Client Area

How to Fix MySQL Error 1282 – SQLSTATE: HY000 (ER_WARN_QC_RESIZE) Query cache failed to set size %lu; new query cache size is %lu

How to Fix MySQL Error 1282 – SQLSTATE: HY000 (ER_WARN_QC_RESIZE) Query cache failed to set size %lu; new query cache size is %lu

MySQL is a popular open-source relational database management system used by many websites and applications. However, like any software, it can encounter errors that can disrupt its normal operation. One such error is MySQL Error 1282 – SQLSTATE: HY000 (ER_WARN_QC_RESIZE) Query cache failed to set size %lu; new query cache size is %lu. In this article, we will explore the causes of this error and provide solutions to fix it.

Understanding MySQL Error 1282

MySQL Error 1282 occurs when the query cache fails to set its size to the specified value. The error message includes the current and new query cache sizes, represented by %lu. This error can occur due to various reasons, including insufficient memory allocation, incorrect configuration settings, or conflicts with other MySQL settings.

Fixing MySQL Error 1282

Here are some steps you can take to resolve MySQL Error 1282:

1. Check Query Cache Configuration

Start by checking the query cache configuration in your MySQL server. Open the MySQL configuration file (usually my.cnf or my.ini) and locate the query_cache_size parameter. Ensure that the value is set correctly and within the acceptable range. The query_cache_size value should be a multiple of 1024 and not exceed the maximum allowed size for your system.

[mysqld]
query_cache_size = 64M

2. Increase Memory Allocation

If the query cache size is already set correctly, the error may be due to insufficient memory allocation. Increase the memory allocated to MySQL by modifying the innodb_buffer_pool_size and key_buffer_size parameters in the MySQL configuration file. These parameters control the memory allocated to InnoDB and MyISAM storage engines, respectively.

[mysqld]
innodb_buffer_pool_size = 512M
key_buffer_size = 256M

3. Disable Query Cache

If the above steps do not resolve the issue, you can try disabling the query cache altogether. Set the query_cache_type parameter to 0 in the MySQL configuration file to disable the query cache.

[mysqld]
query_cache_type = 0

4. Restart MySQL Server

After making any changes to the MySQL configuration file, restart the MySQL server to apply the changes. Use the appropriate command for your operating system to restart the MySQL service.

Summary

MySQL Error 1282 – SQLSTATE: HY000 (ER_WARN_QC_RESIZE) Query cache failed to set size %lu; new query cache size is %lu can be resolved by checking the query cache configuration, increasing memory allocation, disabling the query cache, or restarting the MySQL server. If you encounter this error, follow the steps outlined in this article to fix it.

For reliable and high-performance VPS hosting solutions, consider Server.HK. Our VPS hosting services offer top-notch performance and reliability for your website or application.