Mysql Error 08501
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up SQL Error: 0, SQLState: 08S01 Communications link failure up vote 3 down vote favorite 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.jav
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs http://stackoverflow.com/questions/16459990/sql-error-0-sqlstate-08s01-communications-link-failure Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up WARN SqlExceptionHelper:143 - SQL Error: 0, SQLState: http://stackoverflow.com/questions/15752667/warn-sqlexceptionhelper143-sql-error-0-sqlstate-08s01-sqlexceptionhelper 08S01- SqlExceptionHelper:144 - Communications link failure up vote 5 down vote favorite 2 I have problem with Hibernate (hibernate-core-4.1.9.Final.jar) When i testing hibernate in for loop all working fine: for(int i=0;i<1500;i++){ UserDAO.getInstance.getById(1); } When i add Thread.sleep() in for loop for(int i=0;i<1500;i++){ UserDAO.getInstance.getById(1); Thread.sleep(60000); } After 1 minute i get exception : 00:20:06,447 WARN SqlExceptionHelper:143 - SQL Error: 0, SQLState: 08S01 00:20:06,448 ERROR SqlExceptionHelper:144 - Communications link failure The last packet successfully received from the server was 120,017 milliseconds ago. The last packet sent successfully to the server was 9 milliseconds ago. Exception in thread "main" org.hibernate.exception.JDBCConnectionException: Communications link failure The last packet successfully received from the server was 120,017 milliseconds ago. The last packet sent successfully to the server was 9 milliseconds ago. at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:131) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125) at org.hibernate.engine.jdbc.spi.SqlException
Connectors More MySQL.com Downloads Developer Zone Section Menu: Documentation Home MySQL Connector/J 5.1 https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-error-sqlstates.html Developer Guide Preface and Legal Notices Overview of MySQL Connector/J Connector/J Versions Connector/J Release Notes and Change History Java Versions Supported Connector/J https://developer.ibm.com/answers/questions/184054/receiving-error-communications-link-failure-while.html Installation Installing Connector/J from a Binary Distribution Installing the Driver and Configuring the CLASSPATH Upgrading from an Older Version Upgrading to mysql error MySQL Connector/J 5.1.x JDBC-Specific Issues When Upgrading to MySQL Server 4.1 or Newer Upgrading from MySQL Connector/J 3.0 to 3.1 Installing from Source Testing Connector/J Connector/J Examples Connector/J (JDBC) Reference Driver/Datasource Class Names, URL Syntax and Configuration Properties for Connector/J Properties Files for the mysql error 08501 useConfigs Option JDBC API Implementation Notes Java, JDBC and MySQL Types Using Character Sets and Unicode Connecting Securely Using SSL Connecting Using PAM Authentication Using Master/Slave Replication with ReplicationConnection Mapping MySQL Error Numbers to JDBC SQLState Codes JDBC Concepts Connecting to MySQL Using the JDBC DriverManager Interface Using JDBC Statement Objects to Execute SQL Using JDBC CallableStatements to Execute Stored Procedures Retrieving AUTO_INCREMENT Column Values through JDBC Connection Pooling with Connector/J Multi-Host Connections Configuring Server Failover Configuring Load Balancing with Connector/J Configuring Master/Slave Replication with Connector/J Advanced Load-balancing and Failover Configuration Using the Connector/J Interceptor Classes Using Connector/J with Tomcat Using Connector/J with JBoss Using Connector/J with Spring Using JdbcTemplate Transactional JDBC Access Connection Pooling with Spring Using Connector/J with GlassFish A Simple JSP Application with GlassFish, Connector/J and MySQ
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