BlackHole :黑洞引擎,寫入的任何資料都會消失,用於記錄binlog做複製的中繼儲存!如何安裝: 在安裝MySQL時使用帶有--with-blackhole-storage-engine選項的configure命令。BLACKHOLE儲存引擎在MySQ供應的伺服器二進位版裡可以找到:通過查看SHOW ENGINES或SHOW VARIABLES LIKE 'have%'的輸出來查看但前的mysql版本是否支援這個引擎。mysql> SHOW ENGINES;+-----
MySQL總是崩潰 首先你應該試著找出問題mysqld守護進程是否死掉或你的問題是否與你的客戶有關。你可以用mysqladmin version檢查你的mysqld伺服器正常執行了多長時間,如果mysqld死了,你可以在檔案“mysql-data-directory/'hostname'.err”中找到其原因。 使用MySQL時的一些常見錯誤 MySQL server has gone away 常見的原因是伺服器逾時了並且關閉了串連。預設地,如果沒有事情發生,伺服器在
SQL #1: select * from uchome_feed where uid in('0',501...) order by dateline desc limit 0,50; SQL #2: select * from uchome_feed where uid in(0,501...) order by dateline desc limit 0,50; SQL #1 是CSDN 個人空間擷取個人動態SQL,屬UCH原版SQL。 SQL #2 是去掉單引號(SQL
安裝完mysql-python後import載入模組提示以下錯誤,ImportError: libmysqlclient_r.so.16: cannot open shared object file: No such file or directory於是google之,總結一下解決方案:將mysql/lib下所有關於libmysqlclient的so檔案軟連結到/usr/lib下。ln -s /usr/local/mysql/lib/mysql/libmysqlclient*
I started to write this post many weeks ago and finally publish it even if it’s not totally finish. It is just a little feedback about tuning a full LAMP server with some user traffic and services load. Important thing to notice is that all stuff in
Audit mysql query slow.1. start slow log. Two method: (1)edit my.cnf ,add text as belows to [mysqld]. #if long_query_time=0, all queries will be saved to log file long_query_time=1 #create the log file and give the log
1. 改表法 可能是你的帳號不允許從遠程登陸,只能在localhost。這個時候只要在localhost的那台電腦,登入mysql後,更改 "mysql" 資料庫裡的 "user" 表裡的 "host" 項,從"localhost"改成"%" mysql -u root -pvmware mysql>use mysql; mysql>update user set host = '%' where user =