com.mysql.jdbc.exceptions.jdbc4.CommunicationsException

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    • com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 1 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:8) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:77) at org.activiti.engine.impl.db.DbSqlSession.selectList(DbSqlSession.java:191) at org.activiti.engine.impl.persistence.entity.JobManager.findNextJobsToExecute(JobManager.java:97) at org.activiti.engine.impl.cmd.AcquireJobsCmd.execute(AcquireJobsCmd.java:49) at org.activiti.engine.impl.cmd.AcquireJobsCmd.execute(AcquireJobsCmd.java:32) at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24) at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42) at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130) at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40) at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) at org.activiti.engine.impl.jobexecutor.JobAcquisitionThread.run(JobAcquisitionThread.java:63) Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure [...] Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2552) at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3002)

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