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Full Discussion: The immortal aioserver
Operating Systems AIX The immortal aioserver Post 302958118 by Linusolaradm1 on Monday 19th of October 2015 01:25:26 PM
Old 10-19-2015
The immortal aioserver

When shutdown an oracle server i see this error message
at exit

Code:
umount /oracle/
umount: error unmounting /dev/oracle: Device busy

lsof and fuser report nothing
but
Code:
ps aux|grep oracle

report this
Code:
oracle    5964026  0,0  0,0  448  448      - A      apr 21  0:00 aioserver
oracle   10289224  0,0  0,0  448  448      - A    19:09:27  0:00 aioserver
oracle   11075692  0,0  0,0  448  448      - A    19:09:27  0:00 aioserver
oracle   11468902  0,0  0,0  448  448      - A    19:09:27  0:00 aioserver
oracle   13631648  0,0  0,0  448  448      - A    19:09:27  0:00 aioserver
oracle    3604680  0,0  0,0  448  448      - A    19:09:27  0:00 aioserver

I try to kill with kill -15 and also kill -9 but they still alive

Using pstree i see this

Code:
 |--= 1966178 root aioPpool
 |--= 2228302 root aioLpool
 |--= 3604680 root aioserver
 |--= 5964026 root aioserver
 |--= 10289224 root aioserver
 |--= 11075692 root aioserver
 |--= 11468902 root aioserver
 \--= 13631648 root aioserver

Question is,how to kill those process for umounting oracle?
Thanks
 

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UMOUNT.NFS(8)						      System Manager's Manual						     UMOUNT.NFS(8)

NAME
umount.nfs, umount.nfs4 - unmount a Network File System SYNOPSIS
umount.nfs dir [-fvnrlh ] DESCRIPTION
umount.nfs and umount.nfs4 are a part of nfs(5) utilities package, which provides NFS client functionality. umount.nfs4 and umount.nfs are meant to be used by the umount(8) command for unmounting NFS shares. This subcommand, however, can also be used as a standalone command with limited functionality. dir is the directory on which the file system is mounted. OPTIONS
-f Force unmount the file system in case of unreachable NFS system. -v Be verbose. -n Do not update /etc/mtab. By default, an entry is created in /etc/mtab for every mounted file system. Use this option to skip delet- ing an entry. -r In case unmounting fails, try to mount read-only. -l Lazy unmount. Detach the file system from the file system hierarchy now, and cleanup all references to the file system as soon as it is not busy anymore. -h Print help message. NOTE
For further information please refer nfs(5) and umount(8) manual pages. FILES
/etc/fstab file system table /etc/mtab table of mounted file systems SEE ALSO
nfs(5), umount(8), AUTHOR
Amit Gud <agud@redhat.com> 6 Jun 2006 UMOUNT.NFS(8)
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