ASR: Sensors Indicate That RTC Battery Is Going Low.

Asset ID:	1-72-2384886.1
Update Date:	2018-05-21
Keywords:

Solution Type Problem Resolution Sure

Solution 2384886.1 : ASR: Sensors Indicate That RTC Battery Is Going Low.

Applies to:

Exadata X3-2 Hardware - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

On : N/A version, ENVIRONMENTAL

ASR: Sensors indicate that RTC battery is going low.

Hostname: ro04sw-iba01
Product Type: SUN DATACENTER INFINIBAND SWITCH 36
Summary:ASR: Sensors indicate that RTC battery is going low.

Fault event description:Sensors indicate that RTC battery is going low.
SunHwTrapComponentFault
sunHwTrapSystemIdentifier = 10.226.193.0
sunHwTrapChassisId = AK00087527
sunHwTrapProductName = Sun Datacenter InfiniBand Switch 36
sunHwTrapSuspectComponentName = /SYS/MB
sunHwTrapFaultClass = fault.chassis.device.battery.low
sunHwTrapFaultCertainty = 100
sunHwTrapFaultMessageID = http://support.oracle.com/msg/DCSIB-8000-45
sunHwTrapFaultUUID = 3dada6ef-40d2-40a1-b333-b02ff148369e
sunHwTrapAssocObjectId = .1.3.6.1.2.1.47.1.1.1.1.2.2
sunHwTrapAdditionalInfo =

Alerts received in last 30 days (limit 10)
Date Summary SR
26 Feb 2018 21:26:42 ASR: Sensors indicate that RTC battery
26 Feb 2018 20:36:51 ASR: Sensors indicate that RTC battery
26 Feb 2018 14:30:27 ASR: Sensors indicate that RTC battery
26 Feb 2018 12:46:07 ASR: Sensors indicate that RTC battery
26 Feb 2018 09:50:33 ASR: Sensors indicate that RTC battery
26 Feb 2018 09:35:43 ASR: Sensors indicate that RTC battery

ERROR
-----------------------
DCSIB-8000-45

Cause

@usr@local@bin@env_test.out
---------------------------
Starting Voltage test:
Voltage ECB OK
Measured 3.3V Main = 3.27 V
Measured 3.3V Standby = 3.37 V
Measured 12V = 11.84 V
Measured 5V = 4.99 V
Measured VBAT = 3.07 V <<<<<<<<<<<<<<<<<<<<<< (Voltage of the RTC Battery)
Measured 2.5V = 2.50 V
Measured 1.8V = 1.78 V
Measured I4 1.2V = 1.22 V
Voltage test returned OK <<<<<<<<<<<<<<<<<<<<<<
Environment test PASSED <<<<<<<<<<<<<<<<<<<<<<<

Oracle ILOM Voltage Targets and Properties

/SYS/MB/V_BAT
  Properties:
type = Voltage
ipmi_name = MB/V_BAT
class = Threshold Sensor
value = 3.073 Volts
upper_nonrecov_threshold = N/A
upper_critical_threshold = 3.494 Volts
upper_noncritical_threshold = N/A
lower_noncritical_threshold = 2.746 Volts <<<<<<<<<<<<<<<<<<<<<<<
lower_critical_threshold = 2.621 Volts <<<<<<<<<<<<<<<<<<<<<<<
lower_nonrecov_threshold = N/A
alarm_status = cleared

@var@log@messages
---------------------------
Mar 22 06:31:23 ro04sw-iba01 envd[1861]: low VBAT = 2.57 V
Mar 22 06:37:26 ro04sw-iba01 envd[1861]: Measured VBAT = 2.64 V
Mar 22 06:37:42 ro04sw-iba01 envd[1861]: low VBAT = 2.61 V
Mar 22 06:41:15 ro04sw-iba01 envd[1861]: Measured VBAT = 2.62 V
Mar 22 06:41:21 ro04sw-iba01 envd[1861]: low VBAT = 2.56 V
Mar 22 06:53:21 ro04sw-iba01 envd[1861]: Measured VBAT = 2.62 V
Mar 22 06:53:32 ro04sw-iba01 envd[1861]: low VBAT = 2.57 V
Mar 22 06:54:43 ro04sw-iba01 envd[1861]: Measured VBAT = 2.64 V

@usr@local@bin@spshexec_show_-script_@X@logs@event@list.out
---------------------------
10716 Thu Mar 22 09:34:47 2018 IPMI Log critical
  ID = 26f5 : 03/22/2018 : 09:34:47 : Voltage : MB/V_BAT : Lower Non-critic
  al going high : reading 2.76 > threshold 2.75 Volts
10715 Thu Mar 22 09:34:27 2018 IPMI Log critical
  ID = 26f4 : 03/22/2018 : 09:34:27 : Voltage : MB/V_BAT : Lower Non-critic
  al going low : reading 2.73 < threshold 2.75 Volts

Solution

As per the logs attached from the switch I could see no hardware issue, but just sensor (ASR) getting tripped for settings defined.
This can be monitored for few more days. (switch may show an incorrect time-of-day and log file timestamps will be inaccurate if RTC battery become empty)
The current indication is only because it crossed the threshold specified.

References

<NOTE:2083224.1> - ASR: Sensors Indicate That RTC Battery Is Going Low.
<NOTE:1155200.1> - PSH Procedural Article for ILOM-Based Diagnosis
<NOTE:1542806.1> - DCSIB-8000-45 - Infiniband Switch battery problem
<NOTE:1563586.1> - MUST Check when replacing the Battery in the Sun Datacenter InfiniBand Switch 36 or Sun Datacenter InfiniBand Switch Gateway
<NOTE:1582026.1> - How to replace the battery in an Infiniband Switch
<NOTE:464666.1> - How to Send a File to Oracle Support Using FTPS
<NOTE:1020204.1> - Collecting snapshot on ILOM 3.x and later platforms
<NOTE:1547088.2> - How to Upload Files to Oracle Support
<NOTE:2384885.1> - ASR: Sensors Indicate That RTC Battery Is Going Low.
<NOTE:1594992.1> - How to Generate iLOM Snapshot on Infiniband Switches

Attachments

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