Foxpro memo to Oracle Blob

I have a foxpro v9 memo field and i want to update that in oracle table blob field
Below sample code

--Open foxpro table
lcAlias = Sample.dbf
Use Sample.dbf

-- read memo field
lcBin = &lcAlias..blobdata

--convert to Blob
pcBin =  CAST(lcBin as Blob)

--Connect oracle
odb = sqlstringconnect("Driver={Oracle in OraClient11g_home1};Dbq=XXXXX;")
lcSQLString = "UPDATE oracletable SET m_blob = " + pcBin + " where id = 1;"
lresult=sqlexec(odb, lcSQLString, "Result")
IF lresult>0 THEN
   messagebox("yes")
ELSE
  *-- Collect error info
  AERROR(laErr)
  *-- Display error info on the screen
  DISPLAY MEMORY LIKE laErr
  *-- or save the error info into text file
  LIST MEMORY LIKE laErr TO FILE SQLError.txt
ENDIF
=SQLDisconnect(odb)

Am getting below error message - might be becoz i didnt pass the single quotes for pcBin
[Oracle][ODBC][Ora]ORA-00972: identifier is too long

If i put quotes for pcBin, foxpro prg hang at sqlexec
lcSQLString = "UPDATE oracletable SET m_blob = '"+ pcBin +"' where id = 1;"
lresult=sqlexec(odb, lcSQLString, "Result")

Tried below code, then also it freeze
lcBin = &lcAlias..blobdata
CURSORSETPROP("MapBinary",.T.,0)
lcSQLString = "UPDATE oracletable SET m_blob = '"+ lcBin +"' where id = 1;"
lresult=sqlexec(odb, lcSQLString, "Result")