Why I have the problem about "terminateConnection()"

Question

When I want to destruct my class, there is an error occured for "Segmentation fault". My code is following:
COMSDatabase::COMSDatabase(string strUser,string strPassword,string strSID)
     m_pEnv = Environment::createEnvironment (Environment::DEFAULT);
     m_pConn = m_pEnv->createConnection (strUser,strPassword,strSID);
     m_pConn->setStmtCacheSize(10);                         //10 is the num of Statement in the cache.          
COMSDatabase::~COMSDatabase()
     m_pEnv->terminateConnection(m_pConn); //!!!!Error!!! Why????                    
Environment::terminateEnvironment(m_pEnv);
void COMSDatabase::GetJobRequest(char *&pszRequestID, char *&pszJobID, char &cRequestCommand, int &nProcessLevel)
     string sqlStmt = "SELECT REQUESTID,JOBID,REQUESTCOMMAND,PROCESS_LEVEL FROM OMSREQUEST ORDER BY PROCESS_LEVEL DESC, REQUESTCOMMAND ASC";
m_pStmt = m_pConn->createStatement(sqlStmt,"queryOMSRequest");     //using Statement Caching
ResultSet *pRset = m_pStmt->executeQuery ();        
ResultSet::Status status = pRset->status();
if (0!=status)
     try{
          if (pRset->next ())
               string strRequestID = pRset->getString(1);     
               const char *pszRequestIDTemp = strRequestID.c_str();                     
               sprintf(pszRequestID,"%s",pszRequestIDTemp);
               string strJobID = pRset->getString(2);
               const char *pszJobIDTemp = strJobID.c_str();
               sprintf(pszJobID,"%s",pszJobIDTemp);
     string strRequestCommandTemp = pRset->getString(3);
     const char *pszRequestCommandTemp = strRequestCommandTemp.c_str();
     cRequestCommand = pszRequestCommandTemp[0];
     nProcessLevel = pRset->getInt(4);     
          else
               m_nErrorCode=1;
               m_strErrMsg="No Job Request Command available now!" ;
     }catch(SQLException ex)
          m_nErrorCode=ex.getErrorCode();
          m_strErrMsg=ex.getMessage();
          m_pStmt->closeResultSet (pRset);
          return ;
     catch (exception &ex)
               m_nErrorCode=-1;
          m_strErrMsg=ex.what();
          m_pStmt->closeResultSet (pRset);
          return ;
m_pStmt->closeResultSet (pRset);
     m_pConn->terminateStatement (m_pStmt,"queryOMSRequest");
return ;
}

Answer 1

I got it!