V$ROWCACHE_PARENT definition in Oracle Database 11.2
V$ROWCACHE_PARENT

select
  indx,                                    -- INDX NUMBER
  hash,                                    -- HASH NUMBER
  address,                                 -- ADDRESS RAW(8)
  cache#,                                  -- CACHE# NUMBER
  cache_name,                              -- CACHE_NAME VARCHAR2(64)
  existent,                                -- EXISTENT VARCHAR2(1)
  lock_mode,                               -- LOCK_MODE NUMBER
  lock_request,                            -- LOCK_REQUEST NUMBER
  txn,                                     -- TXN RAW(8)
  saddr,                                   -- SADDR RAW(8)
  inst_lock_request,                       -- INST_LOCK_REQUEST NUMBER
  inst_lock_release,                       -- INST_LOCK_RELEASE NUMBER
  inst_lock_type,                          -- INST_LOCK_TYPE VARCHAR2(2)
  inst_lock_id1,                           -- INST_LOCK_ID1 RAW(4)
  inst_lock_id2,                           -- INST_LOCK_ID2 RAW(4)
  key                                      -- KEY RAW(100)
from
  gv$rowcache_parent
where
  inst_id = USERENV('Instance')

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