OL 9 must periodically flush audit records to disk to prevent the loss of audit records.

If option "freq" is not set to a value that requires audit records being written to disk after a threshold number is reached, then audit records may be lost.

Verify that OL 9 is configured to flush audit records to disk after every 100 records with the following command:

$ sudo grep freq /etc/audit/auditd.conf freq = 100

If "freq" isn't set to a value of "100" or greater, the value is missing, or the line is commented out, this is a finding.

Configure OL 9 to flush audit to disk by adding or updating the following configuration in "/etc/audit/auditd.conf":

freq = 100

The audit daemon must be restarted for the changes to take effect.

Restart auditd: $ sudo service auditd restart