS B group again after the necessary actions have been taken to correct any issues found.
     1. If the LEDs are now illuminated green, the issue has been resolved; proceed to step 4 to verify the alarm has been cleared.
     2. If the LEDs are still illuminated red, skip to step 5 .
3. Check the BRK FAIL LEDs for BUS A and for BUS B.
   • If one of the BRK FAIL LEDs is illuminated red, then one or more of the respective Input Breakers has tripped. (A tripped breaker is indicated by the toggle located in the center position.) Perform the following steps to repair this issue:
   1. For all tripped breakers, move the breaker down to the open (OFF) position and then back up to the closed (ON) position.
   2. After all the tripped breakers have been reset, check the BRK FAIL LEDs again. If one of the BRK FAIL LEDs is still illuminated red, run syscheck and contact My Oracle Support.
4. If all of the BRK FAIL LEDs and all the LEDs in the PWR BUS A group and the PWR BUS B group are illuminated green, there is most likely a problem with the serial connection between the server and the breaker panel. This connection is used by the system health check to monitor the breaker panel for failures. Verify both ends of the labeled serial cables are properly secured. If any issues are discovered with these cable connections, make the necessary corrections and continue to the next step to verify the alarm has been cleared, otherwise it is recommended to run syscheck and contact My Oracle Support.
5. Run syscheck.
   • If the alarm has been cleared, the problem is resolved.
   • If the problem has not been resolved, it is recommended to contact My Oracle Support.