ALM-12202 Process Memory Usage Exceeds the Threshold

Alarm Description

The system checks the memory usage of main OMS processes every 30 seconds. This alarm is generated when the memory usage of main OMS processes is greater than 90% (default value) of the maximum memory.

This alarm is cleared when the memory usage of main OMS processes is less than or equal to 90% of the maximum memory.

This alarm applies only to MRS 3.3.1 or later.

Alarm Attributes

Alarm ID	Alarm Severity	Auto Cleared
12202	Major	Yes

Alarm Parameters

Type	Parameter	Description
Location Information	Source	Specifies the cluster for which the alarm was generated.
	ServiceName	Specifies the service for which the alarm was generated.
	RoleName	Specifies the role for which the alarm was generated.
	HostName	Specifies the host for which the alarm was generated.
Additional Information	Trigger Condition	Specifies the alarm triggering condition.

Impact on the System

If the memory usage of main OMS processes is too high, the performance of these processes deteriorates, and even memory overflow occurs. As a result, main OMS processes are unavailable, and OMS tasks are slow or fail to run.

Possible Causes

The memory usage of main OMS processes is too high or the memory is inappropriately allocated.

Handling Procedure

Check the memory usage of main OMS processes.

On FusionInsight Manager, choose O&M > Alarm > Alarms. In the alarm list, expand the alarm details, record the process name in Location, click the reported host name, and record the service IP address of the host.
Choose System > OMS to view the OMS Process Memory Usage Ratio chart. Check whether the memory usage of the processes reaches the threshold (90% by default) at the time when the alarm is generated.
If no chart is available, click the drop-down arrow on the right, select Customize, select the desired item, and click OK.
- If yes, go to 3.
- If the threshold is not reached, go to 6.
Contact O&M engineers to modify the memory configurations of the processes.
Restart the processes for which the alarm is generated.
Check whether the alarm is cleared in 10 minutes.
- If yes, no further action is required.
- If the threshold is not reached, go to 6.

Collect fault information.

On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
Expand the Service drop-down list, and select OmmServer for the target cluster.
Click the edit icon in the upper right corner, and set Start Date and End Date for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
Contact O&M engineers and provide the collected logs.