WebSphere brand IBM WebSphere Telecom Web Services Server, Version 7.1

Migrating data in a distributed database configuration

The First Steps script takes care of setting up database tables for Telecom Web Services Server (TWSS) when you are using a consolidated or shared database. However, additional steps may be required when you are using a distributed database configuration.

Before you begin
This procedure is a sub-procedure within the overall migration process of your test (non-production) or production system. Make sure that you have already installed TWSS version 7.1 components and that you have performed the procedures described in one of the following post-installation configuration topics:
  • Creating and configuring the DB2 database server instance
  • Creating and configuring the Oracle database server instance

Note that the First Steps script assumes that all nodes in the cluster are at a TWSS version 7.1 level.

About this task
If a distributed or partitioned topology is used for databases, you will encounter one of the following scenarios:

To migrate a distributed database configuration when there is more than one database per cluster, perform the following steps.

  1. On one of the nodes in the cluster, create a temporary database by running the First Steps script with the Initial Configuration Mode option pointing to a new temporary database. For detailed information, see the topic Running the First Steps configuration script. The First Steps script creates the minimum necessary data sources to support a distributed topology and points to the new single (temporary) database instance.
  2. Create additional data sources, as necessary, and update the necessary JNDI bindings to the respective data sources.
  3. Drop the temporary database.
  4. Verify the new migrated environment by running any successful service logic test case. Verify databases and logs.
    Note: Migration of runtime data is generally not supported, except in the cases of some Direct Connect-based Web service implementations. (For details, refer to the topic Planning to migrate from the previous version of Telecom Web Services Server.) In these cases, be sure that you have copied all of the existing data to the new database before deleting the old database and database tables.
  5. Verify that the newly populated data coexists with the previous data in cases where migration of runtime data is supported for a given Web service or feature.
    Note: When the First Steps script sets up your configuration for running TWSS version 7.1, it does not modify your existing configuration. Therefore, if you made changes to the default configuration for a previous version of TWSS, your changes are preserved during the migration process.



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