mysql> set global read_only=0;Query OK, 0 rows affected (0.00 sec)mysql> show variables like '%read_only%';+------------------+-------+| Variable_name | Value |+------------------+-------+| innodb_read_only | OFF || read_only | OFF
14.5.5 Deadlocks in InnoDB14.5.5.1 An InnoDB Deadlock Example14.5.5.2 Deadlock Detection and Rollback14.5.5.3 How to Minimize and Handle Deadlocks死結是一種情況 不同的事務是不能處理 因為每個持有的lock 是其他會話需要的。因為所有事務都是等待一個資源變得可用,兩者都不釋放它持有的鎖一個deadlock 可以發生
14.5.5.1 An InnoDB Deadlock Example 一個InnoDB 死結執行個體下面的例子示範了一個錯誤可以發生當一個lock 請求會導致一個死結,例子設計2個用戶端,A和B:Jekins:/root# mysql -uroot -p1234567 -e"SHOW ENGINE INNODB STATUS\G;" | grep -i deadWarning: Using a password on the command line interface
有時你會遇到類似下面的錯誤: 120414 2:20:34 InnoDB: ERROR: the age of the last checkpoint is 241588252,InnoDB: which exceeds the log group capacity 241588224.InnoDB: If you are using big BLOB or TEXT rows, you must set the InnoDB: combined size of log
今天遇到一個問題:一個資料庫suspect了,然後又被使用者detach了。 1,嘗試將資料庫attach回去,由於log file損壞失敗了。 2,嘗試將資料庫attach回去,同時rebuild log。由於資料庫“The log cannot be rebuilt because the database was not cleanly shut down.”失敗了。提示有未完成的transaction,no
轉自:http://nginx.org/en/docs/beginners_guide.html This guide gives a basic introduction to nginx and describes some simple tasks that can be done with it. It is supposed that nginx is already installed on the reader’s machine. If it is not, see the&