标签:engine form dump 信息 mysql数据库 change mysql存储引擎 def ***
问题:由于环境中的Mysql数据库使用的是Mysql5.1.77版本 ,使用的是MYISAM引擎 ,会导致表级锁,并且不支持故障自动恢复(CSR)
表级锁:对表中任意一行数据修改操作时,整个表都会被锁定,对其他行的数据都不能操作
不支持故障自动恢复(CSR) :当断电时可能会出现数据损坏或丢失的问题
解决方案: 将数据库升级到5.6.44版本并更换引擎为Innodb
5.1.77里对Innodb的支持不够完善,更换版本为5.6.44
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| aaa |
| mysql |
| performance_schema |
+--------------------+
8 rows in set (0.00 sec)
mysql>
mysql> show tables;
+---------------+
| Tables_in_aaa |
+---------------+
| a1 |
| b1 |
| c1 |
| d1 |
+---------------+
4 rows in set (0.00 sec)
mysql> select table_schema,table_name,engine from information_schema.tables where engine='myisam';
+--------------------+---------------------------+--------+
| table_schema | table_name | engine |
+--------------------+---------------------------+--------+
| aaa | a1 | MyISAM |
| aaa | b1 | MyISAM |
| aaa | c1 | MyISAM |
| aaa | d1 | MyISAM |
+--------------------+---------------------------+--------+
35 rows in set (0.00 sec)
[root@db01 ~]# mysqldump -uroot -p -S /data/3307/data/mysql.sock -B aaa >/tmp/aa.sql
Enter password:***
[root@db01 ~]# scp /tmp/aa.sql root@172.16.1.52:/a.sql
root@172.16.1.52's password:
aa.sql 100% 3450 2.7MB/s 00:00
[root@db01 ~]#
[root@db02 ~]# sed -i 's#ENGINE=MyISAM#ENGINE=INNODB#g' /a.sql
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| aaa |
| mysql |
| performance_schema |
| test |
+--------------------+
5 rows in set (0.00 sec)
mysql>
mysql> use aaa
Database changed
mysql> show tables;
+---------------+
| Tables_in_aaa |
+---------------+
| a1 |
| b1 |
| c1 |
| d1 |
+---------------+
4 rows in set (0.00 sec)
mysql> show create table a1;
+-------+-------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+-------+-------------------------------------------------------------------------------------------------------------------------+
| a1 | CREATE TABLE `a1` (
`id` int(11) DEFAULT NULL,
`name` varchar(12) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+-------+-------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
mysql>
#ENGINE=InnoDB 已经被更改为Innodb
标签:engine form dump 信息 mysql数据库 change mysql存储引擎 def ***
原文地址:https://www.cnblogs.com/wesley-Linux/p/12335101.html