Not able to login to system, getting this error inetd telnet/tcp: accept: No buffer space available

[Pulse001]

Hi,
I have a rp3440 running on HP-UX 11iv3 and i am not able to login to the system through telnet. I am able to see the following error on console.

inetd telnet/tcp: accept: No buffer space available

I am getting the login prompt from telnet , but after entering username and password i am not etting the # prompt .

What should i do ? Please suggest.

[VK2COT · Accepted solution]

Hello,

This is one of very famous errors.

The error message that you are getting is
generally seen during high workload on a
server.

Some ideas where to look for a resolution:

a) Check your RAM and swap utilisation.
Free memory if possible.

b) Since you run HP-UX 11.31, I assume your
O/S and patches are in order (not too old).

c) Maybe you need to increase value for
parameter tcp_conn_request_max?

Edit /etc/rc.config.d/nddconf,and add lines
like:

TRANSPORT_NAME[n]=tcp
NDD_NAME[n]=tcp_conn_request_max
NDD_VALUE[n]=...

.. to make the change permanent.

Or, use ndd(1m) command to make the change
immediately (no reboot required).

Cheers,

VK2COT

[SKR_1]

1. Number of telnet sessions exceeds the limit.
2. Heavy load on the server

Thanks

SKR

[Laurent Menase]

if it is since you installed a patch, check the swagent.log & swinstall.log to see if no error occured during the install.
This can be due to a kernel binary mismatch.
- kernel libs not consistent from different patches-

[Pulse001]

The problem was heavy load on the server due to very large size of SGA specified bt DBA and the system was not having enough free memory. I got the SGA size reduced and it was fine.