many concurrent smtp connections

The Oracle database cannot be connected, and related errors are prompted.OERR: ORA-12519 TNS: no appropriate service handler foundClient Connection intermittent failure, error ORA-12519Cause: the listener cocould not find any available service handlers that areAppropriate for the client connection.Action: run "lsnrctl services" to ensure that the instance (s) have registeredWith the listener, and are accepting connections. Check the lsnrctl service an

How to modify the maximum number of mysql concurrent connections does not matter to MySQL. It mainly depends on the system and business logic. Method 1: Go to the MySQL installation directory and open the MYSQL configuration file my. ini or my. cnf query max_connections = 100 modify to max_connections = 1000 restart MYSQL in the service to www.2cto.com Method 2: the maximum number of

Analysis of the low memory problem of Oracle with large concurrent connections under Linux 2010-01-28 20:06:21 Category: OracleA recently installed Rhel5.3 40G memory machine has an Oracle database, the database's SGA is set to 20G, when running a business, when a business peak, found swap frequent exchange, CPU 100%,load is very high, the basic embodiment of memory shortage. The number of

This article describes how to limit the number of concurrent connections to a server with echoserver that are familiar to you. The code for this article is shown in http://code.google.com/p/muduo/source/browse/trunk/examples/maxconnection/ The sixth article in the "Muduo Network programming Example series" was originally "Pingpong program for testing the bandwidth of two machines", and the Pingpong protoc

1. View the number of Nginx running processes [Root@iz28j69c9oxz logs]# Ps-ef | grep Nginx | Wc-l 10 2. View the number of Web server process connections [Root@iz28j69c9oxz logs]# NETSTAT-ANTP | grep 80 | grep established-c 1 3. view the number of MySQL process connections [Root@iz28j69c9oxz logs]# Ps-ef | grep mysqld-c3 The above describes the CENTOS65 view Nginx

How to modify the maximum number of mysql concurrent connections (connections) bitsCN.com How to modify the maximum number of mysql concurrent connections The maximum number of MySQL connections does not matter with MySQL. it ma

View the number of concurrent connections in linux.1. view the number of concurrent requests and TCP connection status of the Web server (Nginx Apache: Netstat-n | awk '/^ tcp/{++ S [$ NF]} END {for (a in S) print a, S [a]}' Netstat-n | grep ^ tcp | awk '{print $ NF}' | sort-nr | uniq-cOr:Netstat-n | awk '/^ tcp/{++ state [$ NF]} END {for (key in state) print k

Label:Enter the following command: /usr/local/mysql/bin/mysqladmin-uroot-pyyyyyy variables |grep max_connections Nano/etc/my.cnf max_connections=200 Service MySQL Restart The maximum number of concurrent connections in MySQL modification method as long as in the my.cnf file plus find max_connections or modify the Max_connections reference can be, the larger the parameter later is the concurrency of the gre

In recent development, it has always been found that a large number of users will inevitably die, or the user will directly drop the line. I don't know why, because the project uses netTcp binding, conjecture may be about concurrent connections. So I checked: In Windows 7, the default number of concurrent connections i

The method of limiting concurrent TCP connections of a single IP address is applicable to various TCP services on Linux. Iplimit patch in patch-O-Matic is implemented, which is common for various TCP services. Practice: Configure the Linux core, use 2.4.20, and use Patch-o-matic in www.netfilter.org Iplimit in the base patch. Compile the configuration to install the new core. Use iptables 1.2.8 of www.

View the number of TCP concurrent connections in apache-Linux Enterprise Application-Linux server application information. The following is a detailed description. A group of Apache servers have been built over the past two days. Each server has 4 GB of memory and adopts the prefork mode. The number of connections set at the beginning is too small, it took a long

concurrent connections. 1. Install the configuration process:[[email protected] tools] #wget http://blog.s135.com/soft/linux/webbench/webbench-1.5.tar.gz# Telecom Network download no problem, mobile network cannot download[Email protected]]# tar zxfv webbench-1.5.tar.gz[1. Installation configuration process:[[email protected] tools] #wget http://blog.s135.com/soft/linux/webbench/webbench-1.5.tar.gz# Teleco

1. View the number of concurrent requests for the Web server (Nginx Apache) and its TCP connection status:Netstat-n | awk '/^tcp/{++s[$NF]} END {for (a in S) print A, s[a]} 'Or:Netstat-n | awk '/^tcp/{++state[$NF]} END {for (key in) print key, "T", State[key]} 'The returned results are generally as follows: Last_ack 5 (number of requests waiting to be processed)SYN_RECV 30Established 1597 (normal data transfer status, can be understood as cl

BKJIA Summary: in the previous article, we saw the performance optimization of the DB2 utility. This time we will focus on the performance considerations for the DB2 concurrent connection. In general, when the number of connections is small, the performance of db2 will be relatively stable. At this time, the connected application generates fewer requests than the coordination proxy in the db2 proxy pool. In

1, Nginx View the number of concurrent connections There are two ways, one is configured in the Nginx.config file and then viewed through the browser, the other is the use of the command, I use the Windows for use, so the use of the browser is more convenient. location/status {stub_status on;access_log logs/status.log;auth_basic "Nginxstatus";} Add the above code to the server and enter it in th

processes in the database has reached the size of the parameter processes. 1.select Count (*) from v$process; Gets the current number of processes for the database. 2.select value from V$parameter where name = ' processes '; Gets the upper limit of the number of processes. 3. If the ceiling has been reached, modify the size of the processes in the Initsid.ora. 4. Restart the database to the Nomount state, execute the Create SPFile from Pfile; and startup Open. The maximum number of

connection threads to improve system processing performance with default value of 10Maxprocessors: Maximum number of connection threads, that is, the maximum number of requests that are processed concurrently, with a default value of 75Acceptcount: The maximum number of connections allowed, the wait queue, that specifies the number of requests that can be placed in the processing queue when all available processing requests are used, and requests tha

View the number of concurrent connections and connection status of Nginx, etc. under Linux.1. View the number of concurrent requests for the Web server (Nginx Apache) and its TCP connection status:Netstat-n | awk '/^tcp/{++s[$NF]} END {for (a in S) print A, s[a]} ' or:Netstat-n | awk '/^tcp/{++state[$NF]} END {for (key in state) print key, "T", State[key]} ' retu

: Bandwidthmodule onForcebandwidthmodule onBandwidth all 10000 #限速10KMinbandwidth ALL-1 Configuration parameters are described as follows:A. Bandwidthmodule on| Off Whether to turn on the MOD_BW bandwidth throttling feature. B. bandwidth [from] [BYTES/S] Sets the maximum bandwidth for the specified client, 0 means no Limit Bandwidth u:[user-agent] [BYTES/S] C. minbandwidth [from] [BYTES/S] Sets the minimum value for the specified client bandwidth, 0 for each client bandwidth maximum of 256bytes/

connections supported by IIS 7In the Hkey_local_machine\system\currentcontrolset\services\http\parameters section, change the default number of connections to 5000 to 100000.In addition, for large concurrent processing of databases, see the following information:Http://msdn.microsoft.com/zh-cn/library/aa0416cz.aspxhttp://blog.csdn.net/fhzh520/article/details/775