MYSQL中怎么調(diào)整日志組

本篇文章為大家展示了MYSQL中怎么調(diào)整日志組，內(nèi)容簡明扼要并且容易理解，絕對能使你眼前一亮，通過這篇文章的詳細(xì)介紹希望你能有所收獲。

1、查看關(guān)閉方式：

mysql> show variables like '%fast%';

+----------------------+-------+

| Variable_name        | Value |

+----------------------+-------+

| innodb_fast_shutdown | 1     |

+----------------------+-------+

1 row in set (0.00 sec)

該參數(shù)解釋如下：,默認(rèn)值為1，設(shè)置為0 是干凈的關(guān)閉 和ORACLE里面shutdown immeidate對應(yīng)

The InnoDB shutdown mode. If the value is 0, InnoDB does a slow shutdown, a full purge and a change buffer merge before shutting down. If the value is 1 (the default), InnoDB skips these operations at shutdown, a process known as a fast shutdown. If the value is 2, InnoDB flushes its logs and shuts down cold, as if MySQL had crashed; no committed transactions are lost, but the crash recovery operation makes the next startup take longer.。

2、調(diào)整參數(shù)innodb_fast_shutdown為0

set global innodb_fast_shutdown=0

3、關(guān)閉MYSQL

       mysqladmin -uroot  shutdown -S /home/mysql-5.6/mysql-3306/mysql.sock

4、調(diào)整REDO大小，日志文件默認(rèn)命名是ib_logfile開頭

1、找到REDO文件所在目錄(有幾個文件處理幾個，移動到其他目錄)。

mv ib_logfilexx   ../ ib_logfilexx

2、添加參數(shù):日志組個數(shù)和日志大小到參數(shù)文件

在參數(shù)文件[mysqld]下面添加如下參數(shù)
innodb_log_file_size = 512M –每個日志組大小512M

innodb_log_files_in_group = 3—一共3組日志組

5、   打開mysql

    ./mysqld_safe   --defaults-file=/home/mysql-5.6/mysql-3307/my.cnf  &

6、查看修改后的日志組大小和個數(shù)

mysql> show variables like '%log_file%';

+---------------------------+------------------------------------------------+

| Variable_name             | Value                                          |

+---------------------------+------------------------------------------------+

| general_log_file          | /home/mysql-5.6/mysql-3306/data/test1.log      |

| innodb_log_file_size      | 536870912                                      |

| innodb_log_files_in_group | 3                                              |

| slow_query_log_file       | /home/mysql-5.6/mysql-3306/data/test1-slow.log |

+---------------------------+------------------------------------------------+

4 rows in set (0.00 sec)

上述內(nèi)容就是MYSQL中怎么調(diào)整日志組，你們學(xué)到知識或技能了嗎？如果還想學(xué)到更多技能或者豐富自己的知識儲備，歡迎關(guān)注億速云行業(yè)資訊頻道。