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Hot Swap
Can we Hot Swap a drive when the Database is UP and running?
Database is in Archivelog mode
If so how can we hot swap a drive which is mirrored what steps we need to follow
Thanks,
sanga
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Re: Hot Swap
Originally posted by sanga
Can we Hot Swap a drive when the Database is UP and running?
Database is in Archivelog mode
If so how can we hot swap a drive which is mirrored what steps we need to follow
Thanks,
On a protected device, sure. If your device is RAID 1, 0+1, or 5, you can replace disks on the fly with no problem. The steps vary according to your OS and volume manager software, but in general they are:
1. pull out old disk
2. put in new disk
3. tell your volume manager to resync the disk.
If you have hot spares defined, things will be a little different because you essentially have to do the whole process twice.
Jeff Hunter
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Hi marist,
Thanks for the reply
This is what happened a few days ago.
One of our unix Guy Hot swapped a drive and we started experiencing problems like corruption in the database.
Iam sure the disks are mirrored, but one of the database had datafiles on the same volumne and was down and was not affected, but all the datafiles, control files got corrupted and we had to perform PIT database recovery on all databases on that volume, except for the one in which was down.
Do we need to take any precaution in future when we hot swap a drive at the database end so that is does not occur again
We are using Solaris and Veritas volume manager
Thanks again
sanga
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Are you saying that all other filesystems had corrupt files except for the filesystem that had a bad disk?
Jeff Hunter
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No the one which had a Bad disk had corruption
sanga
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Hmmm. Never saw that with Veritas and Solaris. Maybe your disks are RAID 0?
Jeff Hunter
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Can we put the tablespace in Backup mode,Hot swap and put the tablespace in Normal mode would that be helpfull
Thanks
sanga
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Originally posted by sanga
Can we put the tablespace in Backup mode,Hot swap and put the tablespace in Normal mode would that be helpfull
Thanks
Why would that help?
Jeff Hunter
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Iam not sure Just a thought crossed my mind
Thanks
sanga
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That was a wrong thought that crossed your mind.
Jurij Modic
ASCII a stupid question, get a stupid ANSI
24 hours in a day .... 24 beer in a case .... coincidence?
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