mid-tier application not coming up

woo — Tue, 30 Oct 2018 02:41:14 GMT

Hello, we are running

Version - sas 9.3 m3

OS - Linux VM

where we really don't have much memory available (zero physical memory with 15 gb cached memory available). when we start web application, can login fine but nothing is coming up.

how do i overcome these errors?

server.log has this error

ERROR (tomcat-http--2) [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/SASModelRisk].[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
at org.apache.jsp.layout.CompanyLogo_jsp._jspService(CompanyLogo_jsp.java:123)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728)

and catalina.out has this error,

[tomcat-http--2] ERROR com.sas.oprisk.monitor.web.ErrorServlet - An error occurred while handling another error.
org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: org.apache.jasper.JasperException: org.apache.jasper.JasperException: org.apache.jasper.JasperException: org.apache.jasper.JasperException: java.lang.NullPointerException
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:565)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:728)

Re: mid-tier application not coming up

JuanS_OCS — Mon, 12 Nov 2018 09:27:26 GMT

Hello @woo,

Unfortunately this is not enough to get good conclussions, you would need to take additional actions or retrieve further information.

Anything from the list below would help.

Personally, I would:

Drop any non-required web applications from deploying (carefull with the WIP ones)
Align with SAS Technical Support to fine tune the memory settings of your SAS and SAS/Web Java JVMs
Monitor, if possible, those JVMs memory counters with JMX connection (jconsole, e.g) which will give you the scientifical reasoning to what is going on.
Check other logs: RemoteServices, Web Applications (under SAS Config folder), your /etc/messages on Linux, etc
Increase that physical RAM, where possible

Hope it helps. Please share any further information you manage to retrieve.

Best regards,

Juan

Re: mid-tier application not coming up

SimonDawson — Tue, 13 Nov 2018 07:40:48 GMT

SAS 9.3 is quite old. This likely means it was working for a long time. When did this stop working? When was it last working? What was changed in that period since the two startups?

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mid-tier application not coming up

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Re: mid-tier application not coming up