Siebel Database Upgrade Guide > Implementing Siebel High-Availability Upgrade with Oracle GoldenGate to Upgrades to Siebel CRM Version 8.1.1.x >

Overview of Oracle GoldenGate Implementation

You use the standard Siebel upgrade process detailed in this guide to upgrade your Siebel database from one supported Siebel CRM version to another version. The duration of the upgrade process and the potential for having your live environment unavailable during the process depend on the database size and other factors. Performing a high-availability upgrade using Oracle GoldenGate enables you to keep your Siebel CRM production environment available to your customers during the upgrade process while also causing the least interruption to your business users because you do not have to shut down your Siebel environment during the upgrade. Figure 8 provides an overview of the Oracle GoldenGate architecture.

Figure 8. Siebel Upgrade Using Oracle GoldenGate

Figure 8 shows two servers with Oracle GoldenGate software installed on each of them. Each server has a database instance: one is the source system Siebel CRM version 7.8.2, and the other has the target system, Siebel CRM version 8.1.1. The directory structure and files reflect this environment.

For example, other upgrade situations might involve a single server hosting both databases (either in the same instance or in two different instances) with one instance of Oracle GoldenGate software. In this situation, the Oracle GoldenGate pump process and its parameter files are not required. The extract files created by the Oracle GoldenGate Extract process can be used by the Replicat process. In this case, the file prefix value in the replicat OBEY file (r782_811.oby) must be changed to the one used in the Extract process.

Related Topics

For more information on Oracle GoldenGate, see Oracle Technology Network (http://www.oracle.com/technetwork/indexes/documentation/index.html).