AUDIT_TRAIL

Property	Description
Parameter type	String
Syntax	`AUDIT_TRAIL = { db \| os \| none \| true \| false \| db_extended }`
Default value	`none`
Modifiable	No
Basic	No

AUDIT_TRAIL enables or disables database auditing.

Values:

none or false

Disables database auditing.
os

Enables database auditing and directs all audit records to the operating system's audit trail.
db or true

Enables database auditing and directs all audit records to the database audit trail (the SYS.AUD$ table).
db_extended

Enables database auditing and directs all audit records to the database audit trail (the SYS.AUD$ table). In addition, populates the SQLBIND and SQLTEXT CLOB columns of the SYS.AUD$ table.

You can use the SQL statement AUDIT to set auditing options regardless of the setting of this parameter.