Major error message: severe: IOException while loading persisted sessions: java. io. severe EOFException: Exception loading sessions from persistent storage baidu. In combination with the solution provided on the Internet, I will also make a backup here. analysis: EOFException indicates the signal that the input process is intended to reach the end of the file or the end of the stream, causing data acquisition from the session to fail. Exception is caused by tomcat itself. Due to the abnormal shutdown of tomcat last time, some active sessions are persisted (as some temporary files). During restart, tomcat tries to restore the persistent data of these sessions but fails to read the data. This exception does not affect system usage. Solution: delete tomcat6/work/Catalina/localhost/yourProjectName/SESSIONS. ser. If the server is shut down normally, the file is automatically deleted. Note: yourProjectName is the name of the Web project you are currently working on. We recommend that you find your SESSIONS. ser file in the "Search" function and delete SESSIONS. ser under ../yourProjectName.