noaudit behaviour

Hello,

I'm working on a 11.2.0.4 database and I enabled the following audit activity on my database:

AUDIT SYSTEM AUDIT BY ACCESS;

AUDIT ALTER DATABASE BY ACCESS;

AUDIT DATABASE LINK BY ACCESS;

AUDIT DIMENSION BY ACCESS;

AUDIT DIRECTORY BY ACCESS;

AUDIT GRANT DIRECTORY BY ACCESS;

AUDIT SYSTEM GRANT BY ACCESS;

AUDIT LOCK TABLE BY ACCESS;

AUDIT PROFILE BY ACCESS;

AUDIT PUBLIC DATABASE LINK BY ACCESS;

AUDIT ROLE BY ACCESS;

AUDIT ROLLBACK SEGMENT BY ACCESS;

AUDIT ALTER SESSION BY ACCESS;

AUDIT ALTER SYSTEM BY ACCESS;

AUDIT TABLESPACE BY ACCESS;

AUDIT USER BY ACCESS;

AUDIT SESSION;

AUDIT NOT EXISTS;

AUDIT NETWORK BY ACCESS;