ohasd.bin process has many open files (a few hundred) (Doc ID 1517512.1)

Last updated on OCTOBER 13, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 to 11.2.0.3 [Release 11.2]
Information in this document applies to any platform.

Symptoms

o On a 11gR2 cluster environment, it is found that the 'ohasd.bin' process has lots of opening files, including pipe and sockets. 

# ps -ef | grep 'ohasd.bin'

root     22792     1  0 Nov20 ?        00:35:36 /oracle/product/grid_home/bin/ohasd.bin reboot

/usr/sbin/lsof -p `ps -ef|grep ohasd,bin | grep -v grep| awk '{print $2}'`

COMMAND     PID USER   FD   TYPE             DEVICE      SIZE       NODE NAME
ohasd.bin 22792 root  cwd    DIR            253,101      4096    1343521 /oracle/product/grid_home/log/server1/ohasd
ohasd.bin 22792 root  rtd    DIR                8,1      4096          2 /
ohasd.bin 22792 root  txt    REG            253,101 102617590    1540442 /oracle/product/grid_home/bin/ohasd.bin
ohasd.bin 22792 root  mem    REG                8,1    144776    2982071 /lib64/ld-2.5.so
ohasd.bin 22792 root  mem    REG                8,1   1718232    2982085 /lib64/libc-2.5.so
ohasd.bin 22792 root  mem    REG                8,1     23360    2982106 /lib64/libdl-2.5.so
ohasd.bin 22792 root  mem    REG                8,1    145872    2982121 /lib64/libpthread-2.5.so

...

ohasd.bin 22792 root    5w  FIFO                8,7               131074 /var/tmp/.oracle/npohasd
ohasd.bin 22792 root    6w  FIFO                8,7               131074 /var/tmp/.oracle/npohasd
ohasd.bin 22792 root    7w  FIFO                8,7               131074 /var/tmp/.oracle/npohasd
ohasd.bin 22792 root    8w  FIFO                8,7               131074 /var/tmp/.oracle/npohasd
ohasd.bin 22792 root    9w  FIFO                8,7               131074 /var/tmp/.oracle/npohasd
...

ohasd.bin 22792 root  624u  unix 0xffff815fd5215940             62014732 socket
ohasd.bin 22792 root  625u  unix 0xffff815fd5214b80             62014733 socket
ohasd.bin 22792 root  626u  unix 0xffff815fd5215100             62014734 socket
....

 

#  /usr/sbin/lsof -p `ps -ef|grep ohasd,bin | grep -v grep| awk '{print $2}'` | grep '22792 root' | wc -l
741
# /usr/sbin/lsof -p `ps -ef|grep ohasd,bin | grep -v grep| awk '{print $2}'` | grep '22792 root' | grep npohasd | wc -l
595

 

Cause

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