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тАО10-01-2010 08:40 AM
тАО10-01-2010 08:40 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
From what I can see here:
-first point is you are still using legacy DSFs in /dev/[r]/dsk - if you are migrated to 11.31, you should really start using the new agile DSFs in /dev/[r]disk/ - I don't think will have any impact on performance but is good practice
- its also not good practice to have VGs with only one LUN, as this absolutely guarantees you will only ever hit one controller on the EVA - you should always have at least 2 LUNs in a VG and then strip across those so you get the benefit of both controllers - but again, if that's how things were setup before its not the source of your problem
So as I said at the start of my post - checkout the config of the filesystems you are reading data off...
I am an HPE Employee
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тАО10-01-2010 09:58 AM
тАО10-01-2010 09:58 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
They are the same FS setup, but having 3 volume groups and several Luns..
Do you want to see the specifics ..
Yes I know about the DSF names...
But as you say, no impact, and therefore no focus right now.
regards Martin ..
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тАО10-04-2010 05:02 AM
тАО10-04-2010 05:02 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
So, my point is to make sure you've reviewed this setting on both servers.
Look for the paper from HP titled
"Running Oracle Database 10g or 11g on an HP-UX ccNUMA-based server", subtitled "Updated for Oracle 11gR2 and HPUX 11i v3.
The bottom of the documents id info:
4AA2-4194ENW, Created January 2009; Updated September 2010, Rev. #1
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тАО10-05-2010 04:14 AM
тАО10-05-2010 04:14 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
suggestions are still welcome.
STATUS.:
We still have the same problem.
The latest action, was to follow the advice on the EVA side, for the /exp mount point, without any improvement in dump / backup time.
Right now I will start a formal HPUX case at the call logging facility, and eventually post any results here.
The customer is still suffering backup time into produktion time in the morning (up until 11:00AM)
Regards Martin R├Г┬╕nde Andersen
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тАО10-05-2010 04:34 AM
тАО10-05-2010 04:34 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
Did you setup, both the "hp-ux 11.23" rx6600 and the new "hp-ux 11.31" rx6600 ?
Anyway, show us a sar -d 1 100 of the "before 24h00 backup" on both systems i.e of both the "RMAN backup BEFORE:" and the "RMAN backup AFTER:" and this taken at the same time, i.e. f.e. when the backup was allready running for 30 minutes.
Greetz,
Chris
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тАО10-05-2010 11:54 PM
тАО10-05-2010 11:54 PM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
I have testet the mount options for /exp.
mincache=direct,convosync=dir
ect with no change in the behaviour described above.
I have opened a HPUX sw call at HP
Regards Martin R├Г┬╕nde Andersen
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тАО10-07-2010 12:36 AM
тАО10-07-2010 12:36 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
PHKL_40627 11.31 Buffer cache cumulative patch
PHKL_39594 11.31 vfs_bio QoS patch
PHKL_39594 was added when we upgraded to 11.31 Sep09.
PHKL_40627 , requires reboot, and I have requested a service window at customer. Presumeably, I will get one the 15-oct--2010.
I'll be back with results then.
Regards Martin R├Г┬╕nde Andersen
PS, in the meantime I will change all volume groups to "Persistant DSF" (/dev/disk/disk###), and no pvlinks (Alternate Link ) in vg definitions.
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тАО10-07-2010 12:39 AM
тАО10-07-2010 12:39 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
I can dig out 1 minute interval glance outputs, from BEFORE (11.23) and AFTER (11.31) , will that satify your request. ?
rgds Martin R. A.
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тАО10-07-2010 03:52 AM
тАО10-07-2010 03:52 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
> I can dig out 1 minute interval glance
> outputs, from BEFORE (11.23) and AFTER
> (11.31) , will that satify your request. ?
No. ;)
Greetz,
Chris
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тАО10-07-2010 04:04 AM
тАО10-07-2010 04:04 AM
Re: Degraded backup and Oracle dump performance after 11.23 to 11.31 upgrade
I will make a "sar -d 1 100" for you on 11.31, tonight.
Martin