phpMyAdmin 中的 MySQL “#2006 - MySQL 服务器已消失”

Posted 2023-02-25

【中文标题】phpMyAdmin 中的 MySQL “#2006 - MySQL 服务器已消失”

【英文标题】：MySQL “#2006 - MySQL server has gone away” in phpMyAdmin

【发布时间】：2016-06-21 06:39:31

【问题描述】：

我正在尝试上传一个包含超过 10 万个条目的 10 MB CSV Excel 文件，并且在 phpMyAdmin 中不断出现“mysql 服务器已消失”错误。我正在使用 WAMP 服务器，我更改了我可以在 my.ini 文件中找到的所有变量，但没有结果。重启服务器后也不行。 我变了：

max_allowed_packet = 1000M 
innodb_log_file_size = 500M
innodb_log_buffer_size = 800M
innodb_lock_wait_timeout = 600

整个 my.ini 文件如下所示：

enter co# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is C:\mysql\data) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MySQL clients
[client]
#password   = your_password
port        = 3306
socket      = /tmp/mysql.sock

# Here follows entries for some specific programs

# The MySQL server
[wampmysqld]
port        = 3306
socket      = /tmp/mysql.sock
key_buffer_size = 16M
max_allowed_packet = 1000M
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 8M
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
basedir=c:/wamp/bin/mysql/mysql5.6.17
log-error=c:/wamp/logs/mysql.log
datadir=c:/wamp/bin/mysql/mysql5.6.17/data

lc-messages-dir=c:/wamp/bin/mysql/mysql5.6.17/share

# Change your locale here !
lc-messages=fr_FR

# Avoid warning
explicit_defaults_for_timestamp = TRUE

# 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

# Disable Federated by default
skip-federated

# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin

# binary logging format - mixed recommended
binlog_format=mixed

# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id   = 1

# Replication Slave (comment out master section to use this)


# New for MySQL 5.6 if no slave
skip-slave-start

#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
#    the syntax is:
#
#    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
#    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
#    where you replace <host>, <user>, <password> by quoted strings and
#    <port> by the master's port number (3306 by default).
#
#    Example:
#
#    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
#    MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
#    start replication for the first time (even unsuccessfully, for example
#    if you mistyped the password in master-password and the slave fails to
#    connect), the slave will create a master.info file, and any later
#    change in this file to the variables' values below will be ignored and
#    overridden by the content of the master.info file, unless you shutdown
#    the slave server, delete master.info and restart the slaver server.
#    For that reason, you may want to leave the lines below untouched
#    (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id       = 2
#
# The replication master for this slave - required
#master-host     =   <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user     =   <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password =   <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port     =  <port>
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin

# Point the following paths to different dedicated disks
#tmpdir     = /tmp/     
#log-update     = /path-to-dedicated-directory/hostname

# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = C:\mysql\data/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = C:\mysql\data/
#innodb_log_arch_dir = C:\mysql\data/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
innodb_buffer_pool_size = 511M
#innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
innodb_log_file_size = 500M
innodb_log_buffer_size = 800M
#innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 600

[mysqldump]
quick
max_allowed_packet = 1000M

[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates

[isamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[myisamchk]
key_buffer = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

[mysqld]
port=3306
explicit_defaults_for_timestamp = TRUE

【问题讨论】：

使用mysql命令提示符wampmanager -> MYSQL -> console加载文件

【参考方案1】：

尝试增加wait_timeout的设置

如果这不起作用，请尝试增加 interactive_timeout。

另外，增加 innodb 的锁定时间是在查询级别；这意味着如果另一个查询拥有锁，查询将等待多长时间才能获得锁。然后这将导致类似于1205 Lock wait timeout exceeded 的效果被扔回客户端。

【讨论】：

wait_timeout 和 interactive_timeout 在 my.ini 文件中根本不存在。我尝试添加 wait_timeout 但我想该变量根本没有使用。

我添加了：wait_timeout = 600M net_read_timeout = 600M net_write_timeout = 600M interactive_timeout = 600M 不过没有结果。

抱歉，我现在阅读了选项。更改如下：wait_timeout = 2147482 net_read_timeout = 60000000 net_write_timeout = 60000000 interactive_timeout = 60000000。它不起作用。我不知道还能做什么。