Modifying a subscription

You can change a subscription's properties and settings.

1. Click Configuration > Subscriptions.
2. Right-click on a subscription and select Properties.
3. You can modify the following values:

   Description

   Enter the description of the subscription.

   Project

   Select a project or click New Project to create a new project.

4. You can modify the following advanced subscription settings by clicking Advanced Settings:

   On the General tab, the following properties can be set:

   TCP Host

   Specify the TCP host that your source datastore will use to recognize the target datastore when the computer where CDC Replication is installed has multiple network cards. This is useful if you want to specify a host that is different from the host that you specified in the Access Manager perspective. The default option is Auto-select, which will automatically select the network card that can communicate with the target datastore. The host that you specified in the Access Manager perspective also appears by default as well as any alias that you configured in the Datastore Properties dialog box.

   Firewall Port

   Specify a port number for the new subscription.

   Mark subscription as persistent

   Enable if you want to specify that the subscription is persistent. This feature is only enabled for subscriptions whose datastores support the functionality. A persistent subscription restarts automatically after a recoverable error occurs. By default, a persistent subscription restarts only after a recoverable error when the instance is restarted. To allow a persistent subscription to restart after a subscription stops without the instance stopping and restarting, set the system property mirror_auto_restart_interval_seconds to a non-zero value. See the documentation for this parameter under the "System parameters" > "General product system parameters" section for your CDC Replication engine.

   Select the datastore to handle the transferable work

   Specify where transferable work will be performed, in order to minimize impact on the source or target datastore.

   Minimize network load

   Specify whether to minimize the network load where possible, even if it may result in increased replication latency. This option is only available when both the source and target datastores support the functionality.

   On the Propagation Control tab, the following properties can be set:

   Propagation Control

   Click Add and select the source ID for any subscription for which you want to prevent data from being replicated to the target.

   On the Communication Protocol tab, you can specify the communications protocol that will be used by the source datastore to communicate with the target datastore

   TCP/IP

   Specifies that TCP/IP will be used exclusively as the communication protocol.

   JMS

   Specifies that either TCP/IP or JMS message queues will be used as the communication protocol.

5. If you specified an External target datastore when mapping your tables, you can click Details and modify the appropriate settings.