Re : Fwd: ArchiveLogs on NetApps ? -- an update
- From: Hemant K Chitale <hkchital@xxxxxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Thu, 16 Dec 2004 23:46:10 +0800
Just to send out an update on this issue ....
The Linux servers have 2 NIC connecting through two seperate switches in an
Active/Active bonding.
We changed the switch configuration to enable Flow Control and updated the
Intel drivers for the
NICs and switched them to Active/Passing. Then, we got much better
performance -- a 100MB
ArchiveLog written in 8-12 seconds.
Also, the "corrupt block" error on the last ArchiveLog went away in
repeated recovery tests.
Hemant
>Date: Tue, 07 Dec 2004 00:18:08 +0800
>To: oracle-l@xxxxxxxxxxxxx
>From: Hemant K Chitale <hkchital@xxxxxxxxxxxxxx>
>Subject: ArchiveLogs on NetApps ?
>
>
>
>We've just begun our first NetApps [9iRAC on Linux] implementation.
>
>What I've found in testing so far is
>
> a) Writing ArchiveLogs to a NetApps Filer volume seems to be very slow
> [5min for a 100MB
>logfile against 30seconds on local disks] Do the ArchiveLog Dest volumes
>have to be mounted
>with the same NFS options as the Database Files volumes ?
>
>b) Testing recoveries using SNAP CREATE and SNAP RESTORE we find that we
>frequently
>encounter a corrupt block in the last ArchiveLog being written to the
>ArchiveLog Dest volume.
>Any ideas why ?
>
>Backup :
> BEGIN BACKUP
> Snap Create Database Files Volume
> END BACKUP ;; ARCHIVE LOG CURRENT a few times
> Snap Create ArchiveLog Files Volume
>
>Recovery :
> Snap Restore Database Files Volume
> Snap Restore ArchiveLog Files Volume
> RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL
>
>
>
>
>Hemant K Chitale
>http://web.singnet.com.sg/~hkchital
Hemant K Chitale
http://web.singnet.com.sg/~hkchital
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