What is max allowed packet MySQL?
The largest possible packet that can be transmitted to or from a MySQL 8.0 server or client is 1GB. When a MySQL client or the mysqld server receives a packet bigger than max_allowed_packet bytes, it issues an ER_NET_PACKET_TOO_LARGE error and closes the connection.
What is Back_log in MySQL?
The back_log value indicates how many requests can be stacked during this short time before MySQL momentarily stops answering new requests. You need to increase this only if you expect a large number of connections in a short period of time.
Where is Max_allowed_packet in MySQL?
Open the “my. ini” file under the MySQL server install directory. Search for the “max_allowed_packet” parameter. If the file does not have it, add the parameter to the file.
What is Group_concat_max_len?
The maximum value for group_concat_max_len is 18446744073709551615. The group-concat string does not end with “…” If you try to group too much text, it just gets truncated.
How to change the max allowed packet size?
The max_allowed_packet variable can be set globally by running a query. However, if you do not change it in the my.ini file (as dragon112 suggested), the value will reset when the server restarts, even if you set it globally. To change the max allowed packet for everyone to 1GB until the server restarts:
What is the max allowed packet in MySQL?
Then I execute the query set global max_allowed_packet=33554432 followed by show variables like ‘max_allowed_packet’ – it gives me 33554432 as expected. But when I restart the MySQL server it magically goes back to 1048576. What am I doing wrong here? Bonus question, is it possible to compress a BLOB field?
Is it possible to set max _ allowed _ packet variable by PHP script?
Closed 8 years ago. but I made no changes in my source code and the hosting states that they did not made any change in server settings. I don’t know what happened. But I am trying to find the reason. so, how to check max_allowed_packet mysql variable by php script? and is that possible to set it in source code?