Hanging odbc connections

Seems that the tclproc we have to query an odbc database doesn’t always release or end the process creating numerous non-current but ‘active’ odbc theads.  The tclproc has the final line as:

 # free ODBC handles

     set err [odbc SQLFreeHandle SQL_HANDLE_STMT $hstmt]

     set err [odbc SQLDisconnect $hDBConnection]

     set err [odbc SQLFreeHandle SQL_HANDLE_DBC $hDBConnection]

     set err [odbc SQLFreeHandle SQL_HANDLE_ENV $henv]

  # Return

    return “”

Is there something else I need to include to ensure the process releases or frees the database?

Thanks.

Mike Campbell