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IBM AIX/UNIX system storage administration ksh/perl scripting

Wednesday, May 06, 2009

Determine which process is using a specific network port on AIX with or without lsof

Method 1. Using lsof.

It will be easy if you have lsof installed.

# lsof -i:32876
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
oracle 135744 oracle7 13u IPv4 0x70bbe200 0t11 UDP loopback:32876

# ps -ef|grep 135744
oracle7 135744 1 0 Apr 21 - 2:45 ora_pmon_ftc_p01

Method 2. Using netstat and rmsock

# netstat -Aan|grep 9991
f100020000626b98 tcp4 0 0 *.9991 *.* LISTEN

# rmsock f100020000626b98 tcpcb
The socket 0x626808 is being held by proccess 200928 (sysscand).

#ps -ef|grep 200928
root 200928 1 0 Apr 21 - 0:01 /opt/sysscan/bin/sysscand


Method 3: Using netstat and kdb.

# netstat -Aan|grep 9991
f100020000626b98 tcp4 0 0 *.9991 *.* LISTEN

# kdb
The specified kernel file is a 64-bit kernel
Preserving 1418431 bytes of symbol table
First symbol __mulh
START END
0000000000001000 0000000003E0D050 start+000FD8
F00000002FF47600 F00000002FFDC940 __ublock+000000
000000002FF22FF4 000000002FF22FF8 environ+000000
000000002FF22FF8 000000002FF22FFC errno+000000
F100070F00000000 F100070F10000000 pvproc+000000
F100070F10000000 F100070F18000000 pvthread+000000
PFT:
PVT:
id....................0002
raddr.....0000000000724000 eaddr.....F200800030000000
size..............00040000 align.............00001000
valid..1 ros....0 fixlmb.1 seg....0 wimg...2
ERROR: Unable to acess nfs_syms

(0)> sockinfo f100020000626b98 tcpcb
.................
..............

on last a few lines.

proc/fd: 49/0
proc/fd: fd: 0
SLOT NAME STATE PID PPID ADSPACE CL #THS

pvproc+00C400 49*sysscand ACTIVE 00310E0 0000001 00000000285C7400 0 0001



(0)> hcal 00310E0
Value hexa: 000310E0 Value decimal: 200928

(0)> quit

# ps -ef|grep 200928
root 200928 1 0 Apr 21 - 0:01 /opt/sysscan/bin/sysscand

3 comments:

newsfromhungary said...

FYI: Method 1:
'lsof -t -i :$port' will suppress the header and will display only the PIDs.

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