error port 50020

[Miguel Carabano_1]

Hi Team,

I need help!

When execute in host1:
# netstat -an | grep 50020

Don´t display from console, but in another host, example host2 it´s OK!

File Attach: port_ok.txt

Thanks

MC

[James R. Ferguson]

Hi:

Whatever process you expect to be using port # 50020 isn't running. Compare your startup ('/sbin/rc.d') scripts on the two machines and your '/etc/inittab' entries.

Regards!

...JRF...

[Miguel Carabano_1]

James,

But before worked!

Host1 is rp5470 (9000/800/L3000-7x) with hpux 11.23

Host2 is SuperDome (ia64 hp superdome server SD32B)

any idea ?

[Torsten.]

Maybe an application that was listening to that port has stopped.

Check with "lsof" on the working server what it is.

http://hpux.asknet.de/hppd/hpux/Sysadmin/lsof-4.80/

[Miguel Carabano_1]

Hi,

I don´t understand output.

please see.

Thanks

[Patrick Wallek]

You just listed all the processes. You probably just typed 'lsof' at the prompt, right?

Try this to list the specific items that for port 50020:

lsof -i tcp:50020
(This assume it is tcp port 50020 and not UDP port 50020).

If it is a UDP port, then do:

lsof -i udp:50020

[Miguel Carabano_1]

Patrick,

After executed command:

[host1]/> /usr/local/bin/lsof -i tcp:50020
[host1]/>

None!

But in host2

host2:/> /usr/local/bin/lsof -i tcp:50020
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
jlaunch 18625 bw1adm 64u IPv4 0xe000000182095ac0 0t313559 TCP localhost:55540->localhost:50020 (ESTABLISHED)
jlaunch 18626 bw1adm 57u IPv4 0xe0000001820af200 0t0 TCP *:50020 (LISTEN)
jlaunch 18626 bw1adm 60u IPv4 0xe000000182095900 0t61146 TCP localhost:50020->localhost:55540 (ESTABLISHED)

I don´t idea about application can are stoped...

[Patrick Wallek]

OK, on HOST2 there is an application called 'jlaunch' that is running that is listening on port 50020.

This application is NOT running on HOST1. If it is supposed to be, then you need to figure out 2 things:

1) Why did it stop.

2) How to restart it.

I would guess you need to figure out who wrote this application or who the support person is for the application.

I don't recognize jlaunch as any HP application.

[OldSchool]

Patrick: FWIW the jlaunch stuff i've found seems to either be windows-related, or SAP web-based admin in UNIX env.