Bug #40473 SET GLOBAL read_only=0|1 performs an unnecessary FLUSH TABLES WITH READ LOCK
Submitted: 2 Nov 2008 10:50 Modified: 12 Jul 2012 14:48
Reporter: Pascal Hofmann Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Server: Locking Severity:S3 (Non-critical)
Version:5.1.29, 5.1, 6.0 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: