RE: MySQL Replication Binary Logs - How Long to Keep?
Note that you should not just delete the bin logs. Instead use PURGE MASTER LOGS. See http://dev.mysql.com/doc/refman/4.1/en/purge-master-logs.html hth, mark Sorry, accidently hit Ctrl/Enter :( Anyway, I can't purge with that command: mysql PURGE MASTER LOGS TO 'mysql-bin.023'; ERROR: A purgeable log is in use, will not purge Any ideas? I'm tempted to just delete but would prefer to do this the right way, and for some reason it thinks they are in use :/. I'm showing: mysql show master status; +--+---+--+--+ | File | Position | Binlog_do_db | Binlog_ignore_db | +--+---+--+--+ | repl.024 | 110962544 | | | +--+---+--+--+ 1 row in set (0.00 sec) Thanks, Warren -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Connection Help - Stupid Question, sorry to bother.
Hi, Im sure this is a stupid problem but im a bit confused, and some assistance would be greatly appreciated. Im trying to assist with the maintenance/updating of a php site for a school which uses mysql, and is allready up and running on a remote server. I have the ftp username and password, and i can access the php/html side of things no problems, but i want to connect to the mysql database on the server, and as stupid as it sounds, i have no idea how to go about connecting. Ive used mysql before, not very efficiently, but never have had to set it up, i was always told the program and connection details. I downloaded a mysql program (enginsite MySql client) and tried to connect but am not having any luck and have no idea what the port is supposed to be... the detail i have are: (of course ive undisclosed the username/passwords) DOMAIN ACCOUNT DETAILS Domain Name: www.mhmcindia.org FTP DETAILS Host Name / IP Address: 216.67.234.167 or ftp.mhmcindia.org username: undisclosed password: undisclosed and the PHP connects through the script (on the remote server of course) $host=localhost; $username=undisclosed; $password=undisclosed; $db=undisclosed; $link = mysql_connect($host, $username,$password) or die(Could not connect : . mysql_error()); mysql_select_db($db) or die(Could not select database); Is there anyway i can connect to the mysql database with these details? if so how? Im sorry for asking seemingly obvious questions, but some assistance would be greatly appreciated. Thanks, Sana
Re: Connection Help - Stupid Question, sorry to bother.
By default MySQL uses port 3306 so you need to be sure that port is open on the server, and not blocked by a firewall. You also need to be sure the user you are trying to login as can login remotely. In the MySQL user data base, there is a column for host which is the host that user can login from. If that host says localhost you can only login from the localhost. If it says % you can login from any host. Also note there can be more than one entry for each user all with a different host. It is best to only set it up so you can login from a specific host, that makes it more difficult for a hacker to break in. If the user you are logging in as is set up just for localhost I would add a user and use the host you plan to login from if you can, other wise just change the host to % then you can login from anywhere. Also if you do an update to the user table, using the sql update command, you also need to execute flush privileges for the changes to take effect. Sana Farshidi wrote: Hi, Im sure this is a stupid problem but im a bit confused, and some assistance would be greatly appreciated. Im trying to assist with the maintenance/updating of a php site for a school which uses mysql, and is allready up and running on a remote server. I have the ftp username and password, and i can access the php/html side of things no problems, but i want to connect to the mysql database on the server, and as stupid as it sounds, i have no idea how to go about connecting. Ive used mysql before, not very efficiently, but never have had to set it up, i was always told the program and connection details. I downloaded a mysql program (enginsite MySql client) and tried to connect but am not having any luck and have no idea what the port is supposed to be... the detail i have are: (of course ive undisclosed the username/passwords) DOMAIN ACCOUNT DETAILS Domain Name: www.mhmcindia.org FTP DETAILS Host Name / IP Address: 216.67.234.167 or ftp.mhmcindia.org username: undisclosed password: undisclosed and the PHP connects through the script (on the remote server of course) $host=localhost; $username=undisclosed; $password=undisclosed; $db=undisclosed; $link = mysql_connect($host, $username,$password) or die(Could not connect : . mysql_error()); mysql_select_db($db) or die(Could not select database); Is there anyway i can connect to the mysql database with these details? if so how? Im sorry for asking seemingly obvious questions, but some assistance would be greatly appreciated. Thanks, Sana -- Chris W KE5GIX Gift Giving Made Easy Get the gifts you want give the gifts they want One stop wish list for any gift, from anywhere, for any occasion! http://thewishzone.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Do I really need a subquery?
Hi, I've ended up with the following SQL: SELECT `title`, `url`, COUNT(1) AS `count`, CEIL(COUNT(1) / (SELECT COUNT(1) AS `count` FROM `bi_bookmarks` WHERE `date` NOW() - INTERVAL 86400 SECOND GROUP BY `url` ORDER BY `count` DESC LIMIT 0, 1) * 8) AS `weight` FROM `bi_bookmarks` WHERE `date` NOW() - INTERVAL 86400 SECOND GROUP BY `url` ORDER BY `count` DESC LIMIT 0, 10; Do I really need that subquery? It seems rather pointless having similar queries like that. Any other optimisations tips are of course welcome (just to note, there are reasons for having the interval in seconds). - Geoffrey Sneddon -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: More than 4 CPUs?
If you're using 4 or 8 cpus, I highly recommend considering Solaris 10. It's free and it's true threading implementation and fine grained locking increase scalability and even out cpu load on multi-cpu systems much better than my RHEL 4 U2 (Linux 2.6) systems do. Their benchmarks back up my experiences. I have 8 4-cpu and 2 8-cpu systems which are dedicated MySQL systems. I am running Solaris 10 on the 8 cpu systems, and I am amazed at how well the load balances, and how much faster it is. All of these systems are Opteron dual core. Two of them (the 8 core systems) are Sun's V40z's, the other systems are Supermicro Opterons. Sun also has some awesome CoolThreads offerings (SPARC architecture), but I haven't had a chance to benchmark one yet. With 32 concurrent threads on a single 8 core 4 way threaded cpu, I'd like to see how MySQL's performance is on those systems. Does anyone have any experience with or information about CoolThreads systems running MySQL? Even if you stick to amd64, I think for high end MySQL usage, Solaris 10 is the way to go. - Original Message - From: Scott Tanner [EMAIL PROTECTED] To: mysql@lists.mysql.com Sent: Friday, August 11, 2006 12:53 PM Subject: Re: More than 4 CPUs? From the articles I've read recently, 8 CPU's seems to be the point where the scalability ratio starts dropping. See the following articles for examples: http://developers.sun.com/solaris/articles/mysql_perf_tune.html http://corporateclub.mandriva.com/xwiki/bin/download/Main/Technology/mysql-performance-whitepaper.pdf I know there were some presentations at this years MySQL Conference that went over this (MySQL Performance Landscape comes to mind). You might be able to find a presentations on the mysql site. Regards, Scott Tanner On Fri, 2006-08-11 at 14:44 -0400, Ed Pauley II wrote: It seems like I once read that you don't get any performance gains in MySQL when you go above 4 CPUs per server. Is this correct? I was considering a 4 dual-core CPU machine. Should I go with a 2 dual-core machine instead? Thanks! -- Ed Pauley II -- 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]
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I use SELECT all from * ... and one row is a gif. How do I get that gif to appear as a gif and not text? -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
