Sql to check transction details

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 Sql to check transction details:

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select s.sid

      ,s.serial#

      ,s.username

      ,s.machine

      ,s.status

      ,s.lockwait

      ,t.used_ublk

      ,t.used_urec

      ,t.start_time

from v$transaction t

inner join v$session s on t.addr = s.taddr;

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