| Oracle® Database Reference 10g Release 2 (10.2) Part Number B14237-03  | 
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DBA_AUDIT_SESSION displays all audit trail records concerning CONNECT and DISCONNECT.
Related View
USER_AUDIT_SESSION contains audit trail records concerning connections and disconnections of the current user.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
OS_USERNAME | 
VARCHAR2(255) | 
Operating system login username of the user whose actions were audited | |
USERNAME | 
VARCHAR2(30) | 
Name (not ID number) of the user whose actions were audited | |
USERHOST | 
VARCHAR2(128) | 
Client host machine name | |
TERMINAL | 
VARCHAR2(255) | 
Identifier of the user's terminal | |
TIMESTAMP | 
DATE | 
Date and time of the creation of the audit trail entry (date and time of user login for entries created by AUDIT SESSION) in the local database session time zone | 
|
ACTION_NAME | 
VARCHAR2(28) | 
Name of the action type corresponding to the numeric code in the ACTION column in DBA_AUDIT_TRAIL | 
|
LOGOFF_TIME | 
DATE | 
Date and time of user log off | |
LOGOFF_LREAD | 
NUMBER | 
Logical reads for the session | |
LOGOFF_PREAD | 
NUMBER | 
Physical reads for the session | |
LOGOFF_LWRITE | 
NUMBER | 
Logical writes for the session | |
LOGOFF_DLOCK | 
VARCHAR2(40) | 
Deadlocks detected during the session | |
SESSIONID | 
NUMBER | 
NOT NULL | 
Numeric ID for each Oracle session | 
RETURNCODE | 
NUMBER | 
NOT NULL | 
Oracle error code generated by the action. Some useful values:
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CLIENT_ID | 
VARCHAR2(64) | 
Client identifier in each Oracle session | |
SESSION_CPU | 
NUMBER | 
Amount of CPU time used by each Oracle session | |
EXTENDED_TIMESTAMP | 
TIMESTAMP(6) WITH TIME ZONE | 
Timestamp of the creation of the audit trail entry (timestamp of user login for entries created by AUDIT SESSION) in UTC (Coordinated Universal Time) time zone | 
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PROXY_SESSIONID | 
NUMBER | 
Proxy session serial number, if an enterprise user has logged in through the proxy mechanism | |
GLOBAL_UID | 
VARCHAR2(32) | 
Global user identifier for the user, if the user has logged in as an enterprise user | |
INSTANCE_NUMBER | 
NUMBER | 
Instance number as specified by the INSTANCE_NUMBER initialization parameter | 
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OS_PROCESS | 
VARCHAR2(16) | 
Operating System process identifier of the Oracle process |