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тАО07-14-2000 02:39 AM
тАО07-14-2000 02:39 AM
On this array I want to create an oracle database with a total storage of 42 Gb. In this forum and on other places i have read that the best way to create the database, is to create at least two lun?s with crossed primary/alternate and put each lun in a seperate VG for better load balacing of de LV?s created in each VG.
My first question is now: Wich database files must i put in wich LV on wich VG, so that the write load balacing is almost even. The database is oracle 7.3.4
A second question marker is, that the database must run in archive mode and that once a week an full export is created. For this we want to allocate 20Gb total. My idea is to split this in 10Gb each for export and archive. Each 10Gb is a lun = vg = lv. luns has crossed access paths.
The question is now: Is this a good idea and how must i do the cross for the access path in relation to the database luns access paths.
Cees Wielink
Netherlands
Solved! Go to Solution.
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тАО07-14-2000 03:18 AM
тАО07-14-2000 03:18 AM
Re: Oracle database confiruation on a 12H array
Brian
<*(((>< er
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тАО07-14-2000 04:55 AM
тАО07-14-2000 04:55 AM
Re: Oracle database confiruation on a 12H array
it's a good idea to put oracle data files on one LUN and the index files on the other LUN (attchached on different Raid-Controllers).
Also i would put the redo and archive logs on separate disks (not on the AutoRAID) to get best performance.
When you create filesystems into your LUN's have a look at the block size: filesystem and oracle should have the same block size, usually 8192.
To set the block size for the filesystem:
newfs -F vxfs -b 8192 /dev/vgXX/lvolX
Regards
Andrew
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тАО07-15-2000 10:34 AM
тАО07-15-2000 10:34 AM
Re: Oracle database confiruation on a 12H array
stripe VG across all the LUNs,
use both controllers paths as active - interchange primary and secondary links, leave enough space for RAID 1/0 - this is the most important I think, AutoRaid performes much better if it has enough space for RAID 1/0!
It's a good idea to put redos on separate disks.
Use arraydsp to gather performance statistics of an array.
Milan
EuroTel Prague
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тАО07-16-2000 11:09 AM
тАО07-16-2000 11:09 AM
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тАО07-17-2000 07:29 AM
тАО07-17-2000 07:29 AM
Re: Oracle database confiruation on a 12H array
We have an Oracle 8.0.5 database running on a 12H with six 18Gb HDD installed and with all of Oracle running on the 12H though I'm planning to change the log-files to the system-disk as soon as a know a bit more about Oracle and have some time to spare.
If you're interested, I've got a Word document which was created during the setup of our current 12H configuration (in Dutch) using both controllers for better performance. It shows exactly how we did it (and what went wrong as well of course). If you could mail me at MMaanen@computer2000.nl I could send you this file.
Regards,
Maarten van Maanen
Computer 2000
Netherlands