3.9.3 Monitoring Batteries in the Database Servers

Note:

This topic applies only to Exadata X4 and earlier systems, which use batteries to protect the disk controller cache.

Note:

Exadata Storage Servers generate an alert when battery charge capacity is insufficient or the temperature is high, and when the battery should be replaced.

The battery charge capacity and battery temperature in the database servers can be monitored using the following commands:

Note:

If you are running Oracle Exadata System Software 19.1.0 or later, substitute /opt/MegaRAID/storcli/storcli64 for /opt/MegaRAID/MegaCli/MegaCli64 in the following commands:

# /opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -a0 | grep "Full Charge" -A5 | sort \
| grep Full -A1

The following is an example of the output from the command:

Full Charge Capacity: 1357 mAh
Max Error: 2 %

Proactive battery replacement should be done on batteries that show capacity less than 800 mAh and have maximum error less than 10%. Immediately replace any battery that has less than 674 mAh or has maximum error more than 10%.

The battery temperature can be monitored using the following command:

/opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -a0 | grep BatteryType; \
/opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -a0 | grep -i temper

The following is an example of the output from the command:

BatteryType: iBBU08
Temperature: 38 C
  Temperature                  : OK
  Over Temperature        : No

If the battery temperature is greater than or equal to 55 degrees Celsius, then determine the cause, and correct the problem.