Documention on Oracle Auditing Capabilities

Question

I am trying to find extensive documentation to explain all Oracle auditing features.
I need to understand where things are audited and be able to query/find things and
store these audit trails for up to a year.
I am looking at V$session and V$AUD and V_$OPEN_CURSOR but do not have
documentation to define all of this. Where is the best source? Any source?
Auditing of general database actions and each successful or unsuccessful attempt:
- Password changed when/what/who
- Grants when/to whom/by whom/what
- Create/Drop/Alter Users/Objects
- Databsae Startup/shutdown when/who
- Terminal ID/Host IP of incoming users
- Database System alters
In other words, (Actions to database, users, etc other than application
Data updates.
Thanks
Kim

Answer 1

Thanks. I actually found it even though it basically logs it an an UNKOWN
command and no username in Oracle since I used sqlplus '/as sysdba'
SELECT substr(command,1,10) COMMAND, substr(ACTION,1,10) ACTION,
substr(OSUSER,1,10) OSUSER,
substr(machine,1,10) MACHINE, server, Process,
to_char(logon_time,'DD-MON-YYYY hh24:mi:ss'), PDDL_Status
FROM V$SESSION
WHERE username is null
ORDER BY logon_time;
I have been slowly finding things. I know thousands of people before me have done
this. I hate to reinvent the wheel everytime I need to find something.
Thanks
Kim