I am getting this error (not so frequently):
2013-05-08 16:44:35,786 WARN (JDBCExceptionReporter.java:100) [org.hibernate.util.JDBCExceptionReporter, logExceptions] - SQL Error: 0, SQLState: 08S01
2013-05-08 16:44:35,786 ERROR (JDBCExceptionReporter.java:101) [org.hibernate.util.JDBCExceptionReporter, logExceptions] - Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
2013-05-08 16:44:35,833 ERROR (AdminDaoImpl.java:297) [com.myapp.admin.db.AdminDaoImpl, createFilePackage] - data-upload: Exception while adding new file package
org.hibernate.exception.JDBCConnectionException: Cannot open connection
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:85) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1354) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
at com.myapp.admin.db.AdminDaoImpl. createFilePackage(AdminDaoImpl.java:182) [AdminDaoImpl.class:na]
at com.myapp.admin.ctrl.UploadController.processUploadZip(UploadController.java:217) [UploadController.class:na]
at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source) [na:na]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [na:1.6.0_35]
at java.lang.reflect.Method.invoke(Method.java:597) [na:1.6.0_35]
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212) [spring-web-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) [spring-web-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) [servlet-api.jar:na]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) [servlet-api.jar:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) [catalina.jar:7.0.35]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.35]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) [catalina.jar:7.0.35]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) [catalina.jar:7.0.35]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) [catalina.jar:7.0.35]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) [catalina.jar:7.0.35]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) [catalina.jar:7.0.35]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) [catalina.jar:7.0.35]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) [catalina.jar:7.0.35]
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200) [tomcat-coyote.jar:7.0.35]
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) [tomcat-coyote.jar:7.0.35]
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) [tomcat-coyote.jar:7.0.35]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_35]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_35]
at java.lang.Thread.run(Thread.java:662) [na:1.6.0_35]
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
I have two web (spring mvc + hibernate + mysql) applications hosted on shared server:
1) main app to show files for download (which is inserted through admin app)
2) admin app with CRUD operations
This error appears sometime, when I am using «admin» application to upload files for «main» app, lets say may be after successfully uploading/processing around 100-120 files/requests and on each request hitting database with 10-20 insert/update queries.
Hosting Details:
Private tomcat hosting
java 1.6.0_35-b10
tomcat 7.0.35
heap size 288MB
MySQL Server 5
commons-dbcp 1.2.2
mysql-connector-java 5.1.9
Database + Hibernate + DBCP properties:
<bean id="dbDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="username" value="test" />
<property name="password" value="test" />
<property name="url" value="jdbc:mysql://localhost/my_database?useUnicode=yes&characterEncoding=UTF-8" />
<!-- DBCP Connection Pool Settings -->
<property name="defaultAutoCommit" value="true" />
<property name="initialSize" value="10" />
<property name="maxActive" value="500" />
<property name="maxIdle" value="8" />
<property name="minIdle" value="0" />
<property name="maxWait" value="30000" />
<property name="validationQuery" value="SELECT 1" />
<property name="testOnBorrow" value="true" />
<property name="testOnReturn" value="false" />
<property name="testWhileIdle" value="false" />
<property name="timeBetweenEvictionRunsMillis" value="-1" />
<property name="numTestsPerEvictionRun" value="3" />
<property name="minEvictableIdleTimeMillis" value="180000" />
<property name="poolPreparedStatements" value="true" />
<property name="maxOpenPreparedStatements" value="25" />
<property name="accessToUnderlyingConnectionAllowed" value="false" />
<property name="removeAbandoned" value="false" />
<property name="removeAbandonedTimeout" value="300" />
<property name="logAbandoned" value="false" />
</bean>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.hbm2ddl.auto=none
hibernate.jdbc.batch_size=100
hibernate.show_sql=false
hibernate.format_sql=false
hibernate.cache.use_second_level_cache=true
hibernate.cache.use_query_cache=false
hibernate.cache.provider_class=org.hibernate.cache.NoCacheProvider
hibernate.current_session_context_class=thread
Concerned Code:
public String createFilePackage(FilePackage package) {
String message = "";
Session session = getSessionFactory().openSession();
Transaction tx = null;
try {
tx = session.beginTransaction();
// handling package, around 10-14 DB insert, 10 SELECT and 5 update queries on same session
tx.commit();
} catch(Exception e) {
logger.error("file-upload: Exception while adding new font package", e);
if(tx != null) { tx.rollback(); }
} finally {
session.close();
}
return message;
}
any advise how to solve this issue?
Это сообщение в блоге было создано, чтобы помочь вам в случае возникновения odbc sqlstate подразумевает ошибку 08s01.Microsoft описывает всю причину отказа соединения SQLState 08S01 как ошибку, которая возникает, когда соединение между транспортным средством и корнем данных, к которому был подключен наш собственный драйвер, было неудачным до обработки задачи.
Так случилось, что недавно у нас были проблемы с потерей сети в каждой из наших компаний с SQLSTATE, что означает концепцию ошибки 08S01 или SQLSTATE = 08001. Нам нужно несколько сотрудников, которые запускают приложения, подключаемые к клиентским системам, которые будут помогать, а затем извлекать данные. Одна из наших компаний и клинеров имеет клиентскую базу сервера Microsoft MySQL. Однако хост mySQL и другое устройство, с которым общаются клиенты, создают проблемы с сетью. Если они подключены напрямую, то есть к серверу через подключение к удаленному рабочему столу, скорее всего, проблем с сетью не будет, что необычно, поскольку они всегда подключаются к серверу через какой-то тип сети. Либо эти концепции, проблемы точно не возникают по какой-то конкретной причине, они все случайны и неожиданны. Иногда мы можем прожить эти дни без каких-либо проблем, в то время как в другое время у нас возникают проблемы каждый час или несколько условий в день.
Серверные операционные системы: 64-разрядная версия Windows 2008 R2 SP1, в которой есть все обновления, включая все корпоративное обновление 2775511. http: и / support.microsoft .org / kb / 2775511
Клиентские ПК: 64-разрядная версия Windows 7 с пакетом обновления 1 (SP1) во всех обновлениях, включая накопительное обновление 2775511 для бизнеса. http: / / support.microsoft.com/ kb / 2775511
Используемое телевизионное оборудование: коммутатор Dell PowerConnect 5324 (главный коммутатор), коммутатор Cisco sf200-24p (много в компании), точка доступа Netgear WNDAP660 (основная точка доступа), SonicWall 210 tz (основной межсетевой экран)
Вторичное расположение DNS: второй сервер, на котором размещены другие компьютерные приложения, которым известно, что наши клиенты подключаются.
- Брандмауэр Windows отключен во всех системах
- Все функции энергосбережения системы, в том числе сетевая карта, часто отключены.
- Проверил конфигурацию DHCP и убедился, что все действительно правильно настроено.
- Убедитесь, что нет конфликтов в IP-адресах или странной аренды IP-адресов.
- Может загружаться из nslookup обоими методами с IP или именем системы. (Однако, если есть разница, серверы недоступны, более того, с ними вы даже не можете пинговать их.)
- Проверены контактные штыри и заменены все сетевые кабели, отвечающие самым высоким требованиям к серверам и ключевым точкам. (Поскольку раздражение исходит от всей компании, я вполне уверен, что это не все кабели, но, скорее всего, кабели, идущие обратно к серверу, на котором размещено мое устройство DHCP, на котором может быть разорвано кабельное соединение, просто вот так, это не т. помогло)
- Пробовал один раз и выполнил все шаги, описанные в этой рекламной статье, благодаря Microsoft: http: / за support.microsoft.com/ kb и < wbr> 942861
- Все точки доступа и серверы, компьютерные принтеры получают свои собственные статические IP-адреса, и, как видите, на лучших клиентских ПК включена аренда DHCP.
- Проверьте конфигурацию DNS человека, и все в порядке. (Возможно, я что-то не упустил)
- Системные ресурсы действительно проверены, и мы производим много ресурсов, включая оставшиеся ресурсы, и сетевой оператор не должен перегружать сетевой трафик.
- К сожалению, депутат по поводу выключателей, к которым они подключены, наверное, проблему не решил.
- Подключается к небольшому количеству систем непосредственно к главному элементу управления, к которому подключены серверы, чтобы гарантировать, что другие коммутаторы, которые мы предлагаем у поставщика услуг, могут быть неисправными, хотя все еще существуют препятствия в системах, ближайших к хосту.
- Я рискнул на многое, но пока не помню, чтобы отдыхал.
Любая помощь должна быть оценена по достоинству. Пожалуйста, дайте мне знать, если вам понадобятся другие вопросы, чтобы помочь решить этот вопрос. Эта проблема существует уже несколько месяцев, и, как следствие, мы просто не можем понять, что может вызвать эту проблему. Спасибо заранее!
v <время>
г.
- Remove From My Forums
-
Question
-
I’m getting this error in a VMWare ESX environment. The application establishes a new connection for each transaction (yes, I know that’s not a good idea) but subsequent transactions generally succeed after I get a few of these failures.
I’m opening a support incident with VMWare, since it doesn’t seem to occur in a non-virtual environment, but I thought I’d post here too in case someone has seen something similar.
Thanks for your help,
Martin
All replies
-
We’re seeing the same thing as we’re supporting a company that runs an application that creates a new connection for each command.
Their hardware setup is a Dell 1800 w/Dual 3GHz Xeons and raid array, connected to a Cisco 2948 catalyst switch for network.
The database is running the 2005 version of msde… SQL Express i believe.
A host of errors they get… at least a few times a day
Error: 08S01 — Communication link failure
Error: 01000 — ConnectionWrite (send())
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I have the same issue. Got any solution.
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I have the same issue at around 1400 connections to SQL. Any resolution?
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We have the same errors.. «Communication link failure» often preceeded by the «ConnectionWrite(send())» error. This is on a 3rd party application so we don’t know the internals of how it functions. Suspect that it likewise creates a new connection for each command but not really sure.
The application runs on multiple app servers and they connect to a dedicated database server.
Database server is 64 bit Server 2003 with 64 bit SQL 2005, 4 dual core processors, and 16 GB RAM.
We have looked at almost everything and cannot isolate the problem or find a solution.
Any suggestions would be appreciated.
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I’ve got a customer with the same issue. They are the only customer I have running the queries over the WAN.
I had one example where trying to connect to one SQLServer server I got the message. Trying to connect to another server, did not get the problem. Rebooting the client machine solved (and typically solves) this problem.
If anyone has info on this, it would be greatly appreciated. Doesn’t look like this question’s getting much attention.
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I got a similar message. I’m working on a VM and it says OLE DB error: OLE DB or ODBC error: Communication link failure; 08S01; Shared Memory Provider: No process is on the other end of the pipe.
; 08S01.When I try to process an Analysis Services cube.
Any ideas anyone?
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Same here, please respond if there is any available solution.
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I have an application that uses ADO to create recordsets on the fly and throw them away after reading data, using one connection object.
If used on a local
SQL Server 2005, the communication link failure occures when network connection broke down between two uses of recordsets. The temporary disrupted network connection (eg. WLAN) has nothing to do with the communication between application and server (local), and the connection is not broken at the time the error occures. This can be reproduced by temporary disconnecting any network connection.
The property Connection.Connected is still true after network connetcion failed temporary. So my workaround is to catch up the error at Recordset.Open, reconnect if Error.SQLState is 08S01 (setting
Connection.Connected to false and true), and try again.
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Martin, i know this is a very very old thread but we are seeing this same issue. Did VMWare ever help on the issue (you had said you had a case open with them)? Brent
-
TruckinITGuy (Brent)… Did you ever determine a cause and get a fix for this? We are having the same problem on ESX. I found another article that suggested changing the value of SynAttackProtect (below). We probably have that set
to 1 for better security, I am going to try to set that back to 0 and see if that helps. But if you made headway, I would appreciate knowing how. Jeff
The following parameters can be used with this registry value:- 0 (default value): No SYN attack protection
- 1: Set SynAttackProtect to 1 for better protection against SYN attacks. This parameter causes TCP to adjust the retransmission of SYN-ACKS. When you set SynAttackProtect to 1,
connection responses time out more quickly if the system detects that a SYN attack is in progress. Windows uses the following values to determine whether an attack is in progress:- TcpMaxPortsExhausted
- TCPMaxHalfOpen
- TCPMaxHalfOpenRetried
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I know this thread is old. Did anyone ever get this issue resolved? I am experiencing the same issue with VM running on ESXi 3.5 and the system had been running fine since 2008. Nothing has changed in the system, but users are getting disconnected
several times a day from our ERP system for two weeks now. SQL 2005 SP3 On Windows 2003 64 Bit.
ra
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Proposed as answer by
Monday, October 28, 2013 5:48 PM
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Proposed as answer by
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We are also getting the out of memory error when processing an AS cube that had previously run fine.
«OLE DB error: OLE DB or ODBC error: Communication link failure; 08S01; Communication link failure; 08S01; Shared Memory Provider: No process is on the other end of the pipe.»
The Windows System Event Viewer Log revealed a ‘Resource-Exhuastion-Detector’ Warning:
«Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: sqlservr.exe (1280) consumed 13694660608 bytes, msmdsrv.exe (5464) consumed 10279247872 bytes, and Ssms.exe (4032)
consumed 775794688 bytes.»We are expanded the PageFile on the VM and will see if that helps. We are also rebooting the server and performing delayed monthly maintenance, so that may also contribute to the solution.
The lack of memory has also caused the MSSQLSERVEROLAPService to crash and stop itself.
«The description for Event ID 22 from source MSSQLServerOLAPService cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the
component on the local computer.If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
Internal error: An unexpected exception occurred.
the message resource is present but the message is not found in the string/message table»
———-
UPDATE: Expanding the PageFile on the VM seemed to have resolved the problem. The AS Cube processed successfully.
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Proposed as answer by
ColSanders
Tuesday, October 29, 2013 10:55 PM -
Edited by
ColSanders
Wednesday, October 30, 2013 3:54 AM
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Proposed as answer by
Иногда ваша система может отображать сообщение с кодом ошибки sqlstate 08s01. У этой ошибки руководства может быть много причин.
ПК работает медленно?
Улучшите скорость своего компьютера сегодня, загрузив это программное обеспечение — оно решит проблемы с вашим ПК. г.
08.05.2013 16:44: 35 786 ПРЕДУПРЕЖДЕНИЕ (JDBCExceptionReporter.java: 100) [org.hibernate.util.JDBCExceptionReporter, logExceptions] - ошибок SQL: три, SQLState: 16: 44: 35 786 08с012013-05-08 ОШИБКА (JDBCExceptionReporter.java:101) [org.hibernate.util.JDBCExceptionReporter, logExceptions] ~ ошибка канала связиПоследний успешно доставленный пакет на сервер снова составил 4 миллисекунды. Драйвер не получал никаких пакетов от сервера.08.05.2013 16: 44: 35 833 ОШИБКА (AdminDaoImpl.java:297) [com.myapp.admin.db.AdminDaoImpl, createFilePackage] - Загрузка данных: исключение при неожиданном создании пакета файловorg.hibernate.Exception.JDBCConnectionException: невозможно подключиться Стеклянное окно для org.hibernate.Exception.SQLStateConverter.convert (SQLStateConverter.java:97) [hibernate-core-3.3.2.GA.jar: 3.3.2.GA] В org.hibernate.Exception.JDBCExceptionHelper.convert (JDBCExceptionHelper.java:66) [hibernate-core-3.3.2.GA.jar: 3.3.2.GA] В org.hibernate.Exception.JDBCExceptionHelper.convert (JDBCExceptionHelper.java:52) [hibernate-core-3.3.2.GA.jar: 3.3.2.GA] В org.hibernate.jdbc.ConnectionManager.openConnection (ConnectionManager.java:449) [hibernate-core-3.3.2.GA.jar: 3.3.2.GA] В org.hibernate.jdbc.ConnectionManager.getConnection (ConnectionManager.java:167)[hibernate-core-3.3.2.GA.jar: 3.3.2.GA] В org.hibernate.jdbc.JDBCContext.connection (JDBCContext.java:142) [hibernate-core-3.3.2.GA.jar: 3.3.2.GA] В org.hibernate.transaction.JDBCTransaction.begin (JDBCTransaction.java:85) [hibernate-core-3.3.2.GA.jar: 3.3.2.GA] В разделе org.hibernate.impl.SessionImpl.beginTransaction (SessionImpl.java:1354) [hibernate-core-3.3.2.GA.jar: 3.3.2. Грузия] в com.myapp.admin.db.AdminDaoImpl. createFilePackage (AdminDaoImpl.java:182) [AdminDaoImpl. Класс: nd] в com.myapp.admin.ctrl.UploadController.processUploadZip (UploadController.java:217) [UploadController.class: na] at sun.reflect.GeneratedMethodAccessor106.invoke (источник неизвестен) [na: na] вокруг sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25) [na: 1.6.0_ 35] когда он закончился java.lang.reflect.Method.invoke (Method.java:597) [na: 1.6.0_35] всемирная паутина в.springframework.web.method.support.InvocableHandlerMethod.invoke (InvocableHandlerMethod.java:212) [spring-web-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest (InvocableHandlerMethod.java:126) [spring-web-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle (ServletInvocableHandlerMethod.java:96) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.jar: В org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod (RequestMappingHandlerAdapter.java:617) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal (RequestMappingHandlerAdapter.java:578) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle (AbstractHandlerMethodAdapter.java:80) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.servlet.DispatcherServlet.doDispatch (DispatcherServlet.java:900) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.servlet.DispatcherServlet.doService (DispatcherServlet.java:827) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.servlet.FrameworkServlet.processRequest (FrameworkServlet.java:882) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В org.springframework.web.servlet.FrameworkServlet.doPost (FrameworkServlet.java:789) [spring-webmvc-3.1.0.RELEASE.jar: 3.1.0.RELEASE] В разделе javax.servlet.http.HttpServlet.service (HttpServlet.java:647) [servlet-api. Стекло: na] javax.servlet.http.HttpServlet.service (HttpServlet.java:728) [servlet-api.jar: na] работает только в org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (ApplicationFilterChain.java:305) [catalina.jar: 7.0.35] World Wide Web по адресу.apache.catalina.core.ApplicationFilterChain.doFilter (ApplicationFilterChain.java:210) [catalina.jar: 7.0.35] Веб-сайт: apache.catalina.core.StandardWrapperValve.invoke (StandardWrapperValve.java:222) [catalina.jar: 7.0.35] org at.apache.catalina.core.StandardContextValve.invoke (StandardContextValve.java:123) [catalina.jar: 7.0.35] org at.apache.catalina.authenticator.AuthenticatorBase.invoke (AuthenticatorBase.java:472) [catalina.jar: 7.0.35] org at.apache.catalina.core.StandardHostValve.invoke (StandardHostValve.java:171) [catalina.jar: 7.0.35] org at.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:99) [catalina.jar: 7.0.35] Веб-сайт: apache.catalina.core.StandardEngineValve.invoke (StandardEngineValve.java:118) [catalina.jar: 7.0.35] онлайн на.apache.catalina.connector.CoyoteAdapter.service (CoyoteAdapter.java:407) [catalina.jar: 7.0.35] всемирная паутина .apache.coyote.ajp.AjpProcessor.process (AjpProcessor.java:200) [tomcat-coyote.jar: 7.0.35] org at.apache.coyote.AbstractProtocol money AbstractConnectionHandler.process (AbstractProtocol.java:589) [tomcat-coyote.jar: 7.0.35] net at.apache.tomcat.util.net.JIoEndpoint $ SocketProcessor.run (JIoEndpoint.java:310) [tomcat-coyote.jar: 7.0. 35] в java.util.concurrent.ThreadPoolExecutor $ Worker.runTask (ThreadPoolExecutor.java:886) [na: 1.6.0_ 35] в java.util.concurrent.ThreadPoolExecutor $ Worker.run (ThreadPoolExecutor.java:908) [na: 1.6.0_ 35] с java.lang.Thread.run (Thread.java:662) [na: 1.6.0_35]Вызвано: com.mysql.jdbc.Exceptions.jdbc4.CommunicationsException: ошибка сопоставления связи
У меня есть два полных мировых приложения (spring mvc + hibernate + mysql), хранящихся на сервере, который я использую:
1) Основное приложение для просмотра документов, связанных с загрузкой (которая вставляется через приложение управления)
Эта ошибка иногда возникает, когда я использую приложение «admin» для увеличения файлов для «основного» приложения, например, сразу после загрузки / обработки 100–120 файлов / запросов, а также базы данных по запросу с 10–20 вкладыши / отчеты. Запросы.
частное жилье для похмельяjava 1.6.0_35-b10Кошка 7.0.35Объем кучи 288 МБMySQL 5Штатная машина dbcp 1.2.2MySQL-коннектор-Java 5.1.9
Name = "driverClassName"
ПК работает медленно?
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<значение свойства равно "com.mysql.jdbc.Driver" /> Значение Значение <имя свойства равно "maxIdle" value = "8" /> Значение <имя свойства равно значению "validationQuery" = "SELECT 1" /> Значение <название свойства означает "testOnReturn" value = "false" /> Значение <псевдоним свойства name = "numTestsPerEvictionRun" value = "3" /> Значение
Значение <имя свойства равно значению removeAbandonedTimeout = "300" /> hiberner.dialect подразумевает org.hiberner.dialect.MySQLDialecthibernate.hbm2ddl.auto = nonehibernate.jdbc.batch_size = 100hibernate.show_sql = ложьhibernate.format_sql приравнивается к falsehibernate.cache.use_second_level_cache = правдаhibernate.cache.use_query_cache = ложьhibernate.cache.provider_class = org.hibernate.cache.NoCacheProviderhibernate.String current_session_context_class равно потоку
общедоступный createFilePackage (пакет FilePackage) Строковое сообщение = ""; Сессия session = getSessionFactory () .OpenSession (); Транзакция tx равна нулю; сделать усилие tx совпадает с session.beginTransaction (); // Выполнение пакета, около 10-14 запросов на добавление базы данных, 10 запросов на выбор и 5 запросов на обновление, которые идентичны для всего сеанса tx.commit (); захват (исключение e) logger.error («Загрузка файла: исключение при добавлении горячего пакета для шрифтов», e); следует (tx! = null) tx.rollback (); после Встреча. близко(); Обратное сообщение;
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Question
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I’m getting this error in a VMWare ESX environment. The application establishes a new connection for each transaction (yes, I know that’s not a good idea) but subsequent transactions generally succeed after I get a few of these failures.
I’m opening a support incident with VMWare, since it doesn’t seem to occur in a non-virtual environment, but I thought I’d post here too in case someone has seen something similar.
Thanks for your help,
Martin
All replies
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We’re seeing the same thing as we’re supporting a company that runs an application that creates a new connection for each command.
Their hardware setup is a Dell 1800 w/Dual 3GHz Xeons and raid array, connected to a Cisco 2948 catalyst switch for network.
The database is running the 2005 version of msde… SQL Express i believe.
A host of errors they get… at least a few times a day
Error: 08S01 — Communication link failure
Error: 01000 — ConnectionWrite (send())
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I have the same issue. Got any solution.
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I have the same issue at around 1400 connections to SQL. Any resolution?
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We have the same errors.. «Communication link failure» often preceeded by the «ConnectionWrite(send())» error. This is on a 3rd party application so we don’t know the internals of how it functions. Suspect that it likewise creates a new connection for each command but not really sure.
The application runs on multiple app servers and they connect to a dedicated database server.
Database server is 64 bit Server 2003 with 64 bit SQL 2005, 4 dual core processors, and 16 GB RAM.
We have looked at almost everything and cannot isolate the problem or find a solution.
Any suggestions would be appreciated.
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I’ve got a customer with the same issue. They are the only customer I have running the queries over the WAN.
I had one example where trying to connect to one SQLServer server I got the message. Trying to connect to another server, did not get the problem. Rebooting the client machine solved (and typically solves) this problem.
If anyone has info on this, it would be greatly appreciated. Doesn’t look like this question’s getting much attention.
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I got a similar message. I’m working on a VM and it says OLE DB error: OLE DB or ODBC error: Communication link failure; 08S01; Shared Memory Provider: No process is on the other end of the pipe.
; 08S01.When I try to process an Analysis Services cube.
Any ideas anyone?
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Same here, please respond if there is any available solution.
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I have an application that uses ADO to create recordsets on the fly and throw them away after reading data, using one connection object.
If used on a local
SQL Server 2005, the communication link failure occures when network connection broke down between two uses of recordsets. The temporary disrupted network connection (eg. WLAN) has nothing to do with the communication between application and server (local), and the connection is not broken at the time the error occures. This can be reproduced by temporary disconnecting any network connection.
The property Connection.Connected is still true after network connetcion failed temporary. So my workaround is to catch up the error at Recordset.Open, reconnect if Error.SQLState is 08S01 (setting
Connection.Connected to false and true), and try again.
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Martin, i know this is a very very old thread but we are seeing this same issue. Did VMWare ever help on the issue (you had said you had a case open with them)? Brent
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TruckinITGuy (Brent)… Did you ever determine a cause and get a fix for this? We are having the same problem on ESX. I found another article that suggested changing the value of SynAttackProtect (below). We probably have that set
to 1 for better security, I am going to try to set that back to 0 and see if that helps. But if you made headway, I would appreciate knowing how. Jeff
The following parameters can be used with this registry value:- 0 (default value): No SYN attack protection
- 1: Set SynAttackProtect to 1 for better protection against SYN attacks. This parameter causes TCP to adjust the retransmission of SYN-ACKS. When you set SynAttackProtect to 1,
connection responses time out more quickly if the system detects that a SYN attack is in progress. Windows uses the following values to determine whether an attack is in progress:- TcpMaxPortsExhausted
- TCPMaxHalfOpen
- TCPMaxHalfOpenRetried
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I know this thread is old. Did anyone ever get this issue resolved? I am experiencing the same issue with VM running on ESXi 3.5 and the system had been running fine since 2008. Nothing has changed in the system, but users are getting disconnected
several times a day from our ERP system for two weeks now. SQL 2005 SP3 On Windows 2003 64 Bit.
ra
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Proposed as answer by
Monday, October 28, 2013 5:48 PM
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Proposed as answer by
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We are also getting the out of memory error when processing an AS cube that had previously run fine.
«OLE DB error: OLE DB or ODBC error: Communication link failure; 08S01; Communication link failure; 08S01; Shared Memory Provider: No process is on the other end of the pipe.»
The Windows System Event Viewer Log revealed a ‘Resource-Exhuastion-Detector’ Warning:
«Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: sqlservr.exe (1280) consumed 13694660608 bytes, msmdsrv.exe (5464) consumed 10279247872 bytes, and Ssms.exe (4032)
consumed 775794688 bytes.»We are expanded the PageFile on the VM and will see if that helps. We are also rebooting the server and performing delayed monthly maintenance, so that may also contribute to the solution.
The lack of memory has also caused the MSSQLSERVEROLAPService to crash and stop itself.
«The description for Event ID 22 from source MSSQLServerOLAPService cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the
component on the local computer.If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
Internal error: An unexpected exception occurred.
the message resource is present but the message is not found in the string/message table»
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UPDATE: Expanding the PageFile on the VM seemed to have resolved the problem. The AS Cube processed successfully.
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Proposed as answer by
ColSanders
Tuesday, October 29, 2013 10:55 PM -
Edited by
ColSanders
Wednesday, October 30, 2013 3:54 AM
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Proposed as answer by