HTTP 상태 500 – 내부 서버 오류


타입 예외 보고

메시지 javax.servlet.ServletException: java.sql.SQLNonTransientConnectionException: Too many connections

설명 서버가, 해당 요청을 충족시키지 못하게 하는 예기치 않은 조건을 맞닥뜨렸습니다.

예외

org.apache.jasper.JasperException: javax.servlet.ServletException: java.sql.SQLNonTransientConnectionException: Too many connections
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:598)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:499)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

근본 원인 (root cause)

javax.servlet.ServletException: java.sql.SQLNonTransientConnectionException: Too many connections
	org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:909)
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:838)
	org.apache.jsp.jap.sub.news_005flist_jsp._jspService(news_005flist_jsp.java:499)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

근본 원인 (root cause)

java.sql.SQLNonTransientConnectionException: Too many connections
	com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110)
	com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
	com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
	com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
	com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:456)
	com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
	com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:197)
	java.sql.DriverManager.getConnection(DriverManager.java:664)
	java.sql.DriverManager.getConnection(DriverManager.java:247)
	org.apache.jsp.jap.sub.news_005flist_jsp._jspService(news_005flist_jsp.java:264)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

비고 근본 원인(root cause)의 풀 스택 트레이스를, 서버 로그들에서 확인할 수 있습니다.


Apache Tomcat/8.5.57