Я получаю PSQLException, когда пытаюсь подключиться к DB

Question

Что может быть причиной этого?

StackTrace:

org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568) 
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:455) 
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391) 
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:335) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 
root cause 

javax.servlet.ServletException: org.postgresql.util.PSQLException: Protocol error. Session setup failed. 
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:905) 
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:834) 
    org.apache.jsp.login_005fsave_jsp._jspService(login_005fsave_jsp.java:149) 
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) 
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391) 
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:335) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 

root cause 

org.postgresql.util.PSQLException: Protocol error. Session setup failed. 
    org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:381) 
    org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:94) 
    org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:65) 
    org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:116) 
    org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:30) 
    org.postgresql.jdbc3.Jdbc3Connection.<init>(Jdbc3Connection.java:24) 
    org.postgresql.Driver.makeConnection(Driver.java:369) 
    org.postgresql.Driver.connect(Driver.java:245) 
    java.sql.DriverManager.getConnection(DriverManager.java:664) 
    java.sql.DriverManager.getConnection(DriverManager.java:208) 
    org.apache.jsp.login_005fsave_jsp._jspService(login_005fsave_jsp.java:107) 
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) 
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391) 
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:335) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 

Answer 1

Я думаю, что проблема в файле конфигурации

Вы можете должны проверить этот пост: org.postgresql.util.PSQLException: Protocol error. Session setup failed