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2018-08-17
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摘要:本文主要向大家介绍了MySQL数据库之MySQL RROR 1206 (HY000): ,通过具体的内容向大家展现,希望对大家学习MySQL数据库有所帮助。
本文主要向大家介绍了MySQL数据库之MySQL RROR 1206 (HY000): ,通过具体的内容向大家展现,希望对大家学习MySQL数据库有所帮助。
最近发现一客户开发公司给部署的生产mysql数据库innodb_buffer_pool_size是默认值,物理内存为32G,结果很明显,性能问题很大。
建议设置innodb_buffer_pool_size 为物理内存的50%~80%为宜。ERROR 1206 (HY000): The total number of locks exceeds the lock table size
-bash-4.1$ ./mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.19-log MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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>
mysql> show variables like ‘innodb_buffer_pool_size‘;
+-------------------------+----------+
| Variable_name | Value |
+-------------------------+----------+
| innodb_buffer_pool_size | 67108864 |
+-------------------------+----------+
1 row in set (0.00 sec)
mysql> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> insert into t select * from t;
ERROR 1206 (HY000): The total number of locks exceeds the lock table size
mysql>
mysql> set global innodb_buffer_pool_size=1024000*1024
-> ;
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> insert into t select * from t;
Query OK, 67108864 rows affected (8 min 53.81 sec)
Records: 67108864 Duplicates: 0 Warnings: 0
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