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Create data source interceptors

A data source interceptor intercepts dynamic cluster scale up operations to validate that the scaling operation will not overload the database.

To create a data source interceptor:

  1. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
  2. In the left pane, expand Diagnostics and select Interceptors.
  3. Select the Data Source Interceptors page.
  4. Click New.
  5. On the Create a Data Source Interceptor page:
    1. Enter a name for the data source interceptor in the Name field.
    2. In Connection Quota, enter the maximum number of connections that can be made to the databases backed by the URL patterns specified.
    3. In Priority, enter the priority of this intercepted method in the interceptor chain. Interceptors with higher priorities are executed before interceptors with lower priorities.
  6. Click Next.
  7. On the Configure Connection URL Pattern page, specify the regular expression pattern for the connection URLs. You can either select a URL from the Available URLs menu or enter a URL in the URLs Pattern field. An example URL pattern is jdbc:derby://host:1527/(.*).
  8. Click Finish.
  9. In the Change Center, click Activate Changes.

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