Contents

1   Alarm Description

The alarm is raised when DBN memory use exceeds a threshold.

Table 1    DBS Memory Limit Reached Alarm Causes

Alarm Cause	Description	Fault Reason	Fault Location	Impact
Reconfiguration ongoing	DBN is redistributing data either because a node being locked or unlocked or because a node failed.	N/A	N/A	Node lock, node unlock, and scaling operations must not be initiated until the alarm clears, as these can temporarily increase memory usage even more.
Overload	The system is overloaded.		Dimensioning

Note:  

The alarm can be raised during a reconfiguration operation.

2   Procedure

2.1   Handle Alarm DBS, Memory Limit Reached

Prerequisites

• This instruction references the following document:
  • Data Collection Guideline
• No tools are required.
• Before starting this procedure, ensure that the following condition is met:
  • The alarm is raised.

Steps

1. Is the system overloaded?

   Yes: Decrease load on the cluster, if possible.

   No: Continue with the next step.

2. Is data redistribution (reconfiguration) in progress?

   Yes: Wait for the reconfiguration to finish, then continue with the next step.

   No: Consult the next level of maintenance support. Further actions are outside the scope of this Operating Instruction.

3. Is the alarm cleared?

   Yes: Job is completed.

   No: Consult the next level of maintenance support. Further actions are outside the scope of this Operating Instruction.