Another useful link.
Thanks

You don’t need to hack SunStorage (it is working fine with VMWare anyway). I followed Kevin suggestion and I found out way to run HCC using standard Linux NFS server. Option “insecure” in NFS configuration will do a trick – see my post for details – http://oracleprof.blogspot.com/2011/11/dnfs-configuration-and-hybrid-column.html

regards,
Marcin

Thanks for the comments.

Thanks for the link.

As soon as I can make some time I’ll probably have a go at installing that on my laptop. As usual, though, life is never perfect – I run VMWare, so I guess I’ll have to do some hacking to get the ZFS simulator into it, I’ve got so much going on in VMWare that I’m not keen to change.

Perhaps you could mount another NFS volume from any other NFS server (even just a simple Linux loopback) to see whether there is any intelligent “discovery” in patch 13041324. I think you’ll find that it will work with any NFS mount via dNFS.

regards,
Marcin

The HCC Exadata storage enforcement has nothing to do with smart scan capable. It has simply to do with a routine in kds.c called kcfis_tablespace_is_on_sage(). I suspect there is a patch now with this code removed to support the Oracle Sept 30 announcement that Oracle-flavored block/file storage supports HCC:

http://www.oracle.com/us/corporate/press/508020

The license guide now reads as quoted below. So if you get the bits that support this new “Open Systems” view of HCC you should also be able to create an NCC tablespace or HCC table in any storage. The customer will have to be his own police.

HCC is in fact an intrinsic RDBMS feature and was fully supported during the 11g Beta on any storage only to be temporarily limited through a couple lines of code in kds.c and then finally to be opened up to only Oracle supplied general purpose file and block storage. I obviously have very strong opinions about Oracle’s move in this matter.

Folks should be aware that the Apress Expert Exadata book covers the fact that HCC decompression does drive cell CPU utilization to a critical level at which point cells “passthru” HCC CUs that are *not* decompressed even during a smart scan.

Features Specific to Exadata, ZFS, and Pillar Axiom 600 Storage Platforms
Hybrid Columnar Compression is a feature of the Enterprise Edition of Oracle Database 11g that is dependent on the underlying storage system. Only Exadata storage, ZFS storage, and Pillar Axiom 600 storage support Hybrid Columnar Compression. On storage platforms other than those previously mentioned, Hybrid Columnar Compression is not available, and no right to use Hybrid Columnar
Compression is granted by a license of the Oracle Database.