I'm not an Oracle expert but I don't think Oracle checksumming can correct data. If you have ZFS checksums enabled, and you're mirroring in your zpools, then ZFS can self-correct as long the checksum on the other half of the mirror is good.
Mertol Ozyoney wrote: > Don't take my words as an expert advice, as I am newbie when it comes to > ZFS. > > If I am not mistaken, if you are only using Oracle on the particular Zpol, > Oracle Checksum offers better protection against data corruption. > You can disable ZFS checksums. > > Best regards > Mertol > > > Mertol Ozyoney > Storage Practice - Sales Manager > > Sun Microsystems, TR > Istanbul TR > Phone +902123352200 > Mobile +905339310752 > Fax +902123352222 > Email [EMAIL PROTECTED] > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Scott Macdonald - > Sun Microsystem > Sent: 01 Şubat 2008 Cuma 15:31 > To: zfs-discuss@opensolaris.org; [EMAIL PROTECTED] > Subject: [zfs-discuss] Case #65841812 > > Below is my customers issue. I am stuck on this one. I would appreciate > if someone could help me out on this. Thanks in advance! > > > > ZFS Checksum feature: > > I/O checksum is one of the main ZFS features; however, there is also > block checksum done by Oracle. This is > good when utilizing UFS since it does not do checksums, but with ZFS it > can be a waste of CPU time. > Suggestions have been made to change the Oracle db_block_checksum > parameter to false which may give > Significant performance gain on ZFS. > > What are Sun's stance and/or suggestions on making this change on the > ZFS side as well as making the changes on the Oracle side. > > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
