Parameter: HEARTBEAT_DEAD_CONNECTION_PERIOD_COUNT
Definition
Description and Use
The heartbeat mechanism is in charge of checking whether the instances are still alive by pinging them at regular intervals. The HEARTBEAT_DEAD_CONNECTION_PERIOD_COUNT parameter specifies the number of periods without response from an instance before considering the instance as down.
Notes:
- The dead connection timeout equals (number of periods * HEART_BEAT_POLLING_PERIOD).
- A value too small can make the heartbeat mechanism detect down connections even with a running instance because the remote instance may not have enough time to reply. A value too high makes service interruption very long when an instance is down.
- A similar parameter exists on client side through the com.highdeal.cnd.message.ServiceClientTuning class. Consult this class documentation and the SAP CC Java API Reference (Javadoc) for more information and user assistance.
Syntax and Constraints
Defined Constraints
The SAP CC Core Server system verifies the following constraints:
| Instance Type | Constraint |
|---|---|
| Rater instances |
The parameter must be greater than or equal to
1
.
|
| Updater instances |
The parameter must be greater than or equal to
1
.
|
| Guider instances |
The parameter must be greater than or equal to
1
.
|
| Bulkloader instances |
The parameter must be greater than or equal to
1
.
|
| Taxer instances |
The parameter must be greater than or equal to
1
.
|
| Dispatcher instances |
The parameter must be greater than or equal to
1
.
|
Technical Details
For more information, consult this section.
| Name | HEARTBEAT_DEAD_CONNECTION_PERIOD_COUNT
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| Category | Parameter | |||||||||||||||
| Type | Integer | |||||||||||||||
| Access (RO/RW) |
RW(-): Dynamic Read / Static Write
An immediate change is not possible.
For a deferred and permanent change, use the |
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| Groups | ||||||||||||||||
| Instance Types |
This system parameter is available in the following types of instances in a running SAP CC Core Server system:
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| Default Values (Factory Settings) |
The predefined default values are:
You can use a default value to reset the runtime value or the restart value (persistent) in the Admin+ user interface. Note A default value is part of the factory settings of the SAP CC Core Server systems. It differs from the original value set during the installation or after the Customizing activities. In Admin+, you can reset a parameter value to this default value, but it is not recommended:
reset command.
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| Constraints |
The SAP CC system checks the following constraints:
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