Accounts unused for X days

Here's a script that shows accounts and number of days since last use. It assumes session auditing is enabled.

-- File: audit_unused_accounts.sql
-- Description: Check for open accounts that haven't been used in X days.
-- Parameters: 1 - Number of days of inactivity for which to check (input).

column status format a16

SELECT RPAD(da.username, 12) "Username", 
       TRUNC(SYSDATE - MAX(da.timestamp)) "Days Inactive",
       LPAD(du.account_status, 16) "Status",
       LPAD(TO_CHAR(MAX(da.timestamp), 'DD-MON-YYYY'), 16) "Last Login"

FROM dba_users du, dba_audit_session da  WHERE da.action_name LIKE 'LOG%'

--  AND da.username NOT IN ('SYS','SYSTEM')  -- itemize accounts to exclude
--  AND du.profile != ''       -- or profiles to exclude
    AND du.username = da.username
--  AND du.account_status = 'OPEN'        -- could look at just OPEN if desired

GROUP BY da.username, du.account_status

HAVING MAX(da.timestamp) <= SYSDATE - &1 ORDER BY 2,1 DESC

For example, to show accounts which haven't been used for at least 30 days:

SQL> @audit_unused_accounts 30

It produces results like this:

Username         Days Inactive Status           Last Login
---------------- ------------- ---------------- ----------------
ALPHA                       34             OPEN      17-MAY-2006

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89 OPEN 23-MAR-2006 GAMMA 97 OPEN 15-MAR-2006 DELTA 118 OPEN 22-FEB-2006 EPSILON 118 EXPIRED(GRACE) 22-FEB-2006 PHI 126 OPEN 15-FEB-2006 ETA 134 OPEN 07-FEB-2006

This was first published in June 2006

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