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Solutions for MySQLserverhasgoneaway

Solve MySQL server has gone away 1. applications (such as PHP) execute MYSQL statements in batches for a long time. The most common is collection or conversion of new and old data.Solution:Add or modify the following two variables in the my. cnf file: The code is as follows: Wait_timeout = 2880000Interactive_timeout = 2880000 For details about the two variables, refer to google or the official manual. If you cannot modify my. cnf, you can set it when connecting

Ext/mysql extension of PHP source code

;Struct charset_info_st * charset;MYSQL_FIELD * fields;MEM_ROOT field_alloc;My_ulonglong affected_rows;My_ulonglong insert_id;/* id if insert on table with NEXTNR */My_ulonglong extra_info;/* Not used */Unsigned long thread_id;/* Id for connection in server */Unsigned long packet_length;Unsigned int port;Unsigned long client_flag, server_capabilities;Unsigned int protocol_version;Unsigned int field_count;Unsigned int server_status;Unsigned int server_language;Unsigned int warning_count;Struct st

"MySQL case" Error.log warning:if a crash happens thisconfiguration does not guarantee that the relay LO

file, Master.info Mysql.slave_master_info SHOW SLAVE STATUS Column Description 1 Number_of_lines [None] Number of lines in the file 2 Master_log_name Master_log_file The name of the master binary log currently being read from the master 3 Master_log_pos Read_master_log_pos The current position within the master binary log that has been read from the master 4 Hos

Boost.asio Packaging Class St_asio_wrapper development tutorial (2014.5.23 Update) (i)-----turn

(client)client directly include St_asio_wrapper_client.h, you can implement a simple client, as follows:[CPP]View Plaincopy //configuration #define SERVER_PORT 9527 #define Force_to_use_msg_recv_buffer//force to use the MSG RECV BUFFER //configuration #include "st_asio_wrapper_client.h" using namespace st_asio_wrapper; #define Quit_command "QUIT" #define Restart_command "RESTART" #define Reconnect_command "Reco

MongoDB (AutoSharding + Replicationsets stability test)

The stability has been improved. If 162,163,164 of any Server is disconnected, Mongos can automatically reconnect one of its vote Members primary. The stability has been improved. If 162,163,164 of any Server is disconnected, Mongos can automatically reconnect one of its vote Members primary. Single Replication sets design: , 10.9.3.228, only Mongos and config services are started.Note: The ip addr

Using Rxnetty on Android

mConnection.writeString(Observable.just(s)); }To test the client code for the method above: Public void rxnettyclienttest() {Connect ("localhost",60000). Subscribe (NewObserver@Override Public void oncompleted() { }@Override Public void OnError(Throwable e) {//reconnectObservable.timer (1, timeunit.seconds). Subscribe (NewAction1@Override Public void Pager(Long along) {if(Mconnection! =NULL) Mconnection.closenow (); Rxnettyclienttest (); } }); System.out.printl

ORA-12545: Connection failed because the target host or object does not exist

Method/Step 1For example, the error message that may occur when we run Oracle ORA-12545: The connection failed because the target host or object does not exist 2Workaround:First, start with the basics, right-click on the computer, select Manage 3Find the services and applications inside, open the service 4As shown ~ found:Oracleoradb11g_home1tnslistenerOracleserviceorcl 5Start these two data services, this is the most basic 6Once the data service is started,

Hadoop Development Environment Building

configuration is correct, check the configuration if you see "Deny Connection".4.3 First map/reduce ProjectCreate a new Map/reduce project and copy the Wordcount.java in example to the new project. First write a data input file, as follows:Create the/tmp/workcount directory on HDFs with the command of Hadoop, with the following command:Hadoop Fs-mkdir/tmp/wordcountCopy the newly created Word.txt to HDFs with the copyfromlocal command as follows:Hadoop fs-copyfromlocal/word.txt /tmp/wordcount/w

Redis-cluster cluster "Fourth": Redis-cluster cluster configuration

, which is an important configuration option for Redis clusters:* For most Parties, if a primary node fails to reconnect to the cluster within the time limit set by the node timeout, the cluster will consider the primary node as offline and use the slave node instead of the master node to continue working.* For a few, if a primary node fails to reconnect to the cluster within the time limit set by the node

Technology sharing: The entry posture for WiFi fishing

-C2wlan5 11th Step:Check the resulting window of the fifth step, the new AP access point should be visible:12th Step:Now, we have to provide this fake wireless AP to the network. Open the terminal and enter the following command in turn:· Ifconfig at0 192.168.1.1 netmask 255.255.255.0 Ifconfig at0 MTU 1400 · Route add-net 192.168.1.0 netmask 255.255.255.0 GW 192.168.1.1 iptables–Flush iptables–Table nat–Flush iptables–delete-Chain iptables–Table nat–delete-Chain Echo1 >/proc/Sys/net/ipv4/ip_forw

Zookeeper automatic re-registration and test method for registered node

regContent) {this.zkRegPathPrefix = zkRegPathPrefix;this.regContent = regContent;}@Overridepublic void stateChanged(CuratorFramework curatorFramework, ConnectionState connectionState) {if (connectionState == ConnectionState.LOST) {while (true) {try {if (curatorFramework.getZookeeperClient().blockUntilConnectedOrTimedOut()) {curatorFramework.create().creatingParentsIfNeeded().withMode(CreateMode.EPHEMERAL_SEQUENTIAL).forPath(zkRegPathPrefix, regContent.getBytes("UTF-8"));break;}} catch (Interrup

Build,rebuild. Deploy ... process

the project. If The project was previously built and incremental deployment specified (there are a option ' Deploy changes only ') for the Active configuration, Business Intelligence development Studio would also build an XML file containing the ASSL commands T o Perform an incremental update to the deployed objects. This XML file was written to the. \obj\rebuild. http://msdn.microsoft.com/en-us/library/ms365398 (sql.90). aspx3) What is the differences between Refresh vs.

"Go" ZooKeeper Session timeout

; Rwserveraddress = null; } else {addr = Hostprovider.next (1000); } Log.info ("Opening socket connection to server" + addr); SetName (GetName (). replaceall ("\ \ *\\", "(" + addr.gethostname () + ":" + addr.getport () + ")"); try {zookeepersaslclient = new zookeepersaslclient ("zookeeper/" +addr.gethostname ()); } catch (Loginexception e) {Log.warn ("SASL Authentication failed:" + E + "would continue connection to Zookeeper Server without "+" SASL authentication, if

rabbitmq4--after the post-forget and RPC

) {System.out.println (" [.] " +e.tostring ()); Response= ""; } finally{channel.basicpublish ("", Props.getreplyto (), Replyprops, Response.getbytes ("UTF-8")); Channel.basicack (Delivery.getenvelope (). Getdeliverytag (),false); } } } Catch(Exception e) {e.printstacktrace (); } finally { if(Connection! =NULL) { Try{connection.close (); } Catch(Exception ignore) {}}} }}View CodeSlightly differentThe traditional RPC call client and server are tightly de

Reading notes-"Hacker Exposure" (5/8)

to cover only a limited area.8.3.2 eavesdropping on wireless communication dataThwart wireless eavesdroppingImplement 802.11-layer encryption and use corner high-level encryption to improve protection levels.8.4 Denial of Service attacksEliminate authentication attacksImpersonate a "de-authenticated" data frame from the client to the access point, in turn impersonating the access point to the client's "de-authenticated" data frame.Prevent authentication attacks from being eliminatedCreating a c

ODAC (V9.5.15) study notes (i) General

data buffering to the client, you can disconnect from the server to reduce the cost of Oracle server resources, all operations in local memory, when the need to submit data to reconnect the Oracle server.4. Supports local indexing and filtering of all data types, including calculated fields and lookup fields.5, automatic data update, including ODAC automatically generated update SQL or custom SQL, can be automatically submitted to the database server

No further queries can be made after using stored procedures in the CI framework

Mysql_escape_ String changed to Mysql_real_escape_string, also the same, reported mysql_real_escape_string error. ############################################## Great God solver!!! Ci Xiao Bai Reply to discussion (solution) The MySQL extension must disconnect the database after the stored procedure is executed and reconnect before you canSo MySQL is behind, to be eliminated.You can use MYSQLI or PDO extensions instead After changing the r

Sysbench introduction and use

the result, you can still use 0.4. If anyone finds the way to view the oltp parameters in version 0.5, please let us know. In addition, although versions 0.5 and 0.4 are different, the parameters are basically compatible ): ~ $ Sysbench -- test = oltp helpSysbench 0.4.12: multi-threaded system evaluation benchmark Oltp options:-- Oltp-test-mode = STRING test type to use {simple, complex, nontrx, sp} [complex]-- Oltp-reconnect-mode = STRING

LOG4J 2.0 advanced usage in Development-socketappender remote output (v)

server name and port number), and the data can be sent in any specified format via TCP or UDP protocol.The more important parameters in Socketappender are:⑴host,string, specifies the host name of the server. Required⑵immediateflush,boolean, whether to flush immediately, or wait for the cache to a certain size after flush.⑶layout,layout,log The format of the event output.⑷port,integer, the port number of the application of the remote server firm log event.⑸protocol,string, the protocol used to s

Investigate issues of real time interrupted

O.a.s.s.o.a.c.f.s.connectionstatemanager Thread-23-$ Mastercoord-bg1-executor[2 2]-eventthread [INFO] State change:reconnected2018-09-26 06:34:35.787 O.a.s.s.o.a.z.clientcnxn Main-sendthread (ip-10-9-248-97.us-west-2.compute.internal:2181) [INFO] Opening socket Connection to server ip-10-9-248-97.us-west-2.compute.internal/10.9.248.97:2181. Won't attempt to authenticate using SASL (unknown error) 2018-09-26 06:34:35.787 o.a.s.s.o.a.z.clientcnxn Main-sendthre AD (ip-10-9-248-97.us-west-2.compute

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