DB Connection Error : Server connection failure during transaction. Due to underlying exception: 'java.sql.SQLException: Invalid authorization specification, message from server: "Access denied for user 'ipaos_admin'@'211.115.80.112' (using password: YES)"'. ** BEGIN NESTED EXCEPTION ** java.sql.SQLException MESSAGE: Invalid authorization specification, message from server: "Access denied for user 'ipaos_admin'@'211.115.80.112' (using password: YES)" STACKTRACE: java.sql.SQLException: Invalid authorization specification, message from server: "Access denied for user 'ipaos_admin'@'211.115.80.112' (using password: YES)" at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1977) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1900) at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:2471) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:813) at com.mysql.jdbc.Connection.createNewIO(Connection.java:1887) at com.mysql.jdbc.Connection.(Connection.java:440) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:400) at java.sql.DriverManager.getConnection(DriverManager.java:571) at java.sql.DriverManager.getConnection(DriverManager.java:215) at org.apache.jsp.index_jsp._jspService(index_jsp.java:108) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) ** END NESTED EXCEPTION ** Attempted reconnect 3 times. Giving up.