Each audit store uses Microsoft SQL Server to provide database services to the audit installation. When you install the first audit store, you configure the database instance you want to use and that database becomes the active database for storing incoming audit data. A single audit store, however, can have several databases attached to it. Attached databases store historical information and respond to queries from the management database. You can use the Audit Manager console to control the databases that are attached to the audit store and to designate which database is active. Only one database can be active in an audit store at any given time.
Although the audit store can use multiple databases, the presentation of session data is not affected. If a session spans two or more databases that are attached to the audit store, the Audit Analyzer console presents the data as a single, unbroken session. For example, if you change the active database during a session, some of the session data is stored in the attached database that is no longer active and some of it stored in the newly activated database, but the session data plays back as a single session to the auditor.