Re: Intermittent timeouts on Glassgish server

Thanks Matt and Timur for the suggestions. I did look at Glassfish server.log. All I see there is normal activity, until problem occurs, then just 'connection reset by peer' error. No other clues.

I'll try the other stuff next time probem occurs.

-Mark

On Fri, Sep 30, 2016 at 5:28 AM, Dimensional DBA < dimensional.dba_at_comcast.net> wrote:

> Have you tried to
>
> 1. Trace the process on the app server while you are trying to
> connect?
>
> 2. Performed a tcpdump on the app server while you are trying to
> connect?
>
> 3. Have you looked ta Glassfish’s server logs?
>
> 4. Have you turned on monitoring in the JVM to pull monitor
> information, error reports (asadmin)? (off by default)
>
> asadmin generate-jvm-report --type=[type]
>
> https://docs.oracle.com/cd/E19879-01/820-4335/ablvu/index.html
>
> 5. Have you tried the jvm tools to look at the jvm (jstat, jmap,
> jconsole)?
>
>
>
>
>
>
>
> *Matthew Parker*
>
> *Chief Technologist*
>
> *Dimensional DBA*
>
> *425-891-7934 <425-891-7934> (cell)*
>
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>
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>
> *Dimensional.dba_at_comcast.net <Dimensional.dba_at_comcast.net>*
>
> *View Matthew Parker's profile on LinkedIn*
> <http://www.linkedin.com/pub/matthew-parker/6/51b/944/>
>
> www.dimensionaldba.com
>
>
>
> *From:* oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_
> freelists.org] *On Behalf Of *Mark J. Bobak
> *Sent:* Friday, September 30, 2016 1:55 AM
> *To:* ORACLE-L
> *Subject:* Intermittent timeouts on Glassgish server
>
>
>
> Hi all,
>
>
>
> Our standard stack is Oracle Database 12.1.0.2->APEX 5.0->ORDS 3.0.6->
> GlassFish 4.1.1.
>
>
>
> This generally works well, and is implemented on several sites (possibly
> with minor version variations on various components.)
>
>
>
> However, on one particular server, Glassgish periodically slow down, and
> eventually hang to the point that, when trying to reach the app login
> screen in a Web browser, we'll get connection reset errors.
>
>
>
> I *thought* this was the JDBC & /dev/random entropy pool problem. But
> yesterday, I modified GlassFish JVM configuration to use /dev/urandom, and
> users continue to report intermittent slowness and connection reset errors.
>
>
>
> I'm about at my wits end here.
>
>
>
> Help!
>
>
>
> If anyone has any ideas/thoughts/suggestions, I'd love to hear them!
>
>
>
> AdvThanksance,
>
>
>
> -Mark
>

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