Originally posted by: sajid1

Hi All,

I am monitoring using topas command Disk Utilization is high.Find the attached file and let me update how to reach to the root cause of it.

Thanks,
Sajid
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Originally posted by: SystemAdmin

Thats tough with so little information, but off the top of my head, Oracle is your problem :)

But ok, those hdisks, are they regular disks or SAN LUNs? What kind of system is this? What kind of HBAs, MPIO? AIX version.

Details.

I also see a F60run in there, so probably someone is generating some god awful report.

So apart from collecting that info, also grab nmon, create some stats and go over it.
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Originally posted by: sajid1

Many thanks.
I am DBA guy so i have not more idea about the command as you provided kindly guide me in more detail.what actually u need send me with the command.
AIX version 5.3.

How can i relate hdisks to the mount point ex:-vol01,vol02 etc.

Thanks,
Sajid
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Originally posted by: alethad

Another question is to see if your AIX System Admin has looked over the Redbook "Oracle Architecture and Tuning on AIX"
Here's the link below if they haven't. It has several system parameters settings that Oracle suggests for AIX. It will help you in the future so keep a copy close by. I've used it many times and it does get updated.

http://www-03.ibm.com/support/techdocs/atsmastr.nsf/5cb5ed706d254a8186256c71006d2e0a/bae31a51a00fa0018625721f00268dc4/$FILE/Oracle%20Architecture%20and%20Tuning%20on%20AIX%20(v%201.3).pdf

Good luck.
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Originally posted by: SystemAdmin

To see the mount points on the disk:
lspv -l hdisk3
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Originally posted by: sajid1

Hi toddi,

Thanks for giving commands I was looking for this but my doubts is not cleared yet when i am trying to run for hdisk2 and hdisk3 it is giving all the mounts point I can same output.Find below while run.How can i get which mount point is using high CPU utilization.

$ lspv -l hdisk2
hdisk2:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
fslv00 190 190 00..111..51..28..00 /vol01
loglv01 1 1 01..00..00..00..00 N/A
lv00 1 1 01..00..00..00..00 /audit
fslv01 254 254 100..00..00..73..81 /vol02
fslv02 70 70 00..00..60..10..00 /vol03
fslv03 40 40 10..00..00..00..30 /vol04
loglv00 1 1 00..01..00..00..00 N/A
$ lspv -l hdisk3
hdisk3:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
fslv00 190 190 02..100..60..26..02 /vol01
loglv01 1 1 00..01..00..00..00 N/A
lv00 1 1 00..01..00..00..00 /audit
fslv01 254 254 50..00..20..75..109 /vol02
fslv02 70 70 60..00..00..10..00 /vol03
fslv03 40 40 00..09..31..00..00 /vol04
loglv00 1 1 00..01..00..00..00 N/A

Many Thanks,
Sajid
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