出现错误com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败
[英]Getting Error com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
问题描述
I have some data migration scripts ( shell scripts generated from talend data migration tool) which connects to MySQL and perform some operations. 
我有一些数据迁移脚本（从talend数据迁移工具生成的shell脚本）可以连接到MySQL并执行一些操作。
One of the script is performs heavy calculations and make lockups from when i execute it on my local machine it completes in around 2.5 hours,and the connection made to MySQL stays in sleep mode 脚本之一是执行大量计算并从我在本地计算机上执行该脚本起进行锁定，该脚本在大约2.5小时内完成，并且与MySQL的连接保持睡眠状态
From MySQL Processlist 从MySQL Processlist
mysql> show processlist;
+-------+------+---------------------+-------------------+---------+------+-------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+-------+------+---------------------+-------------------+---------+------+-------+------------------+
| 10631 | root | localhost | psdata_psdatabase | Sleep | 18 | | NULL |
| 11195 | root | localhost | psdata_psdatabase | Sleep | 5497 | | NULL |
| 11261 | root | localhost | psdata_psdatabase | Query | 0 | NULL | show processlist |
| 11492 | root | 192.168.9.213:56507 | psdata_psdatabase | Sleep | 5509 | | NULL |
| 11493 | root | 192.168.9.213:56508 | psdata_psdatabase | Sleep | 5508 | | NULL |
+-------+------+---------------------+-------------------+---------+------+-------+------------------+
5 rows in set (0.00 sec)
The Threads from 192.168.9.213 are of that script. 192.168.9.213中的线程属于该脚本。
But when i execute same script on production/staging, I am getting error after around 1 hour, And I also don't see any activity in MySQL Processlist in that one hour as there were connections in sleep mode on my local machine 但是当我在生产/暂存中执行相同的脚本时，大约一小时后出现错误，并且那一小时我也没有看到MySQL Processlist中的任何活动，因为本地计算机上处于睡眠模式
"com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure"
Stack Trace 堆栈跟踪
[root@host5 /home/talend/PharmaSecure_psData_localhost/execute_analysis_jobs]# sh execute_analysis_jobs_run.sh
Analysis Started
Started psVerify_interaction_analysis
Ended psVerify_interaction_analysis
Started psVerify_interaction_analysis_p2
Exception in component tMysqlOutput_1
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 3,350,869 milliseconds ago. The last packet sent successfully to the server was 31 milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1117)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3851)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2471)
at com.mysql.jdbc.MysqlIO.disableMultiQueries(MysqlIO.java:3771)
at com.mysql.jdbc.PreparedStatement.executePreparedBatchAsMultiStatement(PreparedStatement.java:1675)
at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1463)
at pharmasecure_ps.psverify_interaction_analysis_p2_0_1.psVerify_interaction_analysis_p2.tMysqlInput_1Process(psVerify_interaction_analysis_p2.java:3576)
at pharmasecure_ps.psverify_interaction_analysis_p2_0_1.psVerify_interaction_analysis_p2.tMysqlInput_6Process(psVerify_interaction_analysis_p2.java:1196)
at pharmasecure_ps.psverify_interaction_analysis_p2_0_1.psVerify_interaction_analysis_p2.tJava_1Process(psVerify_interaction_analysis_p2.java:687)
at pharmasecure_ps.psverify_interaction_analysis_p2_0_1.psVerify_interaction_analysis_p2.runJobInTOS(psVerify_interaction_analysis_p2.java:7365)
at pharmasecure_ps.psverify_interaction_analysis_p2_0_1.psVerify_interaction_analysis_p2.runJob(psVerify_interaction_analysis_p2.java:7207)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tRunJob_1Process(psVerify_interaction_analysis.java:4911)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tJava_2Process(psVerify_interaction_analysis.java:4806)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_8Process(psVerify_interaction_analysis.java:4719)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_6Process(psVerify_interaction_analysis.java:2821)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_5Process(psVerify_interaction_analysis.java:1541)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_9Process(psVerify_interaction_analysis.java:6433)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tJava_1Process(psVerify_interaction_analysis.java:5924)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.runJobInTOS(psVerify_interaction_analysis.java:6652)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.runJob(psVerify_interaction_analysis.java:6494)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_4Process(execute_analysis_jobs.java:1174)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_1Process(execute_analysis_jobs.java:838)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tJava_1Process(execute_analysis_jobs.java:682)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.runJobInTOS(execute_analysis_jobs.java:2749)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.main(execute_analysis_jobs.java:2596)
Caused by: java.net.SocketException: Broken pipe
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3832)
... 23 more
Exception in component tRunJob_1
java.lang.RuntimeException: Child job running failed
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tRunJob_1Process(psVerify_interaction_analysis.java:4932)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tJava_2Process(psVerify_interaction_analysis.java:4806)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_8Process(psVerify_interaction_analysis.java:4719)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_6Process(psVerify_interaction_analysis.java:2821)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_5Process(psVerify_interaction_analysis.java:1541)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tMysqlInput_9Process(psVerify_interaction_analysis.java:6433)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.tJava_1Process(psVerify_interaction_analysis.java:5924)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.runJobInTOS(psVerify_interaction_analysis.java:6652)
at pharmasecure_ps.psverify_interaction_analysis_0_1.psVerify_interaction_analysis.runJob(psVerify_interaction_analysis.java:6494)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_4Process(execute_analysis_jobs.java:1174)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_1Process(execute_analysis_jobs.java:838)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tJava_1Process(execute_analysis_jobs.java:682)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.runJobInTOS(execute_analysis_jobs.java:2749)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.main(execute_analysis_jobs.java:2596)
Exception in component tRunJob_4
java.lang.RuntimeException: Child job running failed
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_4Process(execute_analysis_jobs.java:1195)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_1Process(execute_analysis_jobs.java:838)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tJava_1Process(execute_analysis_jobs.java:682)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.runJobInTOS(execute_analysis_jobs.java:2749)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.main(execute_analysis_jobs.java:2596)
Exception in component tSendMail_2
javax.mail.AuthenticationFailedException: failed to connect
at javax.mail.Service.connect(Service.java:322)
at javax.mail.Service.connect(Service.java:172)
at javax.mail.Service.connect(Service.java:121)
at javax.mail.Transport.send0(Transport.java:190)
at javax.mail.Transport.send(Transport.java:120)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tSendMail_2Process(execute_analysis_jobs.java:1433)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_4_onSubJobError(execute_analysis_jobs.java:508)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.tRunJob_4_error(execute_analysis_jobs.java:384)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs$TalendException.printStackTrace(execute_analysis_jobs.java:330)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs$TalendException.printStackTrace(execute_analysis_jobs.java:318)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs$TalendException.printStackTrace(execute_analysis_jobs.java:318)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.runJobInTOS(execute_analysis_jobs.java:2755)
at pharmasecure_ps.execute_analysis_jobs_0_1.execute_analysis_jobs.main(execute_analysis_jobs.java:2596)
1 个解决方案
解决方案1
1 2014-01-15 14:15:11
Check the value of the wait_timeout variable on your mysql servers. 检查您的mysql服务器上的wait_timeout变量的值。 The value of the variable could be too low on your production server. 在生产服务器上，变量的值可能太低。
To show the value type this command : 要显示值，请输入以下命令：
SHOW VARIABLES LIKE 'wait_timeout'
Set the same value in your local server as the production to see if you can reproduce the problem. 在本地服务器中与生产服务器设置相同的值，以查看是否可以重现该问题。 If the problem can be reproduced, you may have to increase the value of the wait_timeout on your production server. 如果问题可以重现，则可能必须增加生产服务器上的wait_timeout的值。
http://dev.mysql.com/doc/refman/5.0/en/server-system-variables.html#sysvar_wait_timeout http://dev.mysql.com/doc/refman/5.0/en/server-system-variables.html#sysvar_wait_timeout
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.
相关问题
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败？ - com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure?
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败 - com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
AWS RDS连接数据库错误：com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败 - AWS RDS connection database error : com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
错误：com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败 - Error : com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败和BeanEntityManager错误 - com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure AND BeanEntityManager error
MySQL：间歇性com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败 - MySQL: Intermittant com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
eclipe：间歇性com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败 - eclipe: Intermittent com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
“com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败”到远程数据库 - “com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure” to remote database
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败 - 由：java.net.UnknownHostException：null：未知错误 - com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - Caused by: java.net.UnknownHostException: null: unknown error
Travis CLI 上的 Spring Boot 测试失败，出现异常：com.mysql.jdbc.exceptions.jdbc4.CommunicationsException：通信链接失败 - Spring Boot Test Fails on Travis CLI with an exception: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
相关标签