Examine Archived Data

Suppose that you need to examine the archived database as of time t0.

  1. Copy the archived read-only db.db0 to a read-write file db.db0.working.
  2. Start db.db0.working. Note that as long as the server name db.db0.working does not conflict with the production system db.db, there is no need to stop the production system. db.db0.working will open A, B, C, and D in read-only mode. This will not interfere with db.db's use of these files on UNIX, although Windows returns a sharing violation.

    Note that the catalog file db.db0.working is open in read-write mode.

  3. Create a user inv for an investigator who wishes to examine the archived database.
  4. Grant inv RESOURCE permission to create views, stored procedures, global or local temporary tables or any other structures necessary for the investigation.

    db.db0 as well as A,B and C remain unchanged.