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Error message when running telnet session running oracle process

Lacrosse
Regular Advisor

Error message when running telnet session running oracle process

Mar 8 20:17:30 blacky remshd[26723]: connect second port: Connection timed out
Mar 8 20:17:31 blacky remshd[26747]: allowed connection from oracle@goofy.com
Mar 8 20:18:47 blues remshd[26747]: connect

remshd: connect: Connection timed out
and
.rcmd: accept: No buffer space available

Which causes our telnet session to drop
Has anyone seen this type of error
3 REPLIES
Steven E. Protter
Exalted Contributor

Re: Error message when running telnet session running oracle process

Lots of thigns can cause a telnet session to drop. I would check kernel parameters such as nproc and nfile.

I would run glance or gpm and look at system table usage, you may be running out of space and need to make adjustment.

Attaching some useful sar scrips that can help with the problem.

SEP
Steven E Protter
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RAC_1
Honored Contributor

Re: Error message when running telnet session running oracle process

.rcmd: accept: No buffer space available

Could not be caused by lot of reasons.
Check swap space utilization.
(swapinfo -mat)
Check buffer cache usage.
sar -b
glance -m

What is your setting for tcp_conn_request_max?
ndd -get /dev/tcp tcp_conn_request_max

Anil
There is no substitute to HARDWORK
Steve Steel
Honored Contributor

Re: Error message when running telnet session running oracle process

Hi


Options

1)Network patches

2)Kernel tuning

3)Name resolution
Ip address problems

4)Memory leak

You need to check it - Best bet is a patching update and kernel tuning .

Include maxssiz in calculation


Steve Steel
If you want truly to understand something, try to change it. (Kurt Lewin)