MySQLdb executemany

[Daniel Bowett]

Daniel Bowett wrote:
> I seem to have found a bug/limitation of executemany in MySQLdb.
> 
> I am inserting 3100 records into a database. It works fine and adds them 
> in about 1 second.
> 
> I went back to the program today and realised i'd missed a field so 
> added it to the insert statement. This seems to break it if I try to add 
> all the records in one go. Through trial and error I have realised the 
> limit is 2786 records in one go. Any more than that I get two different 
> errors on the executemany statement:
> 
> "MySQL server has gone away" - This occurs if I try to add all 3100 
> records in one go.
> 
> "Lost Connection to MySQL server during query" - This happens if I am 
> near the 2786 threshold.
> 
> Is there a known limit with this function???
> 

UPDATE
------

The maximum packet size in mysql by default is 1MB. Hence why I was 
hitting ths problem.

http://dev.mysql.com/doc/mysql/en/packet-too-large.html