mysql 数据库缓存调优之解决The total number of locks exceeds the lock table size错误

环境：

mysql5.6.2  主从同步（备注：需操作主库和从库）

一、InnoDB表执行大批量数据的更新，插入，删除操作时会出现这个问题，需要调整InnoDB全局的innodb_buffer_pool_size的值来解决这个问题，并且重启mysql服务。

遇到的问题：

mysql报错如下：

The total number of locks exceeds the lock table size错误

二、解决办法

2.1、登录主库查看buffer_pool_size大小

[root@a2 ~]# mysql -uroot -p  （备注：主库）
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 54
Server version: 5.6.24 Source distribution

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

#mysql数据库buffer_pool大小为：8MB
mysql> show variables like "%_buffer%";
+-------------------------------------+----------------+
| Variable_name                       | Value          |
+-------------------------------------+----------------+
| innodb_buffer_pool_size             | 8388608        |
22 rows in set (0.00 sec)

需要调优为：2G-3G

2.2、调优方法

#关闭数据库（备注：主从同步状态正常的情况下关闭主库）

[root@a1 mysql]# /etc/init.d/mysqld stop
Shutting down MySQL........... SUCCESS! 

#修改配置文件 （备注：在主库上面修改配置文件）

[root@a1 mysql]# vi /roobo/server/mysql/my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
#[client]
#port = 3306
#socket = /tmp/mysql.sock
[mysqld_safe]
err-log=/var/log/mysqld.log
pid-file=/var/lib/mysql/mysqld.pid
default-character-set = utf8

[mysqld]
port = 3306
socket = /tmp/mysql.sock
#innodb_buffer_pool_size=8MB  #原文件
innodb_buffer_pool_size=2GB    #修改为2G或 3G，根据表大小，进行调优。
basedir = /roobo/server/mysql
datadir = /roobo/mysqldata/database
pid-file = /var/lib/mysql/mysql.pid
character_set_server = utf8
log-bin = /roobo/server/mysql/data/mysql-bin
server_id = 1

#启动数据库 （备注：在主库上面操作）

[root@a1 mysql]# /etc/init.d/mysqld start
Starting MySQL. SUCCESS!

#再登录数据库检查是否修改成功 （备注：在主库上面操作）

[root@a1 mysql]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.24-log Source distribution

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

#修改成2G
mysql> show variables like "%_buffer%";
+-------------------------------------+----------------+
| Variable_name                       | Value          |
+-------------------------------------+----------------+
| bulk_insert_buffer_size             | 8388608        |
| innodb_buffer_pool_dump_at_shutdown | OFF            |
| innodb_buffer_pool_dump_now         | OFF            |
| innodb_buffer_pool_filename         | ib_buffer_pool |
| innodb_buffer_pool_instances        | 8              |
| innodb_buffer_pool_load_abort       | OFF            |
| innodb_buffer_pool_load_at_startup  | OFF            |
| innodb_buffer_pool_load_now         | OFF            |
| innodb_buffer_pool_size             | 2147483648     |
| innodb_change_buffer_max_size       | 25             |
| innodb_change_buffering             | all            |
| innodb_log_buffer_size              | 8388608        |
| innodb_sort_buffer_size             | 1048576        |
| join_buffer_size                    | 262144         |
| key_buffer_size                     | 8388608        |
| myisam_sort_buffer_size             | 8388608        |
| net_buffer_length                   | 16384          |
| preload_buffer_size                 | 32768          |
| read_buffer_size                    | 131072         |
| read_rnd_buffer_size                | 262144         |
| sort_buffer_size                    | 262144         |
| sql_buffer_result                   | OFF            |
+-------------------------------------+----------------+
22 rows in set (0.00 sec)

mysql> exit

 #备注：从库也要调优相同参数，否则会导致数据库主从不同步

#关闭数据库（备注：主从同步状态正常的情况下关闭从库）

[root@a2 mysql]# /etc/init.d/mysqld stop
Shutting down MySQL........... SUCCESS! 

#修改配置文件 （备注：在从库上面修改配置文件）

[root@a2 mysql]# vi  my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
#[client]
#port = 3306
#socket = /tmp/mysql.sock
[mysqld_safe]
err-log=/var/log/mysqld.log
pid-file=/var/lib/mysql/mysqld.pid
default-character-set = utf8

[mysqld]
port = 3306
socket = /tmp/mysql.sock
#innodb_buffer_pool_size=8MB
innodb_buffer_pool_size=2GB  #把8M修改成2G
basedir = /roobo/server/mysql
datadir = /roobo/mysqldata/database
pid-file = /var/lib/mysql/mysql.pid
character_set_server = utf8
server-id = 2
read_only = 1

#启动数据库 （备注：在从主库上面操作）

[root@a2 mysql]# /etc/init.d/mysqld start
Starting MySQL. SUCCESS! 

#再登录数据库检查是否修改成功 （备注：在从库上面操作）

[root@a2 mysql]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.24-log Source distribution

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

#修改成2G
mysql> show variables like "%_buffer%";
+-------------------------------------+----------------+
| Variable_name                       | Value          |
+-------------------------------------+----------------+
| bulk_insert_buffer_size             | 8388608        |
| innodb_buffer_pool_dump_at_shutdown | OFF            |
| innodb_buffer_pool_dump_now         | OFF            |
| innodb_buffer_pool_filename         | ib_buffer_pool |
| innodb_buffer_pool_instances        | 8              |
| innodb_buffer_pool_load_abort       | OFF            |
| innodb_buffer_pool_load_at_startup  | OFF            |
| innodb_buffer_pool_load_now         | OFF            |
| innodb_buffer_pool_size             | 2147483648     |
| innodb_change_buffer_max_size       | 25             |
| innodb_change_buffering             | all            |
| innodb_log_buffer_size              | 8388608        |
| innodb_sort_buffer_size             | 1048576        |
| join_buffer_size                    | 262144         |
| key_buffer_size                     | 8388608        |
| myisam_sort_buffer_size             | 8388608        |
| net_buffer_length                   | 16384          |
| preload_buffer_size                 | 32768          |
| read_buffer_size                    | 131072         |
| read_rnd_buffer_size                | 262144         |
| sort_buffer_size                    | 262144         |
| sql_buffer_result                   | OFF            |
+-------------------------------------+----------------+
22 rows in set (0.00 sec)

mysql> exit

#再登录从库，查看主从同步情况 （备注：在从库上面操作）

[root@a2 ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 55
Server version: 5.6.24 Source distribution

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.7.19.129
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000015
          Read_Master_Log_Pos: 67365
               Relay_Log_File: mysql-relay-bin.000036
                Relay_Log_Pos: 67528
        Relay_Master_Log_File: mysql-bin.000015
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 67365
              Relay_Log_Space: 67864
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error:
               Last_SQL_Errno: 0
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 1
                  Master_UUID: 4afce67d-d694-11e8-94c2-00163e0a2eec
             Master_Info_File: /roobo/mysqldata/database/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set:
                Auto_Position: 0
1 row in set (0.00 sec)

ERROR:
No query specified

mysql> exit
Bye