MySQL,查看连接数和状态等

1、MySQLshow status like ‘%connect%‘;

Connections,试图连接到(不管是否成功)MySQL服务器的连接数。
   Max_used_connections,服务器启动后已经同时使用的连接的最大数量。
   Threads_connected,当前的连接数。

2、mysql> show variables like ‘%connect%‘;

max_connections,最大连接数。

3、修改max_connections

在配置文件(my.cnf或my.ini)在最下面,天加一句:
   max_connections=32000
   然后,用命令重启:/etc/init.d/mysqld restart
   虽然这里写的32000,实际MySQL服务器允许的最大连接数16384;
   添加了最大允许连接数,对系统消耗增加不大。

4、mysql> show processlist;
显示当前正在执行的MySQL连接。

mysql> show status like ‘%connect%‘;
+-----------------------------------------------+-------+
| Variable_name                                 | Value |
+-----------------------------------------------+-------+
| Aborted_connects                              | 2     |
| Connection_errors_accept                      | 0     |
| Connection_errors_internal                    | 0     |
| Connection_errors_max_connections             | 0     |
| Connection_errors_peer_address                | 0     |
| Connection_errors_select                      | 0     |
| Connection_errors_tcpwrap                     | 0     |
| Connections                                   | 445   |
| Max_used_connections                          | 61    |
| Performance_schema_session_connect_attrs_lost | 0     |
| Ssl_client_connects                           | 0     |
| Ssl_connect_renegotiates                      | 0     |
| Ssl_finished_connects                         | 0     |
| Threads_connected                             | 57    |
+-----------------------------------------------+-------+
14 rows in set (0.00 sec)

mysql> show variables like ‘%connect%‘;
+-----------------------------------------------+-----------------+
| Variable_name                                 | Value           |
+-----------------------------------------------+-----------------+
| character_set_connection                      | utf8            |
| collation_connection                          | utf8_general_ci |
| connect_timeout                               | 10              |
| disconnect_on_expired_password                | ON              |
| init_connect                                  |                 |
| max_connect_errors                            | 100             |
| max_connections                               | 151             |
| max_user_connections                          | 0               |
| performance_schema_session_connect_attrs_size | 512             |
+-----------------------------------------------+-----------------+
9 rows in set (0.00 sec)

mysql> show processlist;
+-----+------+---------------------+------+---------+------+-------+------------------+
| Id  | User | Host                | db   | Command | Time | State | Info             |
+-----+------+---------------------+------+---------+------+-------+------------------+
| 315 | srea | 192.168.0.206:58566 | srea | Sleep   | 3370 |       | NULL             |
| 316 | srea | 192.168.0.206:58567 | srea | Sleep   | 3370 |       | NULL             |
| 317 | srea | 192.168.0.206:58568 | srea | Sleep   | 3370 |       | NULL             |
| 318 | srea | 192.168.0.206:58569 | srea | Sleep   | 3370 |       | NULL             |
| 319 | srea | 192.168.0.206:58570 | srea | Sleep   | 3370 |       | NULL             |
| 320 | srea | 192.168.0.206:58572 | srea | Sleep   | 3370 |       | NULL             |
| 321 | srea | 192.168.0.206:58575 | srea | Sleep   | 3370 |       | NULL             |
| 322 | srea | 192.168.0.206:58576 | srea | Sleep   | 3370 |       | NULL             |
| 323 | srea | 192.168.0.206:58577 | srea | Sleep   | 3370 |       | NULL             |
| 324 | srea | 192.168.0.206:58578 | srea | Sleep   | 3370 |       | NULL             |
| 325 | srea | 192.168.0.206:58579 | srea | Sleep   | 3370 |       | NULL             |
| 326 | srea | 192.168.0.206:58581 | srea | Sleep   | 3370 |       | NULL             |
| 327 | srea | 192.168.0.206:58582 | srea | Sleep   | 3370 |       | NULL             |
| 328 | srea | 192.168.0.206:58583 | srea | Sleep   | 3370 |       | NULL             |
| 329 | srea | 192.168.0.206:58586 | srea | Sleep   | 3370 |       | NULL             |
| 330 | srea | 192.168.0.206:58587 | srea | Sleep   | 3370 |       | NULL             |
| 331 | srea | 192.168.0.206:58589 | srea | Sleep   | 3370 |       | NULL             |
| 332 | srea | 192.168.0.206:58590 | srea | Sleep   | 3370 |       | NULL             |
| 334 | srea | 192.168.0.206:59012 | srea | Sleep   | 2920 |       | NULL             |
| 335 | srea | 192.168.0.206:59342 | srea | Sleep   | 2487 |       | NULL             |
| 336 | srea | 192.168.0.206:59343 | srea | Sleep   | 2545 |       | NULL             |
| 337 | srea | 192.168.0.206:59344 | srea | Sleep   | 2545 |       | NULL             |
| 338 | srea | 192.168.0.206:59345 | srea | Sleep   | 2545 |       | NULL             |
| 339 | srea | 192.168.0.206:59346 | srea | Sleep   | 2545 |       | NULL             |
| 340 | srea | 192.168.0.206:59347 | srea | Sleep   | 2545 |       | NULL             |
| 341 | srea | 192.168.0.206:59348 | srea | Sleep   | 2545 |       | NULL             |
| 342 | srea | 192.168.0.206:59349 | srea | Sleep   | 2544 |       | NULL             |
| 343 | srea | 192.168.0.206:59350 | srea | Sleep   | 2544 |       | NULL             |
| 344 | srea | 192.168.0.206:59351 | srea | Sleep   | 2544 |       | NULL             |
| 345 | srea | 192.168.0.206:59352 | srea | Sleep   | 2544 |       | NULL             |
| 346 | srea | 192.168.0.206:59353 | srea | Sleep   | 2544 |       | NULL             |
| 347 | srea | 192.168.0.206:59354 | srea | Sleep   | 2544 |       | NULL             |
| 348 | srea | 192.168.0.206:59355 | srea | Sleep   | 2544 |       | NULL             |
| 349 | srea | 192.168.0.206:59356 | srea | Sleep   | 2544 |       | NULL             |
| 350 | srea | 192.168.0.206:59357 | srea | Sleep   | 2544 |       | NULL             |
| 351 | srea | 192.168.0.206:59358 | srea | Sleep   | 2544 |       | NULL             |
| 353 | srea | 192.168.0.206:59341 | srea | Sleep   | 2503 |       | NULL             |
| 354 | srea | 192.168.0.206:59340 | srea | Sleep   | 2486 |       | NULL             |
| 418 | srea | 192.168.0.206:52115 | srea | Sleep   |  643 |       | NULL             |
| 419 | srea | 192.168.0.206:52140 | srea | Sleep   |  717 |       | NULL             |
| 420 | srea | 192.168.0.206:52145 | srea | Sleep   |  717 |       | NULL             |
| 421 | srea | 192.168.0.206:52148 | srea | Sleep   |  717 |       | NULL             |
| 422 | srea | 192.168.0.206:52151 | srea | Sleep   |  717 |       | NULL             |
| 423 | srea | 192.168.0.206:52154 | srea | Sleep   |  717 |       | NULL             |
| 424 | srea | 192.168.0.206:52157 | srea | Sleep   |  717 |       | NULL             |
| 425 | srea | 192.168.0.206:52159 | srea | Sleep   |  716 |       | NULL             |
| 426 | srea | 192.168.0.206:52160 | srea | Sleep   |  716 |       | NULL             |
| 427 | srea | 192.168.0.206:52161 | srea | Sleep   |  716 |       | NULL             |
| 428 | srea | 192.168.0.206:52164 | srea | Sleep   |  716 |       | NULL             |
| 429 | srea | 192.168.0.206:52167 | srea | Sleep   |  716 |       | NULL             |
| 430 | srea | 192.168.0.206:52169 | srea | Sleep   |  716 |       | NULL             |
| 431 | srea | 192.168.0.206:52172 | srea | Sleep   |  716 |       | NULL             |
| 432 | srea | 192.168.0.206:52175 | srea | Sleep   |  716 |       | NULL             |
| 433 | srea | 192.168.0.206:52179 | srea | Sleep   |  716 |       | NULL             |
| 436 | srea | 192.168.0.206:52114 | srea | Sleep   |  668 |       | NULL             |
| 437 | srea | 192.168.0.206:52112 | srea | Sleep   |  641 |       | NULL             |
| 444 | root | localhost           | NULL | Query   |    0 | init  | show processlist |
+-----+------+---------------------+------+---------+------+-------+------------------+
57 rows in set (0.00 sec)

  

时间: 2024-10-02 10:13:03

MySQL,查看连接数和状态等的相关文章

MySql 查看连接数和状态

如果是root帐号,你能看到所有用户的当前连接.如果是其它普通帐号,只能看到自己占用的连接 怎么进入mysql命令行呢? mysql的安装目录下面有个bin目录,先用命令行进入该目录,然后用 mysql -uroot -p123456 来登录(注意:用户名和密码不用包含"") 命令: show processlist; 如果是root帐号,你能看到所有用户的当前连接.如果是其它普通帐号,只能看到自己占用的连接. show processlist;只列出前100条,如果想全列出请使用sh

MySql状态查看方法 MySql如何查看连接数和状态?

如果是root帐号,你能看到所有用户的当前连接.如果是其它普通帐号,只能看到自己占用的连接 怎么进入mysql命令行呢? mysql的安装目录下面有个bin目录,先用命令行进入该目录,然后用 mysql -uroot -p123456 来登录(注意:用户名和密码不用包含“”) 命令: show processlist; 如果是root帐号,你能看到所有用户的当前连接.如果是其它普通帐号,只能看到自己占用的连接. show processlist;只列出前100条,如果想全列出请使用show fu

Mysql查看连接数相关信息

MySQL查看连接数相关信息在 数据库:INFORMATION_SCHEMA 表:PROCESSLIST 表结构如下: mysql> desc PROCESSLIST; +---------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+-------------+------+-----+---------+-------+ | I

mysql查看连接数排查问题

#mysql查看连接数SHOW VARIABLES LIKE '%max_connections%'; # max_connections 最大连接数 SHOW VARIABLES LIKE '%connection%';# PROCESSLIST; # 通过观察sql来判断.SHOW FULL PROCESSLIST SHOW PROCESSLIST; SHOW STATUS;SHOW PROCESSLIST#show extended-status; SHOW STATUS LIKE '%c

MySQL如何查看连接数和状态

查看连接数 命令:show processlist 如果要是root账号,能够看见当前所有用户的连接.如果是普通账号,只能看到自己占用的连接数. show processlist只能是列出前100条,如果想全列出可以使用show full processlist 查看状态 命令:show status; 命令:show status like '%变量名称%'; Aborted_clients 由于客户没有正确关闭连接已经死掉,已经放弃的连接数量. Aborted_connects 尝试已经失败

Mysql 查看连接数,状态

http://blog.csdn.net/starnight_cbj/article/details/4492555 命令: show processlist; 如果是root帐号,你能看到所有用户的当前连接.如果是其它普通帐号,只能看到自己占用的连接. show processlist;只列出前100条,如果想全列出请使用show full processlist; MySQL> show processlist; 命令: show status; 命令:show status like '%

MySQL查看连接数

1.查看部分连接数(数目较多时) show processlist; 2.查看所有连接数(数目较多时) show full processlist;

Mysql数据库 查看连接数,状态 最大并发数设置

show status like '%max_connections%'; ##mysql最大连接数set global max_connections=1000 ##重新设置show variables like '%max_connections%'; ##查询数据库当前设置的最大连接数 show global status like 'Max_used_connections'; ##服务器响应的最大连接数 show status like 'Threads%'; Variable_nam

如何实时查看mysql当前连接数?

如何实时查看mysql当前连接数?  1.查看当前所有连接的详细资料: ./mysqladmin -uadmin -p -h10.140.1.1 processlist2.只查看当前连接数(Threads就是连接数.): ./mysqladmin  -uadmin -p -h10.140.1.1 status .查看当前所有连接的详细资料: mysqladmin -uroot -proot processlist D:\MySQL\bin>mysqladmin -uroot -proot pro