MySQL · December 20, 2023

How to Fix MySQL Error 1259 - SQLSTATE: HY000 (ER_ZLIB_Z_DATA_ERROR) ZLIB: Input data corrupted

How to Fix MySQL Error 1259 - SQLSTATE: HY000 (ER_ZLIB_Z_DATA_ERROR) ZLIB: Input data corrupted

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 1259, also known as SQLSTATE: HY000 (ER_ZLIB_Z_DATA_ERROR) ZLIB: Input data corrupted. In this article, we will explore the causes of this error and provide solutions to fix it.

Understanding MySQL Error 1259

MySQL Error 1259 occurs when there is an issue with the zlib library, which is responsible for data compression and decompression in MySQL. The error message indicates that the input data being processed by zlib is corrupted, leading to the error.

Possible Causes of MySQL Error 1259

There are several potential causes for MySQL Error 1259:

  • Corrupted Data: The input data being processed by zlib may be corrupted, causing the error. This can happen due to various reasons, such as network issues or disk errors.
  • Incompatible zlib Version: If you are using an outdated or incompatible version of the zlib library, it can lead to errors like MySQL Error 1259.
  • Incorrect Configuration: Incorrect configuration settings in MySQL can also trigger this error. For example, if the zlib compression option is enabled but the zlib library is not properly installed or configured, it can result in the error.

Fixing MySQL Error 1259

To resolve MySQL Error 1259, you can try the following solutions:

1. Check for Corrupted Data

If the error is caused by corrupted data, you can try to identify and fix the underlying issue. Check your network connections, disk health, and any other factors that may contribute to data corruption. If necessary, restore the affected data from a backup.

2. Update zlib Library

If you are using an outdated or incompatible version of the zlib library, updating it to the latest version may resolve the error. Visit the zlib website or consult the MySQL documentation for instructions on how to update the zlib library.

3. Verify Configuration Settings

Ensure that the zlib compression option is correctly configured in your MySQL settings. Check the "my.cnf" or "my.ini" configuration file and make sure the zlib-related options are set correctly. If needed, consult the MySQL documentation or seek assistance from a qualified MySQL administrator.

4. Disable zlib Compression

If none of the above solutions work, you can try disabling zlib compression altogether. This can be done by modifying the MySQL configuration file and setting the "compress" option to "0". However, keep in mind that this will disable data compression, which may impact performance.

Summary

MySQL Error 1259 (SQLSTATE: HY000 (ER_ZLIB_Z_DATA_ERROR) ZLIB: Input data corrupted) can be caused by various factors, including corrupted data, incompatible zlib versions, and incorrect configuration settings. To fix this error, you can check for corrupted data, update the zlib library, verify configuration settings, or disable zlib compression. If you are experiencing this error, consider seeking assistance from a qualified MySQL administrator or referring to the MySQL documentation for further guidance.

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