中国邮政EMS单号怎么查询:
1、打开手机微信。
2、添加好友“EMS中国邮政速递物流”公众号。
3、点击“关注”。
4、在公众号点击”查询单号“,输入信息后即可查询。
中国速递服务公司为中国邮政集团公司直属全资公司,主要经营国际、国内EMS特快专递业务,是目前中国速递行业的最大运营商和领导者,也是中国速递服务的最早供应商。
中国邮政EMS:
1国内特快专递(EMS)业务作为中国邮政速递物流的精品业务。
2以高速度、高质量为用户传递国内紧急文件资料及物品。
3同时提供多种形式的邮件跟踪查询服务。
4目前,国内已有近2000个市、县开办了此项业务。该业务可办理异地特快专递业务和同城特快专递业务。
5EMS特快专递业务自1980年开办以来,业务量逐年增长,业务种类不断丰富,服务质量不断提高。除提供邮政快递、国际邮政包裹特快专递服务外,EMS相继推出国内次晨达和次日递、国际承诺服务和限时递等高端服务,同时提供收件人付费、鲜花礼仪速递、代收货款等增值服务。
如果你的EMS在网上无法查询到,只有两种可能:
1、你提供的EMS单号不正确。
2、证明你的对方绝对绝对100%没有发货。如果发货了就让他给你扫描一份发货的收据,以邮局邮戳为记!你就真的知道他是不是在骗你了!
特别注明春节期间不会影响你的邮件录入数据库,哪怕是年30寄的邮件都是可以查询到的在网上!
mysql耗内存吗很多人都说MySQL占用了很大的虚拟内存,那么这个问题应该怎么解决呢下面是我收集整理的一些方法,现在分享给大家!
解决mysql耗内存的具体方法一:
在分析的过程中发现最耗内存的是MySQL,其中近1GB的内存被它吞了,而且不在任务管理器体现出来。这个数据库软件是EMS要用到了,所以必须要运行。这个软件在安装的时候会根据机器的实际内存自动进行配置,PC机物理内存越多,它默认占有的内存就越多,难怪3GB的内存被它给吞了近1GB。
优化方法:
1 退出EMS client&server
2 在CMD里运行:net stop mysql
3 找到MySQL\MySQL Server的安装目录,里面有个myini文件,参考附件的配置对参数query_cache_size tmp_table_size myisam_sort_buffer_size key_buffer_size innodb_buffer_pool_size进行修改,注意不要改动innodb_log_file_size,修改前备份myini
4 在CMD里运行:net start mysql,如果提示成功,则说明修改的参数没有什么问题,如果失败,重新调整一下上面的参数
5 找到EMS 安装目录runGUIbat runServerbat脚本,找到-Xmx700m,改为-Xmx256m,注意修改前备份这两个文件,感谢Liping Sun提供帮助
6 重新运行EMS
前后对比,对于3GB的PC,发现可以节省近1GB的内存。对于2GB的PC,也可以节省600-800MB。优化后发现EMS启动稍微慢一些,但是其它的软件运行速度提高了很多,不在经常出现卡机现象了。如果在运行过程中发现EMS特别慢的话,自己也可以适当放大上面提到的一些参数。
myini
# MySQL Server Instance Configuration File
# ----------------------------------------------------------------------
# Generated by the MySQL Server Instance Configuration Wizard
#
#
# Installation Instructions
# ----------------------------------------------------------------------
#
# On Linux you can copy this file to /etc/mycnf to set global options,
# mysql-data-dir/mycnf to set server-specific options
# (@localstatedir@ for this installation) or to
# ~/mycnf to set user-specific options
#
# On Windows you should keep this file in the installation directory
# of your server (eg C:\Program Files\MySQL\MySQL Server XY) To
# make sure the server reads the config file use the startup option
# "--defaults-file"
#
# To run run the server from the command line, execute this in a
# command line shell, eg
# mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server XY\myini"
#
# To install the server as a Windows service manually, execute this in a
# command line shell, eg
# mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server XY\myini"
#
# And then execute this in a command line shell to start the server, eg
# net start MySQLXY
#
#
# Guildlines for editing this file
# ----------------------------------------------------------------------
#
# In this file, you can use all long options that the program supports
# If you want to know the options a program supports, start the program
# with the "--help" option
#
# More detailed information about the individual options can also be
# found in the manual
#
#
# CLIENT SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by MySQL client applications
# Note that only client applications shipped by MySQL are guaranteed
# to read this section If you want your own MySQL client program to
# honor these values, you need to specify it as an option during the
# MySQL client library initialization
#
[client]
port=3306
[mysql]
default-character-set=utf8
# SERVER SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by the MySQL Server Make sure that
# you have installed the server correctly (see above) so it reads this
# file
#
[mysqld]
# The TCP/IP Port the MySQL Server will listen on
port=3306
#Path to installation directory All paths are usually resolved relative to this
basedir="D:/Program Files/MySQL/MySQL Server 51/"
#Path to the database root
datadir="C:/Documents and Settings/All Users/Application Data/MySQL/MySQL Server 51/Data/"
# The default character set that will be used when a new schema or table is
# created and no character set is defined
character-set-server=utf8
# The default storage engine that will be used when create new tables when
default-storage-engine=INNODB
# Set the SQL mode to strict
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
# The maximum amount of concurrent sessions the MySQL server will
# allow One of these connections will be reserved for a user with
# SUPER privileges to allow the administrator to login even if the
# connection limit has been reached
max_connections=1510
# Query cache is used to cache SELECT results and later return them
# without actual executing the same query once again Having the query
# cache enabled may result in significant speed improvements, if your
# have a lot of identical queries and rarely changing tables See the
# "Qcache_lowmem_prunes" status variable to check if the current value
# is high enough for your load
# Note: In case your tables change very often or if your queries are
# textually different every time, the query cache may result in a
# slowdown instead of a performance improvement
query_cache_size=16M
# The number of open tables for all threads Increasing this value
# increases the number of file descriptors that mysqld requires
# Therefore you have to make sure to set the amount of open files
# allowed to at least 4096 in the variable "open-files-limit" in
# section [mysqld_safe]
table_cache=3020
# Maximum size for internal (in-memory) temporary tables If a table
# grows larger than this value, it is automatically converted to disk
# based table This limitation is for a single table There can be many
# of them
tmp_table_size=4M
# How many threads we should keep in a cache for reuse When a client
# disconnects, the client's threads are put in the cache if there aren't
# more than thread_cache_size threads from before This greatly reduces
# the amount of thread creations needed if you have a lot of new
# connections (Normally this doesn't give a notable performance
# improvement if you have a good thread implementation)
thread_cache_size=64
# MyISAM Specific options
# The maximum size of the temporary file MySQL is allowed to use while
# recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE
# If the file-size would be bigger than this, the index will be created
# through the key cache (which is slower)
myisam_max_sort_file_size=100G
# If the temporary file used for fast index creation would be bigger
# than using the key cache by the amount specified here, then prefer the
# key cache method This is mainly used to force long character keys in
# large tables to use the slower key cache method to create the index
myisam_sort_buffer_size=4M
# Size of the Key Buffer, used to cache index blocks for MyISAM tables
# Do not set it larger than 30% of your available memory, as some memory
# is also required by the OS to cache rows Even if you're not using
# MyISAM tables, you should still set it to 8-64M as it will also be
# used for internal temporary disk tables
key_buffer_size=16M
# Size of the buffer used for doing full table scans of MyISAM tables
# Allocated per thread, if a full scan is needed
read_buffer_size=64K
read_rnd_buffer_size=256K
# This buffer is allocated when MySQL needs to rebuild the index in
# REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE
# into an empty table It is allocated per thread so be careful with
# large settings
sort_buffer_size=256K
# INNODB Specific options
# Use this option if you have a MySQL server with InnoDB support enabled
# but you do not plan to use it This will save memory and disk space
# and speed up some things
#skip-innodb
# Additional memory pool that is used by InnoDB to store metadata
# information If InnoDB requires more memory for this purpose it will
# start to allocate it from the OS As this is fast enough on most
# recent operating systems, you normally do not need to change this
# value SHOW INNODB STATUS will display the current amount used
innodb_additional_mem_pool_size=9M
# If set to 1, InnoDB will flush (fsync) the transaction logs to the
# disk at each commit, which offers full ACID behavior If you are
# willing to compromise this safety, and you are running small
# transactions, you may set this to 0 or 2 to reduce disk I/O to the
# logs Value 0 means that the log is only written to the log file and
# the log file flushed to disk approximately once per second Value 2
# means the log is written to the log file at each commit, but the log
# file is only flushed to disk approximately once per second
innodb_flush_log_at_trx_commit=1
# The size of the buffer InnoDB uses for buffering log data As soon as
# it is full, InnoDB will have to flush it to disk As it is flushed
# once per second anyway, it does not make sense to have it very large
# (even with long transactions)
innodb_log_buffer_size=5M
# InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and
# row data The bigger you set this the less disk I/O is needed to
# access data in tables On a dedicated database server you may set this
# parameter up to 80% of the machine physical memory size Do not set it
# too large, though, because competition of the physical memory may
# cause paging in the operating system Note that on 32bit systems you
# might be limited to 2-35G of user level memory per process, so do not
# set it too high
innodb_buffer_pool_size=32M
# Size of each log file in a log group You should set the combined size
# of log files to about 25%-100% of your buffer pool size to avoid
# unneeded buffer pool flush activity on log file overwrite However,
# note that a larger logfile size will increase the time needed for the
# recovery process
innodb_log_file_size=88M
# Number of threads allowed inside the InnoDB kernel The optimal value
# depends highly on the application, hardware as well as the OS
# scheduler properties A too high value may lead to thread thrashing
innodb_thread_concurrency=8
解决mysql耗内存的具体方法二:
更改后如下:
innodb_buffer_pool_size=576M ->256M InnoDB引擎缓冲区占了大头,首要就是拿它开刀
query_cache_size=100M ->16M 查询缓存
tmp_table_size=102M ->64M 临时表大小
key_buffer_size=256m ->32M
重启mysql服务后,虚拟内存降到200以下
另外mysql安装目录下有几个文件:my-hugeini 、my-largeini、my-mediumini这几个是根据内存大小作的建议配置,新手在设置的时候也可以参考一下。
2G内存的MYSQL数据库服务器 myini优化 (myini)
2G内存,针对站少,优质型的设置,试验特:
table_cache=1024 物理内存越大,设置就越大默认为2402,调到512-1024最佳
innodb_additional_mem_pool_size=8M 默认为2M
innodb_flush_log_at_trx_commit=0 等到innodb_log_buffer_size列队满后再统一储存,默认为1
innodb_log_buffer_size=4M 默认为1M
innodb_thread_concurrency=8 你的服务器CPU有几个就设置为几,默认为8
key_buffer_size=256M 默认为218 调到128最佳
tmp_table_size=64M 默认为16M 调到64-256最挂
read_buffer_size=4M 默认为64K
read_rnd_buffer_size=16M 默认为256K
sort_buffer_size=32M 默认为256K
max_connections=1024 默认为1210
试验一:
table_cache=512或1024
innodb_additional_mem_pool_size=2M
innodb_flush_log_at_trx_commit=0
innodb_log_buffer_size=1M
innodb_thread_concurrency=8 你的服务器CPU有几个就设置为几,默认为8
key_buffer_size=128M
tmp_table_size=128M
read_buffer_size=64K或128K
read_rnd_buffer_size=256K
sort_buffer_size=512K
max_connections=1024
试验二:
table_cache=512或1024
innodb_additional_mem_pool_size=8M
innodb_flush_log_at_trx_commit=0
innodb_log_buffer_size=4M
innodb_thread_concurrency=8
key_buffer_size=128M
tmp_table_size=128M
read_buffer_size=4M
read_rnd_buffer_size=16M
sort_buffer_size=32M
max_connections=1024
一般:
table_cache=512
innodb_additional_mem_pool_size=8M
innodb_flush_log_at_trx_commit=0
innodb_log_buffer_size=4M
innodb_thread_concurrency=8
key_buffer_size=128M
tmp_table_size=128M
read_buffer_size=4M
read_rnd_buffer_size=16M
sort_buffer_size=32M
max_connections=1024
经过测试没有特殊情况,最好还是用默认的
2G内存,针对站多,抗压型的设置,最佳:
table_cache=1024 物理内存越大,设置就越大默认为2402,调到512-1024最佳
innodb_additional_mem_pool_size=4M 默认为2M
innodb_flush_log_at_trx_commit=1
(设置为0就是等到innodb_log_buffer_size列队满后再统一储存,默认为1)
innodb_log_buffer_size=2M 默认为1M
innodb_thread_concurrency=8 你的服务器CPU有几个就设置为几,建议用默认一般为8
key_buffer_size=256M 默认为218 调到128最佳
tmp_table_size=64M 默认为16M 调到64-256最挂
read_buffer_size=4M 默认为64K
read_rnd_buffer_size=16M 默认为256K
sort_buffer_size=32M 默认为256K
max_connections=1024 默认为1210
thread_cache_size=120 默认为60
query_cache_size=64M
优化mysql数据库性能的十个参数
(1)、max_connections:
允许的同时客户的数量。增加该值增加 mysqld 要求的文件描述符的数量。这个数字应该增加,否则,你将经常看到 too many connections 错误。 默认数值是100,我把它改为1024 。
(2)、record_buffer:
每个进行一个顺序扫描的线程为其扫描的每张表分配这个大小的一个缓冲区。如果你做很多顺序扫描,你可能想要增加该值。默认数值是131072(128k),我把它改为16773120 (16m)
(3)、key_buffer_size:
索引块是缓冲的并且被所有的线程共享。key_buffer_size是用于索引块的缓冲区大小,增加它可得到更好处理的索引(对所有读和多重写),到你能负担得起那样多。如果你使它太大,系统将开始换页并且真的变慢了。默认数值是8388600(8m),我的mysql主机有2gb内存,所以我把它改为 402649088(400mb)。
4)、back_log:
要求 mysql 能有的连接数量。当主要mysql线程在一个很短时间内得到非常多的连接请求,这就起作用,然后主线程花些时间(尽管很短)检查连接并且启动一个新线程。
back_log 值指出在mysql暂时停止回答新请求之前的短时间内多少个请求可以被存在堆栈中。只有如果期望在一个短时间内有很多连接,你需要增加它,换句话说,这值对到来的tcp/ip连接的侦听队列的大小。你的 *** 作系统在这个队列大小上有它自己的限制。试图设定back_log高于你的 *** 作系统的限制将是无效的。
当你观察你的主机进程列表,发现大量 264084 | unauthenticated user | xxxxxxxxxxxx | null | connect | null | login | null 的待连接进程时,就要加大 back_log 的值了。默认数值是50,我把它改为500。
(5)、interactive_timeout:
服务器在关闭它前在一个交互连接上等待行动的秒数。一个交互的客户被定义为对 mysql_real_connect()使用 client_interactive 选项的客户。 默认数值是28800,我把它改为7200。
(6)、sort_buffer:
每个需要进行排序的线程分配该大小的一个缓冲区。增加这值加速order by或group by *** 作。默认数值是2097144(2m),我把它改为 16777208 (16m)。
(7)、table_cache:
为所有线程打开表的数量。增加该值能增加mysqld要求的文件描述符的数量。mysql对每个唯一打开的表需要2个文件描述符。默认数值是64,我把它改为512。
(8)、thread_cache_size:
可以复用的保存在中的线程的数量。如果有,新的线程从缓存中取得,当断开连接的时候如果有空间,客户的线置在缓存中。如果有很多新的线程,为了提高性能可以这个变量值。通过比较 connections 和 threads_created 状态的变量,可以看到这个变量的作用。我把它设置为 80。
(9)mysql的搜索功能
用mysql进行搜索,目的是能不分大小写,又能用中文进行搜索
只需起动mysqld时指定 --default-character-set=gb2312
(10)、wait_timeout:
服务器在关闭它之前在一个连接上等待行动的秒数。 默认数值是28800,我把它改为7200。
注:参数的调整可以通过修改 /etc/mycnf 文件并重启 mysql 实现。这是一个比较谨慎的工作,上面的结果也仅仅是我的一些看法,你可以根据你自己主机的硬件情况(特别是内存大小)进一步修改。
英国 EMS 。总体来看,英国 EMS 的税率主要分为三种:增值税(VAT)、关税和商品和服务税(GST)。
增值税(VAT)是英国 EMS 税率的主要组成部分,目前的标准税率是20%,有时可能会略有不同,例如在某些特殊情况下,它可以被调整为5%或0%。EMS(英国境内快递)是指英国国内的快递服务,其税率因商品类型而异。在英国购买商品时,需要支付的税费包括增值税(VAT)、关税和进口税等。一般来说,如果商品的价值超过22英镑(不含运费),则需要缴纳增值税;如果商品的价值超过135英镑,还需要缴纳关税和进口税。具体的税费率和分段情况如下:
1 增值税:对于大部分商品,增值税率为20%,但是对于部分商品(如食品、书籍、报纸等)税率为0%或者5%。
2 关税:关税的税率因商品而异,具体的税率可以在英国政府的关税数据库中查询。
3 进口税:进口税也因商品而异,具体的税率可以在英国政府的进口税数据库中查询。
需要特别注意的是,如果商品的价值超过150英镑,还需要缴纳进口增值税(Import VAT),其税率为20%。因此,在使用EMS进行境内快递时,需要根据商品的类型和价值计算相应的税费,并在收到商品时支付相关费用。
关税(Tariff)是 EMS 的另一项重要税率,关税的标准主要由英国政府决定,关税的计算方式是基于物品的价值,而不是基于价格,而且在英国有很多免税项目,所以很多 EMS 收到的物品不会收取关税。
最后, EMS 的税率还包括商品和服务税(GST),它是由英国政府统一设定的,目前的标准税率是20%,但也可以根据特定情况更改。
在传统能源管理中,企业通常定期派专人对各类仪器、仪表进行现场数据采集,逐级统计、上报。但是这类手工 *** 作效率低,且不能满足大范围数据采集的需求。即使企业建立数据库对数据进行管理,依然不能避免数据不及时甚至不准确的情况的发生。能源管理系统(EMS Energy Management System)是一个集数据采集、过程监控、能源调度为一体的公司级能源管控一体化智能系统。建设EMS的目的就是为了实现能源计量、设备远程监控、优化能源调度和平衡的指挥系统,对能源介质实现在线监视与调控。
利用实时客观的数据帮助管理者编制能源计划、管理能源质量、分析事故原因、处理解决能耗问题,真正实现企业绿色生产的目标。
1、降低企业能耗
通过实时数据采集,自动分析报警,减少跑冒滴漏等现象,降低企业整体能耗。
2、缩短设备保养时间
精确化管理能源设备,实现能源设备整体受控,降低设备点检、运行、维护成本,更好发挥设备整体效能。
3、提升设备运行时间
通过EMS系统数据分析和预警,实现对生产现场的异常情况的实时处理,及时修正和调整,提高设备利用率。
如果是快递单上要打印什么内容?如果是发货人、收货人信息还有条码之类的,可以用领跑条码打印软件不需要加密。这个是专门用来批量打印条码或者是标签的软件,可以先设计好一个ems模板,主要是固定好将发货人, 收件人,条码打印到什么位置上。然后将整理好的发货收件人信息,编导excel表里面或者是您有其他的现成的数据库。导入到领跑条码软件中,对具体的快递单内容进行数据调用后,就可以批量打印了。
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