I'm getting the back end closing connections early for some reason.
Here is an exception report from my servlet. This first started
happening with my instance of Trac, but now it's happening to my Java
apps too. I hope someone can shed some light on what is going on
here.
Alex
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
org.apache.jasper.JasperException: javax.servlet.ServletException:
javax.servlet.jsp.JspException:
select venue,
city, a.state from venue a, city b, subscriber c where
a.city_id=b.city_id and
distance(deg2rad(c.latitude),deg2rad(c.longitude), deg2rad(a.latitude),
deg2rad(a.longitude))<60.0 and c.subscriber_id=?
: An I/O
error occured while sending to the backend.
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:541)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
javax.servlet.ServletException: javax.servlet.jsp.JspException:
select venue,
city, a.state from venue a, city b, subscriber c where
a.city_id=b.city_id and
distance(deg2rad(c.latitude),deg2rad(c.longitude), deg2rad(a.latitude),
deg2rad(a.longitude))<60.0 and c.subscriber_id=?
: An I/O
error occured while sending to the backend.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:846)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspService(find_005fsubscriber_jsp.java:420)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
org.postgresql.util.PSQLException: An I/O error occured while
sending to the backend.
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:217)
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:452)
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:351)
org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:255)
org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doEndTag(QueryTagSupport.java:215)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_sql_005fquery_005f2(find_005fsubscriber_jsp.java:1388)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_c_005fif_005f6(find_005fsubscriber_jsp.java:933)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_c_005fforEach_005f0(find_005fsubscriber_jsp.java:752)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_c_005fif_005f2(find_005fsubscriber_jsp.java:543)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspService(find_005fsubscriber_jsp.java:220)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
java.io.EOFException
org.postgresql.core.PGStream.ReceiveChar(PGStream.java:257)
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1165)
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:191)
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:452)
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:351)
org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:255)
org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doEndTag(QueryTagSupport.java:215)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_sql_005fquery_005f2(find_005fsubscriber_jsp.java:1388)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_c_005fif_005f6(find_005fsubscriber_jsp.java:933)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_c_005fforEach_005f0(find_005fsubscriber_jsp.java:752)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspx_meth_c_005fif_005f2(find_005fsubscriber_jsp.java:543)
org.apache.jsp.admin.find_005fsubscriber_jsp._jspService(find_005fsubscriber_jsp.java:220)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache
Tomcat/6.0.14 logs.
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TIP 2: Don't 'kill -9' the postmaster
