大量行的MySQLdb错误的executemany [英] executemany for MySQLdb error for large number of rows

问题描述

我当前正在运行一个脚本，以使用execute many函数将值(元组列表)插入MySQL数据库.当我使用少量的行(`1000)时，脚本运行良好.

I'm currently running a script to insert values (a list of tuples) into a MySQL database, using the execute many function. When I use a small number of rows (`1000), the script runs fine.

当我使用大约40,000行时，出现以下错误:

When I use around 40,000 rows, I receive the following errors:

cursor.executemany( stmt, trans_frame)
Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\IPython\core\interactiveshell.py", line 2538, in run_code
    exec code_obj in self.user_global_ns, self.user_ns
  File "<ipython-input-1-66b44e71cf5a>", line 1, in <module>
    cursor.executemany( stmt, trans_frame)
  File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 253, in executemany
    r = self._query('\n'.join([query[:p], ',\n'.join(q), query[e:]]))
  File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 346, in _query
    rowcount = self._do_query(q)
  File "C:\Python27\lib\site-packages\MySQLdb\cursors.py", line 310, in _do_query
    db.query(q)
OperationalError: (2006, 'MySQL server has gone away')

有什么建议吗?

推荐答案

sql ='SET GLOBAL max_allowed_packet=500*1024*1024'
cursor.execute(sql)

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