Bug #20038 ALTER TABLE copies original data even when exclusive lock is issued
Submitted: 24 May 2006 9:34 Modified: 27 Sep 2008 11:09
Reporter: Francisco Reinaldo Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: DDL Severity:S2 (Serious)
Version:4.0.22 OS:Any (All)
Assigned to: CPU Architecture:Any

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file: