Sun Java System Application Server Enterprise Edition 8.1 2005Q2 High Availability Administration Guide

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## To add nodes by recreating the database

This procedure enables you to maintain HADB availability throughout the process.

1. For each Application Server instance:

   1. Disable the Application Server instance in the load balancer.

   2. Disable session persistence.

   3. Restart the Application Server instance.

   4. Re-enable the Application Server instance in the load balancer.

   If you do not need to maintain availability, you can disable and re-enable all the server instances at once in the load balancer. This saves time and prevents failover of outdated session data.

2. Stop the database as described in Stopping a Database .

3. Delete the database as described in Removing a Database .

4. Recreate the database with the additional nodes as described in Creating a Database

5. Reconfigure the JDBC connection pool as described in Configuring the JDBC Connection Pool

6. Reload the session persistence store.

7. For each Application Server instance:

   1. Disable the Application Server instance in the load balancer.

   2. Enable session persistence.

   3. Restart the Application Server instance.

   4. Re-enable the Application Server instance in the load balancer.

   If you do not need to maintain availability, you can disable and re-enable all the server instances at once in the load balancer. This saves time and prevents failover of outdated session data.

- Previous: Refragmenting the Database
- Next: Monitoring HADB

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