Bug #57612 SET GLOBAL READ_ONLY=1 cannot progress when a table is locked with LOCK TABLES
Submitted: 20 Oct 2010 22:58 Modified: 6 Mar 2012 1:27
Reporter: Sasha Pachev Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Locking Severity:S2 (Serious)
Version:5.1.49, 5.5.7-bzr OS:Any
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: