V$TYPE_SIZE definition in Oracle Database 11.2

V$TYPE_SIZE

select
  COMPONENT,                               -- COMPONENT VARCHAR2(8)
  TYPE,                                    -- TYPE VARCHAR2(8)
  DESCRIPTION,                             -- DESCRIPTION VARCHAR2(32)
  TYPE_SIZE                                -- TYPE_SIZE NUMBER
from
  GV$TYPE_SIZE
where
  inst_id = USERENV('Instance')

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