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@xxxxxxxxxxx> 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)*
*D&B *047931344
*CAGE *7J5S7
*Dimensional.dba@xxxxxxxxxxx <Dimensional.dba@xxxxxxxxxxx>*
*View Matthew Parker's profile on LinkedIn*
<http://www.linkedin.com/pub/matthew-parker/6/51b/944/>
www.dimensionaldba.com
*From:* oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@
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
