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select username from v$session

select username from v$session

V$SESSION

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V$SESSION


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SQL code:

SQL>SET SHOW ON;
SQL>SHOW USER;



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select username from v$session


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select distinct username from v$session

select distinct username from v$session where username <>'';

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sql>SQL code:
select username from v$session


SQL> conn cx/cx
Connected.
SQL> l
  1* select username from v$session where status='ACTIVE'
SQL> /

USERNAME
------------------------------


CX


USERNAME
------------------------------
SYS


USERNAME
------------------------------


30 rows selected.

SQL>

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