Cursor environment mismatch V$SQL_SHARED_CURSOR

SELECT
SS1.SQL_TEXT,
SS1.SQL_ID,
SS1.CHILD_NUMBER,
SS2.CHILD_NUMBER,
SS1.SQLTYPE,
SS2.SQLTYPE,
SS1.PARSING_SCHEMA_NAME,
SS2.PARSING_SCHEMA_NAME
FROM
V$SQL SS1,
V$SQL SS2
WHERE
SS1.SQL_ID=SS2.SQL_ID
AND SS1.SQLTYPE < SS2.SQLTYPE
ORDER BY
SS1.SQL_TEXT,
SS1.CHILD_NUMBER,
SS2.CHILD_NUMBER;

SELECT
SSC.*
FROM
V$SQL S,
V$SQL_SHARED_CURSOR SSC
WHERE
S.SQL_ID=’xxxxxxxxxxxxx’
AND S.SQL_ID=SSC.SQL_ID
AND S.CHILD_ADDRESS=SSC.CHILD_ADDRESS
ORDER BY
SSC.CHILD_NUMBER;

SELECT
  S.CHILD_NUMBER,
  SBM.POSITION,
  SBM.DATATYPE,
  SBM.MAX_LENGTH,
  SBM.BIND_NAME
FROM
  V$SQL S,
  V$SQL_BIND_METADATA SBM
WHERE
  S.SQL_ID='xxxxxx'
  AND S.CHILD_ADDRESS=SBM.ADDRESS
ORDER BY
  S.CHILD_NUMBER,
  SBM.POSITION;

source : https://hoopercharles.wordpress.com/2010/07/23/sql_type_mismatch-in-vsql_shared_cursor/