Information
For completeness of forensic analysis, it is necessary to track failed attempts to log on to the DBMS. While positive identification may not be possible in a case of failed authentication, as much information as possible about the incident must be captured.
Solution
Run the following command to define an audit policy with the needed subset using the CREATE AUDIT POLICY SQL statement:
DB2> CREATE AUDIT POLICY <DB audit policy name>
CATEGORIES VALIDATE STATUS BOTH, CONTEXT STATUS BOTH
ERROR TYPE AUDIT
To modify an existing audit policy, replace 'CREATE' with 'ALTER' in the preceding statement. Only the categories explicitly named in the statement will be affected. In this case, the changes take effect immediately.
If CREATE was used above, run the following command to apply the policy created above to the database:
DB2> AUDIT DATABASE USING POLICY <DB audit policy name>