ORA-01460: unimplemented or unreasonable conversion requested blob insert - c++

Question

I am trying to insert an blob into a database .
For this I am using c++ and microsoft ODBC driver .
The app works fine with files that have less than 4000 bits .
When i am trying to insert a file that has more than 4000 bytes , meaning 3,9 KB it returns : ORA-01460: unimplemented or unreasonable conversion requested .
The database is oracle 11.2.0 .
I have searched the internat for a solution but find none .
How could i solve this problem ?
What can i do ?
The code for my insert function is :
try{
CString strSqlStat(szSqlStat);
if(IsConnectionDead())
{
if(!Reconnect())
return ERR_RECONNECT_FAILED;
}
CFileException exFile;
CFile sourceFile;
if(!sourceFile.Open(szFilePath, CFile::modeRead | CFile::shareDenyNone, &exFile))
return ERR_BLOB_READFILE;
int nrBytesToRead = (int)sourceFile.GetLength();
char* pData = new char[nrBytesToRead+1];
DWORD nrBytesRead;
if(!ReadFile((HANDLE)sourceFile.m_hFile,pData,nrBytesToRead, &nrBytesRead, NULL))
{
delete pData;
return ERR_BLOB_READFILE;
}
sourceFile.Close();
if(nrBytesRead == 0)//file empty
{
delete pData;
return 0;
}
//variables
SQLRETURN retCode;
SDWORD cbTextSize, lbytes;
lbytes = (SDWORD)nrBytesRead;
cbTextSize = SQL_LEN_DATA_AT_EXEC(lbytes);
PTR pParmID;
SDWORD cbBatch = nrBytesRead;
int rgbValue = 1;
// Bind the parameter marker.
retCode = retcode = SQLBindParameter(hstmt, // hstmt
1, // ipar
SQL_PARAM_INPUT, // fParamType
SQL_C_BINARY, // fCType
SQL_LONGVARBINARY, // FSqlType
lbytes, // cbColDef
0, // ibScale
&rgbValue, // rgbValue
0, // cbValueMax
&cbTextSize); // pcbValue
SqlError(hstmt,SQL_HANDLE_STMT,_T("WriteBlob"), _T("CTLSqlConnection"), _T("SQLBindParameter"));
if(retCode != SQL_SUCCESS)
{
delete pData;
if(!EndTransaction(FALSE))
return ERR_ENDTRANSACTION_FAILED;
else
return -3;
}
//SQLExec
retcode = retCode = SQLExecDirect(hstmt,(SQLTCHAR*)szSqlStat, SQL_NTS);
retcode = retCode = SQLParamData(hstmt, &pParmID);
SQLRETURN ret; //ADI fix all warnings - including this var that is unreferenced - delete it if you don't use it
SQLCHAR* SQLState; //ADI same here
SQLINTEGER NativeError;
SQLSMALLINT errmsglen;
SQLWCHAR errmsg[255];
SQLWCHAR errstate[50];
SQLGetDiagRec(SQL_HANDLE_STMT, hstmt, 1, (SQLWCHAR*)errstate, &NativeError, (SQLWCHAR*)errmsg, sizeof(errmsg), &errmsglen);
if(retCode == SQL_NEED_DATA)
{
// Put final batch.
SQLPutData(hstmt, pData, lbytes);
}
else
{
delete pData;
SqlError(hstmt,SQL_HANDLE_STMT,_T("WriteBlob"), _T("CTLSqlConnection"), _T("SQLExecDirect or SQLParamData"));
if(!EndTransaction(FALSE))
return ERR_ENDTRANSACTION_FAILED;
else
return -4;
}
delete pData;
// Make final SQLParamData call.
retcode = retCode = SQLParamData(hstmt, &pParmID);
/*SQLRETURN ret; //ADI fix all warnings - including this var that is unreferenced - delete it if you don't use it
SQLCHAR* SQLState; //ADI same here
SQLINTEGER NativeError;
SQLSMALLINT errmsglen;
SQLWCHAR errmsg[255];
SQLWCHAR errstate[50];
*/
SQLGetDiagRec(SQL_HANDLE_STMT, hstmt, 1, (SQLWCHAR*)errstate, &NativeError, (SQLWCHAR*)errmsg, sizeof(errmsg), &errmsglen);
if(SqlError(hstmt,SQL_HANDLE_STMT,_T("WriteBlob"), _T("CTLSqlConnection"), _T("The last SQLParamData")))
if(!EndTransaction(FALSE))
return ERR_ENDTRANSACTION_FAILED;
else
return -5;
retcode = SQLCloseCursor(hstmt);
if(!EndTransaction(TRUE))
return ERR_ENDTRANSACTION_FAILED;
}catch(...){
WRITEERRORINLOGFILE(_T("Error: An exception has been caught in WriteBlob."));
return -10;
}
return 0;
}
Waitin for your answers .
Thanks .