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Home 2016 October MySQL: ERROR 2006 (HY000) MySQL server has gone away

MySQL: ERROR 2006 (HY000) MySQL server has gone away

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ERROR 2006 (HY000:) MySQL server has gone away.

Generally, when we are dealing with large column’s queries and values, MySQL raises this kind of error.

max_allowed_packet:
To resolve this error, we should look into this parameter of MySQL Server.

Whenever we require to process big binary string like BLOB column, we should increase the value of this variable.

The solution of this error is to increase the value of max_allowed_packet parameter.
The default value is 16MB.

You can add below line into my.cnf file:

1
max_allowed_packet=64M

After this change, You must restart the MySQL service.

Oct 2, 2016Anvesh Patel
MySQL: How to get Max Value for each group?PostgreSQL: How we can create Index on Expression?
Comments: 3
  1. Muni
    October 3, 2016 at 7:12 am

    I have increased max allowed packet to 128MB, Still I am facing the same issue

    Fyi…

    max_allowed_packet | 134217728

    >>>>>>>>>>>>>>>>>>
    mysql> select 134217728/1024/1024;
    ERROR 2006 (HY000): MySQL server has gone away
    No connection. Trying to reconnect…
    <<<<<<<<<<<<<<<<<<

    • Anvesh Patel
      Anvesh Patel
      October 3, 2016 at 6:59 pm

      Please check your network latency time.

      • Muni
        October 18, 2016 at 11:34 am

        Thanks for the update and sorry for the late reply.

        It would be great if i get more details on network latency time, how to check and all!

Anvesh Patel
Anvesh Patel

Database Engineer

October 2, 2016 MySQLAnvesh Patel, database, database research and development, dbrnd, max_allowed_packet, MySQL, MySQL Command, MySQL Database Administrator, MySQL Database Designing, MySQL Database Programming, MySQL Error, MySQL Performance Tunning, MySQL Query, MySQL Tips and Tricks
About Me!

I'm Anvesh Patel, a Database Engineer certified by Oracle and IBM. I'm working as a Database Architect, Database Optimizer, Database Administrator, Database Developer. Providing the best articles and solutions for different problems in the best manner through my blogs is my passion. I have more than six years of experience with various RDBMS products like MSSQL Server, PostgreSQL, MySQL, Greenplum and currently learning and doing research on BIGData and NoSQL technology. -- Hyderabad, India.

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