Ords freezes randomly

Question

Red Hat 6.5
Tomcat 6.0.24-64
ORDS 2.0.7.91.15.01
APEX DB 4.2.4.00.08
Configure apex and works fine but ORDS freezes randomly, try to get "wget -d -O /tmp/pedro.lis http://localhost:8080/ords/apex_admin" from server but freeze about 3 minutes and works fine. At catalina.2014-05-12.log get some errors about "Broken pipe"
May 12, 2014 5:07:19 PM oracle.dbtools.apex.ModApexContext write
SEVERE: null
ClientAbortException:  java.net.SocketException: Broken pipe
        at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:358)
        at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:354)
        at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:381)
        at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:370)
        at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)
        at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:83)
        at oracle.dbtools.rt.web.WebErrorResponse$DeferErrorOuput.write(WebErrorResponse.java:255)
        at oracle.dbtools.apex.ModApexContext.write(ModApexContext.java:240)
        at oracle.dbtools.apex.ModApexContext.write(ModApexContext.java:210)
        at oracle.dbtools.apex.ModApex.handleRequest(ModApex.java:231)
        at oracle.dbtools.apex.ModApex.doPost(ModApex.java:151)
        at oracle.dbtools.apex.ModApex.service(ModApex.java:302)
        at oracle.dbtools.rt.web.HttpEndpointBase.modApex(HttpEndpointBase.java:350)
        at oracle.dbtools.rt.web.HttpEndpointBase.service(HttpEndpointBase.java:132)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org
Any ideas ?
Regards
PGutierrez

Answer 1

Sorry for the late reply.
I decided to check if overheating could be the problem so i monitored the temperature for a few days and they seemed to be under control when the freeze/lockup occurs. Sometimes i get lockups even on a cold start.
Recently i came across this https://bugs.launchpad.net/ubuntu/+sour … bug/568611 . I hadnt noticed any problems with brightness control but i decided to check anyway. It works most of the time, but if i try to increase or decrease it a few times (using the functions keys or using the gnome applet), the system locks up. I can reproduce this consistently. Also this seems to be consistent with freeze in GDM because the lockup almost coincides with the point when the gnome power manager tries to restore the brightness levels.
There is also a fix https://launchpad.net/~kamalmostafa/+ar … gbacklight for this. Is there way to patch this onto my kernel?