V$SQL_BIND_METADATA

Columns
   ___________________________
 
   ADDRESS
   MAX_LENGTH
   ARRAY_LEN
   BIND_NAME
   POSITION
   DATATYPE

Related Views:

V$OPEN_CURSOR 
V$SQL 
V$SQLAREA 
V$SQLTEXT 
V$SQLTEXT_WITH_NEWLINES 
V$SQL_BIND_DATA 
V$SQL_CURSOR 
V$SQL_SHARED_MEMORY