The immortal aioserver


 
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Operating Systems AIX The immortal aioserver
# 1  
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
# 2  
Old 10-20-2015
why do you think, that this processes use /oracle?
# 3  
Old 10-20-2015
Is ASM in play here, and although you have shutdown your user database instances, is this still running perhaps? Whatever it is, there should be an equivalent stop for the start that was issued.

What do Oracle say? You are surely paying them for the software, so make them earn the money Smilie



Robin
# 4  
Old 10-20-2015
If fuser does not show what is accessing the FS, maybe get lsof to see what keeps it's hands on it.
# 5  
Old 10-20-2015
I suppose I should check that you are using the correct flags for fuser as without any, it will test the file or directory you name, but processes in subdirectories will not be seen.

Try fuser -c /oracle to see if that gives more information.

What OS and version are you using? The flags can vary between them.



Robin
# 6  
Old 10-20-2015
The -c option might find what fuser alone does not find.
Code:
fuser /oracle
fuser -c /oracle

Of course lsof examines+finds the most.
--
The aioserver might be kernel threads, unkillable.
# 7  
Old 10-20-2015
Quote:
Originally Posted by agent.kgb
why do you think, that this processes use /oracle?
All processes belong to user oracle,homedir /oracle

---------- Post updated at 10:43 AM ---------- Previous update was at 10:42 AM ----------

Quote:
Originally Posted by zaxxon
If fuser does not show what is accessing the FS, maybe get lsof to see what keeps it's hands on it.
Lsof report nothing
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