Fast solution for Magento
php bin/magento config:set system/security/max_session_size_admin 2048000
php bin/magento config:set system/security/max_session_size_admin 0
When you see the error message “Session size of 259343 exceeded allowed session max size of 256000,” it means that the session data you are trying to store is too large for the maximum allowed size of the session.
Sessions are a way for websites and web applications to store information about a user’s interaction with the website or application. This information can be used to personalize the user’s experience or to keep track of the user’s progress through a process, such as an online checkout.
Each session has a maximum size limit, which is set by the web server or the application framework. When a session exceeds this limit, the server or framework will return an error message like the one above.
There are several reasons why a session might exceed the maximum allowed size. One common reason is that the application is storing too much data in the session. This could be caused by storing large amounts of user input, such as form data or uploaded files, in the session.
Another reason why a session might exceed the maximum size is that the application is not properly managing the session data. For example, the application might be storing duplicate copies of the same data in the session, or it might be storing data that is no longer needed.
To fix this error, you will need to reduce the size of the session data. One way to do this is to only store the data that is necessary for the application to function. For example, if the application only needs to remember the user’s login credentials, it might only store the user’s username and password in the session.
Another way to reduce the size of the session data is to store the data in a database or other external storage system instead of the session. This can be especially useful for storing large amounts of data, such as uploaded files.
Finally, it is important to properly manage the session data to avoid storing unnecessary data or duplicate copies of the same data. This can be done by periodically cleaning up the session data and removing any data that is no longer needed.
In conclusion, the “Session size of 259343 exceeded allowed session max size of 256000” error message indicates that the session data is too large for the maximum allowed size of the session. To fix this error, you will need to reduce the size of the session data and properly manage the session data to avoid storing unnecessary data or duplicate copies of the same data.
How can we fix this error?
To fix the error “Session size of 259343 exceeded allowed session max size of 256000,” you can take the following steps:
Review the session data: Take a look at what data is being stored in the session and identify any unnecessary or duplicate data. Remove any data that is not needed or can be stored elsewhere.
Reduce the size of data being stored: If possible, try to reduce the amount of data being stored in the session. For example, if you are storing large images or files, you can store them in a database or on the file system and only store a reference to them in the session.
Increase the maximum session size limit: If you have control over the server or framework configuration, you can increase the maximum session size limit to accommodate the amount of data being stored. However, this should only be done if necessary and with caution, as it can have performance implications.
Use alternative storage options: If the amount of data being stored in the session is too large, you can consider using alternative storage options such as cookies or local storage.
Implement a session data management strategy: Implement a session data management strategy that periodically cleans up the session data and removes any unnecessary or expired data. This can help prevent the session from growing too large in the future.
By taking these steps, you can fix the error and ensure that your application is properly managing session data.