V$BH

Columns
   ___________________________
 
   DIRECT
   LOCK_ELEMENT_NAME
   TS#
   OBJD
   NEW
   STALE
   TEMP
   PING
   LOCK_ELEMENT_CLASS
   FILE#
   LOCK_ELEMENT_ADDR
   FORCED_WRITES
   FORCED_READS
   XNC
   STATUS
   CLASS#
   BLOCK#
   DIRTY

Related Views:

V$ACTIVE_INSTANCES 
V$BGPROCESS 
V$COMPATIBILITY 
V$COMPATSEG 
V$COPY_CORRUPTION 
V$DATABASE 
V$DATAFILE 
V$DATAFILE_COPY 
V$DATAFILE_HEADER 
V$DBFILE 
V$DBLINK 
V$DB_PIPES 
V$INSTANCE 
V$LICENSE 
V$OFFLINE_RANGE 
V$OPTION 
V$SGA 
V$SGASTAT 
V$TABLESPACE 
V$VERSION