13256 - Notification Table Utilization

Alarm Type:

UDR

Description:

The Notification table contains too many notifications that have not been delivered to application servers. This could be because:

• The rate at which notifications are being produced exceeds the rate at which they can be delivered.
• The servers are unavailable, and the notifications are being buffered for delivery at a later time.

Note:

If the number of notifications exceeds the percentage value set for the Major threshold, the notifications received after the threshold is met are cleared. Measurements are pegged.

The alarm severity depends upon the percentage of the Notification table being used:

• Minor when utilization exceeds 60%.
• Major when utilization exceeds 80%.
• Critical when utilization exceeds 95%.

Severity:

Major (Minor, Critical)

Instance:

N/A

HA Score:

Normal

Auto Clear Seconds:

0

OID:

xgSDMNotificationTableUtilization

Recovery:

1. Reduce the traffic rate to clear the alarm. The alarm clears when utilization falls below these thresholds:
   • <= 50% (clears Minor alarm)
   • <= 70% (clears Major alarm)
   • <= 90% (clears Critical alarm)
2. Check the PCRF to ensure the route is there for the PCRF MPE to talk to the User Data Repository message processor.
3. Verify that the application servers are available by checking the Main Menu > UDR > Maintenance > Subscribing Client Status page.
4. Depending on the reason that notifications cannot be delivered, it may be necessary to increase the number of notifications that can be stored by User Data Repository. It is recommended to call My Oracle Support.