Thanks so much for the reply! So, if I understand correctly, to swap the table like I described, I should do:
LOCK TABLES A write,A2 write; FLUSH TABLES; rename table A to A1; rename table A2 to A; UNLOCK TABLES; Right? If there is no write to either A or A2, then there is no need to lock the table, right? Thanks! On Mon, 09 Aug 2004 19:21:39 +0300, Egor Egorov <[EMAIL PROTECTED]> wrote: > Haitao Jiang <[EMAIL PROTECTED]> wrote: > > > Case 1: I have a table A under a running MySQL 4.1.3b server. If I > > replace A.MYD and A.MYI files without stop and start the server, will > > data gets corrupted? > > It depends on many factors. Honestly, there are lots of cases where you will > get correct data and nothing wrong will happen. But you have to be an > experience Unix developer to understand Unix internals in order to dance like > that. :) > > So the general answer is: don't, it's too dangerous. > > > Case 2: I rename A to A1, and A2 to A, assume A, A2 have the same > > schema but different data/index. Is it bad? Will data gets corrupted? > > I tied this one, it seems ok. > > Yes, you're right, it just *SEEMS* ok. :) > > If you really need to replace table files, use FLUSH TABLES, LOCK TABLES: > > http://dev.mysql.com/doc/mysql/en/FLUSH.html > http://dev.mysql.com/doc/mysql/en/LOCK_TABLES.html > > -- > For technical support contracts, goto https://order.mysql.com/?ref=ensita > This email is sponsored by Ensita.net http://www.ensita.net/ > __ ___ ___ ____ __ > / |/ /_ __/ __/ __ \/ / Egor Egorov > / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] > /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.net > <___/ www.mysql.com > > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] > > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
