RE: MYSQL DATABASE BACKUP
Yes. Setup replication and peform the backup on the slave. Provided this is your only purpose for having a slave, and there are no queries running on the slave, the specs can be a lot lower than your master/production machine. -Original Message- From: Kathy Reyes [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 19, 2002 1:37 PM To: mysql Subject: MYSQL DATABASE BACKUP I am trying to backup a table in mysql without locking my tables it this posible - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Hot Backups
First of all, I'd like to point to the documentation =] http://www.mysql.com/doc/B/a/Backup.html The other option not mentioned there but that another list member suggested is the best way to backup a live database. The above two methods work, but with larger databases, having the tables locked for more than a few seconds while you back them up can cause timeouts. Having a second machine with replication lets you back up the database without this concern, and also gives you the benefit of having a server to replace your primary server should it fail. Also note that if your second server (replica) will never see production, then it can get by with significantly lower machine requirements than any production server since it won't be serving any queries or such. HTH -Original Message- From: Joshua J. Kugler [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 29, 2001 11:52 AM To: David Turner; Matthew Walker Cc: MySQL Mailling List Subject: Re: Hot Backups I'm doing a mysqldump and then backing up the resulting text file. Works fine, doesn't interupt anything, and doesn't have any problems with a live server. IIRC, mysqldump locks a table before it dumps, so there won't be any funny records. Or course, mysqldump could catch the database in the middle of a multi-table backup. But so can any live backup system. j- k- - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Update problem, or more likely and problem understanding how to do updates.
Ok, based on the given syntax from the mysql manual.. UPDATE [LOW_PRIORITY] [IGNORE] tbl_name SET col_name1=expr1, [col_name2=expr2, ...] [WHERE where_definition] [ORDER BY ...] [LIMIT #] I've been trying to update some records in a test database I've been playing with. I'm inexperienced with MySQL, so I'm hoping someone out there can enlighten me. When trying to update more than one field at a time, I get the following error: ERROR 1064: You have an error in your SQL syntax near 'set Notes = 'Test' where ID ='1'' at line 1 I was trying to perform the following query to change the data below. mysql select * from Pictures; +++---+--+---+-+ +---++ | ID | Category | Title | Filename | Submitter | Date_Posted | Poster | Notes | Updated| +++---+--+---+-+ +---++ | 1 | Animal Funnies | pic1 | 0001.jpg | Kiwi | 2001-05-08 | WRC| aaa | 0105111248 | | 2 | Animal Funnies | asdfa | 0002.jpg | dsoTm | 2001-05-10 | BLJ| | 0105111036 | | 3 | Animal Funnies | test | 0003.jpg | | 2001-05-10 | BLJ| | 0105102219 | +++---+--+---+-+ +---++ update Pictures set Date_Posted = '2001-05-09', set Notes = 'Test' where ID ='1'; It looks syntatically correct according to the example in the manual, but no matter which combination of fields I try and update, I get that error. Single field updates for all fields works fine. The table is defined as follows: ID = mediumint(8) unsigned NOT NULL auto_increment Category and Poster = enumerated. Title, Filename, Submitter = varchar Date_Posted = date Notes = tinytext Updated = timestamp Please reply directly as I am not on the list. Thanks for your time. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
