How can i get the failed row numbers in batch insertion?

Question

Afeter execution of batch insert operation into a table, i use OCIAttrGet() to get the error number of insertion, as expected, it returns the correct number. however, when i use OCIParamGet() to get an error handle and then to get the exact failed row numbers , OCIParamGet() returns -2 , means "INVALID_HANDLE". can anyboy tell me why ? how can i get the exact failed rows?
the snapshot of my code :
int errNum = 0;
int nRet = 0;
nRet = OCIAttrGet((dvoid *)m_pIIOdbc->m_pStmtAll,OCI_HTYPE_STMT,&errNum,
          0,OCI_ATTR_NUM_DML_ERRORS, m_pIIOdbc->m_pErrHandle);
if (errNum)
     OCIError* pErrHndl;
     int* pRow_off = new int[errNum];
     for (int i = 0; i < errNum; i++)
     nRet = OCIParamGet(m_pIIOdbc->m_pErrHandle,
OCI_HTYPE_ERROR, m_pIIOdbc->m_pErrHandle, &pErrHndl, i + 1);
     nRet = OCIAttrGet (pErrHndl, OCI_HTYPE_ERROR, &pRow_off, 0,
     OCI_ATTR_DML_ROW_OFFSET, m_pIIOdbc->m_pErrHandle);
          delete []pRow_off;

Answer 1

now the code is :
OCIEnv      *m_pEnvHandle;                    
OCIError      *m_pErrHandle;                         
OCIError     *m_pErrHandle2;                    
OCIServer *m_pSrvHandle;                         
OCISvcCtx *m_pSvcHandle;                         
OCIStmt *m_pStmtExec;
OCIStmt *m_pStmtAll;
OCIError** m_pErrorHndl;     
int* m_pRowOff; //the array that will contain the failed row numbers
int     m_nArrayLength; //length of array in once batch operation
int m_nErrNum; //error number
int m_nSucCount; //successful record number
//initialization
//m_nArrayLength is a parameter passed in, so i can not tell the exact length of the array, dynamic space allocation is needed
m_pErrorHndl = new OCIError*[m_nArrayLength];
m_pRowOff = new int[m_nArrayLength];
//execution
OCIStmtExecute(
          m_pSvcHandle,
          m_pStmtAll,
          m_pErrHandle,
          (ub4)m_nArrayLength,
          (ub4)0, (OCISnapshot *)NULL, (OCISnapshot *)NULL,
          OCI_BATCH_ERRORS
//get successful records number
m_nSucCount = 0;
OCIAttrGet((dvoid *)m_pStmtAll,OCI_HTYPE_STMT,&m_nSucCount,
          0,OCI_ATTR_ROW_COUNT, m_pErrHandle);
//get error numbers
m_nErrNum = 0;
OCIAttrGet((dvoid *)m_pStmtAll,OCI_HTYPE_STMT,&m_nErrNum,
          0,OCI_ATTR_NUM_DML_ERRORS, m_pErrHandle2);
//get failed row numbers into the array
if (m_nErrNum)
          //get failed row numbers into the array
          for (int i = 0; i < m_nErrNum; i++)
               //initiallize error handles               OCIHandleAlloc((dvoid*)m_pEnvHandle, (dvoid**)&m_pErrorHndl,
                    OCI_HTYPE_ERROR, (size_t)0, (dvoid**)0);
               OCIParamGet(m_pErrHandle, OCI_HTYPE_ERROR, m_pErrHandle2, (void**)&m_pErrorHndl[i], i);
               OCIAttrGet (m_pErrorHndl[i], OCI_HTYPE_ERROR, &m_pRowOff[i], 0,
                                        OCI_ATTR_DML_ROW_OFFSET, m_pErrHandle2);
now, if batch insert is executed, eg, there are 10 records to be inserted, thus m_nArrayLength is set to be 10. There are 5 records of the 10 have exist in database, so some of insert operations will fail. After execution, m_nErrNum is 5, and i can get the failed row numbers.Everything seems go well.
However, if batch updata is excuted, eg, 10 records to be updated, m_nArrayLength is set to be 10, and also there are 5 records of the 10 have exist in database. After execution, the OCIStmtExecute() returns 1, m_nErrNum got by
OCIAttrGet((dvoid *)m_pStmtAll,OCI_HTYPE_STMT,&m_nErrNum,
          0,OCI_ATTR_NUM_DML_ERRORS, m_pErrHandle2)
is 0, and m_nSucNum is 5. Why?? how can I get the rows that fail? i have to know which rows do not exist in database??