12g Says Goodbye to Raw
August 7th, 2008 by The Oracle AlchemistA colleague sent me an interesting note today. Specifically, Metalink Note 578455.1, which announces that Oracle 12g will not support raw volumes for Datafiles, controlfiles, redo logs, OR voting disks and OCR.
Those of us acquainted with RAC might be shouting “WHAT?!?!” at about this time. This is because without raw volumes, our only choices for OCR and voting disk placement seems to be a CFS (such as OCFS).
However, wording in the Metalink note indicates that ASM will be able to support the OCR and voting disk (“and other database files”) in 12g. The note hints at broader support for NFS in 12g as well.
August 7th, 2008 at 5:40 pm
Ehr.. what the hack? In a time that we are walking away from NAS (read: NFS) an moving to SAN with ocfs2-filesystems, THIS is actually going to happen?
While ocfs2 is unstable as a cardhouse (I tried mounting an 1GB Oracle VM virtual machine image on ocfs2 through the loopback option on RHEL5.2 – CRASH!! Several times…) and dumped into the hands of the OSS-community, Oracle ™ is making this move? I’m flabbergasted…
And what about ASM?
August 7th, 2008 at 5:44 pm
I’m willing to bed ASM will be the big one going forward…meaning you build ASM using either block devices (non-Linux) or using asmlib (linux), then store everything, including the OCR and voting disk, on ASM. Though that’s not possible now, the Metalink note says that the OCR and voting disk will be able to go on ASM in 12G.
August 9th, 2008 at 11:38 pm
[...] was browsing through the OraNA.info posts and found an interesting post from Steve Karam which referred to a metalink Note:578455.1 – Announcement of De-Support of RAW [...]
August 15th, 2008 at 1:27 pm
[...] and Steve Karam, the Oracle Cartoonist Alchemist reports, 12g Says Goodbye to Raw: “. . . Oracle 12g will not support raw volumes for Datafiles, controlfiles, [...]
June 1st, 2009 at 11:55 am
Odd. Document did not come up.
however, info appears valid. applies to major releases after 11.1
try ML 754305.1 for info.
HTH,
Ross
rmohanx a t yahoo d 0 t com
July 1st, 2009 at 4:48 pm
You may wish to read 754305.1 with regards to the use of raw devices in 11.2.
April 25th, 2010 at 3:07 am
I’m willing to bed ASM will be the big one going forward…meaning you build ASM using either block devices (non-Linux) or using asmlib (linux), then store everything, including the OCR and voting disk, on ASM. Though that’s not possible now, the Metalink note says that the OCR and voting disk will be able to go on ASM in 12G.