Backing up and recovering the application serving environment
WAS ND v7.0 uses many operating system and application resources that you should consider adding to the backup and recovery procedures.
WAS resources can be saved while WAS environment is active. When backing up database data, you may have to shut down some or all services if a snapshot cannot be obtained. This would occur if there are requests which obtain locks or have open transactions against the database being saved. In a distributed environment, you may need to consider how to get a consistent backup across several systems. If the data on systems is not closely related to data on other systems, you may be able to backup each system in isolation. If we need a snapshot across systems simultaneously, you may need to stop activity on all systems while the snapshot is taken.
How often you back up resources depends largely on when or how often you expect them to change.
- Back up the product environment configuration. This category covers the resources that define the WAS operating environment. Once we have done initial setup, this information should change very infrequently. We might backup this information only when you change these settings, and not include these resources in regularly scheduled backups.
- Administrative configuration files
- HTTP configuration (see the documentation for the Web server)
- Back up the applications. This category covers the applications you run using WAS. You should back these up the same way you back up other applications on the system. You could backup these resources every time you add or change an application, or include these resources in a regularly scheduled backup.
- Back up the application data. This category covers the data stores used by the WAS applications. Unless the applications serve only static information, these resources are usually quite dynamic. You should back these up the same way you back up other business data on the system. These resources are suited for inclusion in a regularly scheduled backup.
Next steps
If the applications are using other resources or services that are external to WAS ND, remember to include those in the backup plan as well.
Related tasks
Restarting an appserver in recovery mode
Set transaction properties for peer recovery