RE: Dell-Oracle-Linux: Anyone else run this...because its not working for us!
- From: "Marquez, Chris" <cmarquez@xxxxxxxxxxxxxxxx>
- To: <Brandon.Allen@xxxxxxxxxxx>, <tomday2@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 9 Dec 2005 13:26:24 -0500
Allen,
>> · Array Subsystem:
>> o PERC 3/DC, Firmware 196T
What is your storage array? We have a PV 220s...although I believe the
additional PERC*/DC (PCI?) cards we added to the servers are the real culprit.
If a PV220 do you run is "split" or "cluster" mode?
>>Maybe there is just a problem with Linux
>>or RAC running on this hardware?
I would like to believe this and I know for sure that our RAC config using OCFS
seemed much "harder" on the disks.
However;
1.)
I have 2 db system almost identical hardware (PERC4/DC & OCFS vs. PERC3/DC &
EXT3) one RAC and the other not and we see the SAME ERRORS.
2.)
Again, when this same hardware was on SuSE7-Oracle8, no RAID, PV220 in "split
mode" we did not have issues.
We run RH3-Oracle9i, RAID5/1, PV220 in "cluster mode" now...so more than just
the OS changed with this config.
3.)
One of my BKP servers RH3-Oracle9i is using the PERC3/DC cards to the PV220s
with no RAID for about two weeks not without issue...then again this db is a
standby and not hit nearly as hard
My point being if it is Linux at fault why would the problem disappear when we
run no RAID config.
If I have not said it before what we get is MegaRaid module errors at the OS
level but we believe the module is cooking on bad hardware (in RAID use).
???
I don't know, abut what Dell concluded says a lot to me...that is why I shared
it.
Chris Marquez
Oracle DBA
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of Allen, Brandon
Sent: Fri 12/9/2005 12:10 PM
To: tomday2@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: RE: Dell-Oracle-Linux: Anyone else run this...because its not working
for us!
I've been running Oracle on the following config with no problems for a couple
years, averaging about 500 IOPS (350 reads/s + 40 writes/sec times 4 due to the
RAID 5 parity = 350+(40*4)=510 IOPS). The write performance is terrible due to
RAID5, but other than that it seems to run great. Maybe there is just a
problem with Linux or RAC running on this hardware?
· Dell 6650
· Win2K3 Enterprise Edition
· 4 Xeon 2Ghz CPUs w/ Hyper-Threading
· 3.5 GB RAM
· Array Subsystem:
o PERC 3/DC, Firmware 196T
o 8 x 73gB drives (10k RPM Ultra320 SCSI)
o Virtual Disk 0 - 2 disks, RAID1 - 68.24GB capacity
o Virtual Disk 1 - 2 disks, RAID1 - 68.24GB capacity
o Virtual Disk 2 - 4 disks, RAID5 - 204.73GB capacity
· Oracle 9.2.0.6 Enterprise Edition
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Thomas Day
Sent: Friday, December 09, 2005 9:42 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: Dell-Oracle-Linux: Anyone else run this...because its not
working for us!
Dell replaced our controller. The Dell technician opined as how the
PERC controller probably wasn't up to the load imposed by Oracle.
This was in a RAID 0 configuration.
I guess that's what you get when you go with the lowest bidder.
Looking forward to honing my recovery techniques to a fine edge --- again.
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