Re: Connector/J "Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost."
Posted by: Jean-Nicolas Duval
Date: June 02, 2008 07:29PM

I had this problem giving me headaches too!! I finally sovled it by editing my configuration file, my.cnf (commenting the last line of the following; i.e #skip-networking) :

# The MySQL server
[mysqld]
port = 3306
socket = /opt/lampp/var/mysql/mysql.sock
skip-locking
key_buffer = 16M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking




As some might have noticed, I am using LAMPP for Mysql so I restarted it (with $sudo lampp restart) and the problem is solved! (For mysqld the dommand would be $service mysqld restart).

I know this might decrease the security of my system but one can use the GRANT PRIVILIGES option to avoid intrusions...

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Re: Connector/J "Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost."
June 02, 2008 07:29PM


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