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
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