def executemany(self, query, params=None):
        # cx_Oracle doesn't support iterators, convert them to lists
        if params is not None and not isinstance(params, (list, tuple)):
            params = list(params)
        try:
            args = [(':arg%d' % i) for i in range(len(params[0]))]
        except (__HOLE__, TypeError):
            # No params given, nothing to do
            return None
        # cx_Oracle wants no trailing ';' for SQL statements.  For PL/SQL, it
        # it does want a trailing ';' but not a trailing '/'.  However, these
        # characters must be included in the original query in case the query
        # is being passed to SQL*Plus.
        if query.endswith(';') or query.endswith('/'):
            query = query[:-1]
        query = convert_unicode(query % tuple(args), self.charset)
        formatted = [self._format_params(i) for i in params]
        self._guess_input_sizes(formatted)
        try:
            return self.cursor.executemany(query,
                                [self._param_generator(p) for p in formatted])
        except Database.IntegrityError as e:
            six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
        except Database.DatabaseError as e:
            # cx_Oracle <= 4.4.0 wrongly raises a DatabaseError for ORA-01400.
            if hasattr(e.args[0], 'code') and e.args[0].code == 1400 and not isinstance(e, IntegrityError):
                six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
            six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2])
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/db/backends/oracle/base.py/FormatStylePlaceholderCursor.executemany