com.mysql.jdbc.PacketTooBigException

Question

I have a big problem! when I do this:

 String query = \"SELECT * FROM utente WHERE confermato=1 and Username=\'\" + username
            + \"\' AND Password         


        

Answer 1

I had the same misleading error message.

I fixed it by changing my port number to 3306. Previously I had the port number set as 2083 because that's what I use on my web server.

Answer 2

Edit your my.cnf(ubunut) or my.ini(windows) file and set max_allowed_packet size.

max_allowed_packet=512M

Then restart your mysql server.It will work

Answer 3

If you are unable to stop your database, you can alternatively set the value of the max allowed packet parameter dynamically. To do so:

1. Log in as a root user.
2. You'll need to set the value as an integer, rather than '256M'. 256M is equivalent to 256*1024*1024, or 268435456.
3. mysql> SET GLOBAL max_allowed_packet=268435456;
4. To check that this has been applied:

    a. Relogin to your mysql client.

    b. mysql> SELECT @@max_allowed_packet;

Restart your Confluence instance.

You will still need to update your /etc/my.cnf file as described in the method above to make the change persistent.