Configuration Properties

Configuration properties control the behavior of the broker configuration.

You can view and dynamically update the values of these properties using either DGMGRL or Cloud Control. However, some properties can only be updated through DGMGRL.

A configuration property has configuration-wide scope; meaning that the value you set for the property applies uniformly to each member in the configuration.

Configuration properties are set using the EDIT CONFIGURATION SET PROPERTY command, as shown in the following examples.

Example 1

This example sets the FastStartFailoverThreshold configuration property to 90 seconds.

DGMGRL> EDIT CONFIGURATION SET PROPERTY FastStartFailoverThreshold=90;

Example 2

This example sets the ExternalDestination1 configuration property to point to a redo transport destination with a service name of Sales and a DB_UNIQUE_NAME of chicago.

EDIT CONFIGURATION SET PROPERTY ExternalDestination1='SERVICE=Sales DB_UNIQUE_NAME=chicago';

Note:

In general, quotation marks are not necessary around property values unless the case you specify needs to be preserved. By default, DGMGRL lowercases any string you supply, unless it is placed within quotation marks.

Quotation marks are required for any property values that include spaces or punctuation characters. For example, RedoRoutes.

The following sections describe the configuration properties:

• BystandersFollowRoleChange

• CommunicationTimeout

• ConfigurationWideServiceName

• ExternalDestination1

• ExternalDestination2

• FastStartFailoverAutoReinstate

• FastStartFailoverLagGraceTime

• FastStartFailoverLagLimit

• FastStartFailoverLagType

• FastStartFailoverPmyShutdown

• FastStartFailoverThreshold

• ObserverOverride

• ObserverPingInterval

• ObserverReconnect

• ObserverRetry

• OperationTimeout

• PreferredObserverHosts

• PrimaryDatabaseCandidates

• PrimaryLostWriteAction

• TraceLevel