Bug #48607 READ UNCOMMITTED uses more locks than READ COMMITTED in InnoDB 5.1+
Submitted: 6 Nov 2009 19:15 Modified: 20 Jun 2010 1:05
Reporter: Harrison Fisk Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: InnoDB storage engine Severity:S3 (Non-critical)
Version:5.1+ OS:Any
Assigned to: Marko Mäkelä CPU Architecture:Any
Tags: innodb_locks_unsafe_for_binlogs, read committed, read uncommited

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: