Skip navigation links

MySQL Forums :: Performance :: Hanging on copying to tmp table


Advanced Search

Re: Hanging on copying to tmp table
Posted by: Seweryn Ożóg ()
Date: April 26, 2012 03:28PM

mysql engine typically uses memory for temporary tables, but column `bug` id `text` type so mysql use myisam on disk.


Check this:
- http://dev.mysql.com/doc/refman/5.1/en/memory-storage-engine.html

"MEMORY tables cannot contain BLOB or TEXT columns" -


- http://dev.mysql.com/doc/refman/5.5/en/server-system-variables.html#sysvar_max_heap_table_size

- http://dev.mysql.com/doc/refman/5.5/en/server-system-variables.html#sysvar_tmp_table_size

re-mount mysql tmpdir to tmpfs in RAM :-)

Options: ReplyQuote


Subject Views Written By Posted
Hanging on copying to tmp table 4664 Brian Dalby 04/23/2012 06:55AM
Re: Hanging on copying to tmp table 2450 Rick James 04/24/2012 10:16AM
Re: Hanging on copying to tmp table 1841 Brian Dalby 04/24/2012 02:44PM
Re: Hanging on copying to tmp table 1622 Brian Dalby 04/25/2012 01:08PM
Re: Hanging on copying to tmp table 1609 Rick James 04/25/2012 08:43PM
Re: Hanging on copying to tmp table 1557 Brian Dalby 04/26/2012 12:35AM
Re: Hanging on copying to tmp table 1790 Brian Dalby 04/26/2012 02:17AM
Re: Hanging on copying to tmp table 1553 Seweryn Ożóg 04/26/2012 03:28PM
Re: Hanging on copying to tmp table 1210 Brian Dalby 04/27/2012 07:02AM
Re: Hanging on copying to tmp table 1483 Rick James 04/28/2012 01:37PM
Re: Hanging on copying to tmp table 1478 Brian Dalby 04/28/2012 02:00PM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.