V$TRANSACTION

Columns
   ___________________________
 
   ADDR
   SES_ADDR
   LOG_IO
   PHY_IO
   NOUNDO
   RECURSIVE
   XIDSQN
   XIDUSN
   XIDSLOT
   UBAFIL
   UBABLK
   UBASQN
   UBAREC
   STATUS
   START_UBABLK
   START_UBASQN
   START_UBAREC
   START_UBAFIL
   START_UEXT
   START_TIME
   START_SCNB
   START_SCNW
   PRV_XIDUSN
   PRV_XIDSQN
   PRV_XIDSLT
   FLAG
   SPACE
   PTX
   PTX_XIDUSN
   PTX_XIDSLT
   PTX_XIDSQN
   DSCN-B
   DSCN-W
   USED_UBLK
   USED_UREC
   CR_GET
   CR_CHANGE

Related Views:

V$GLOBAL_TRANSACTION 
V$SHARED_POOL_RESERVED 
V$SORT_SEGMENT 
V$SORT_USAGE 
V$STATNAME 
V$SYSSTAT 
V$SYSTEM_CURSOR_CACHE 
V$SYSTEM_EVENT