HTTP Status 500 – Internal Server Error


Type Exception Report

Message JDBC begin transaction failed:

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.hibernate.TransactionException: JDBC begin transaction failed: 
	org.hibernate.resource.jdbc.internal.AbstractLogicalConnectionImplementor.begin(AbstractLogicalConnectionImplementor.java:78)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:285)
	org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:246)
	org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:83)
	org.hibernate.internal.AbstractSharedSessionContract.beginTransaction(AbstractSharedSessionContract.java:503)
	system.SessionCounter.requestInitialized(SessionCounter.java:99)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:433)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.base/java.lang.Thread.run(Thread.java:833)

Root Cause

com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet successfully received from the server was 2,743 milliseconds ago. The last packet sent successfully to the server was 2,743 milliseconds ago.
	com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:175)
	com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
	com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2022)
	com.zaxxer.hikari.pool.ProxyConnection.setAutoCommit(ProxyConnection.java:414)
	com.zaxxer.hikari.pool.HikariProxyConnection.setAutoCommit(HikariProxyConnection.java)
	org.hibernate.resource.jdbc.internal.AbstractLogicalConnectionImplementor.begin(AbstractLogicalConnectionImplementor.java:72)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:285)
	org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:246)
	org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:83)
	org.hibernate.internal.AbstractSharedSessionContract.beginTransaction(AbstractSharedSessionContract.java:503)
	system.SessionCounter.requestInitialized(SessionCounter.java:99)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:433)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.base/java.lang.Thread.run(Thread.java:833)

Root Cause

com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet successfully received from the server was 2,743 milliseconds ago. The last packet sent successfully to the server was 2,743 milliseconds ago.
	java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
	java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
	java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
	com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:62)
	com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
	com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:150)
	com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:166)
	com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:582)
	com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:762)
	com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:701)
	com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:1052)
	com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:998)
	com.mysql.cj.NativeSession.execSQL(NativeSession.java:655)
	com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2005)
	com.zaxxer.hikari.pool.ProxyConnection.setAutoCommit(ProxyConnection.java:414)
	com.zaxxer.hikari.pool.HikariProxyConnection.setAutoCommit(HikariProxyConnection.java)
	org.hibernate.resource.jdbc.internal.AbstractLogicalConnectionImplementor.begin(AbstractLogicalConnectionImplementor.java:72)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:285)
	org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:246)
	org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:83)
	org.hibernate.internal.AbstractSharedSessionContract.beginTransaction(AbstractSharedSessionContract.java:503)
	system.SessionCounter.requestInitialized(SessionCounter.java:99)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:433)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.base/java.lang.Thread.run(Thread.java:833)

Root Cause

java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
	com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:67)
	com.mysql.cj.protocol.a.SimplePacketReader.readHeaderLocal(SimplePacketReader.java:81)
	com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63)
	com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45)
	com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52)
	com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41)
	com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54)
	com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44)
	com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:576)
	com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:762)
	com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:701)
	com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:1052)
	com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:998)
	com.mysql.cj.NativeSession.execSQL(NativeSession.java:655)
	com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2005)
	com.zaxxer.hikari.pool.ProxyConnection.setAutoCommit(ProxyConnection.java:414)
	com.zaxxer.hikari.pool.HikariProxyConnection.setAutoCommit(HikariProxyConnection.java)
	org.hibernate.resource.jdbc.internal.AbstractLogicalConnectionImplementor.begin(AbstractLogicalConnectionImplementor.java:72)
	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.begin(LogicalConnectionManagedImpl.java:285)
	org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.begin(JdbcResourceLocalTransactionCoordinatorImpl.java:246)
	org.hibernate.engine.transaction.internal.TransactionImpl.begin(TransactionImpl.java:83)
	org.hibernate.internal.AbstractSharedSessionContract.beginTransaction(AbstractSharedSessionContract.java:503)
	system.SessionCounter.requestInitialized(SessionCounter.java:99)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:433)
	org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791)
	org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.base/java.lang.Thread.run(Thread.java:833)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/9.0.73