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Administrator's Guide


Chapter 16. Managing the Database and Recovery Log

The Tivoli Storage Manager database contains information that is needed for server operations and information about client data that has been backed up, archived, and space-managed. The database does not store client data. Instead, the database points to the locations of the client files in the storage pools.

The database includes information about:

Note:
If the database is unusable, the entire Tivoli Storage Manager server is unavailable. If a database is lost and cannot be recovered, the backup, archive, and space-managed data for that server is lost. See Chapter 20, Protecting and Recovering Your Server for steps that you can take to protect your database.

The recovery log contains information about database updates that have not yet been committed. Updates can include activities such as defining a management class, backing up a client file, and registering a client node. Changes to the database are recorded in the recovery log to maintain a consistent database image.

The following shows authority requirements for tasks in this chapter:

Task Required Privilege Class
Manage disk volumes used by the database and recovery log System or unrestricted storage
Display information about the database and recovery log Any administrator

See the following sections:

Concepts:
How Tivoli Storage Manager Processes Transactions
How Tivoli Storage Manager Manages Space

Tasks:
Estimating and Monitoring Database and Recovery Log Space Requirements
Increasing the Size of the Database or Recovery Log
Decreasing the Size of the Database or Recovery Log
Optimizing Database and Recovery Log Performance
Note:
Mirroring of the database and recovery log is described in the chapter on data protection. See Mirroring the Database and Recovery Log.

In this chapter, most examples illustrate how to perform tasks by using a Tivoli Storage Manager command-line interface. For information about the commands, see Administrator's Reference, or issue the HELP command from the command line of a Tivoli Storage Manager administrative client.

Tivoli Storage Manager tasks can also be performed from the administrative Web interface. For more information about using the administrative interface, see Quick Start.


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