Find Session access an object like Table or view in Oracle

V$ACCESS gives the SID of the session and the owner, object name, object type and Con_id if you are using Container database.

Check the object access by the session id

COLUMN object FORMAT A30
COLUMN type FORMAT A15
COLUMN sid FORMAT 9999
COLUMN username FORMAT A20
COLUMN osuser FORMAT A10
COLUMN program FORMAT A40
SELECT a.object,
a.type,
a.sid,
b.username,
b.osuser,
b.program
FROM v$access a,
v$session b
WHERE a.sid = b.sid
AND a.owner = UPPER('&ENTER_SCHEMA_NAME')
AND a.sid = &enter_session_id
ORDER BY a.object
/

Check the Session which accessing the object

COLUMN object FORMAT A30
COLUMN type FORMAT A15
COLUMN sid FORMAT 9999
COLUMN username FORMAT A20
COLUMN osuser FORMAT A10
COLUMN program FORMAT A40
SELECT a.object,
a.type,
a.sid,
b.username,
b.osuser,
b.program
FROM v$access a,
v$session b
WHERE a.sid = b.sid
AND a.owner = UPPER('&ENTER_SCHEMA_NAME')
AND a.object = upper('&OBJECT_NAME')
ORDER BY a.object
/