Anyone have on opinion on the usage of SECUREFILE LOBs for spatial data?
Hi folks,
From everything I read the usage of SECUREFILE LOBs over BASICFILE LOBs appears to be a nobrainer.
http://www.oracle.com/technetwork/database/options/compression/overview/securefiles-131281.pdf
Yet the default table creation remains set to create BASICFILE LOBs so my 11g spatial data is still sitting in BASICFILE LOBs (also I need to push it to and from 10g for the moment).
Should we all be changing over to SECUREFILE LOB storage as a matter of course on 11g? Is there a big payoff for VARRAY storage beyond compression? A little payoff?
Oracle says SECUREFILE LOBs "dramatically improve performance". Hey, I want some of that!
http://www.oracle.com/newsletters/sap/products/database/oradb11g-features.html
But yet there just has not been much traffic on the topic.
Pro Oracle Spatial mentions weakly on page 250 that
"Secure File LOBs are expected to be faster than BASIC LOBs".
but seems to only be referring to the spatial index.
Here Godfrind says to use them with points clouds but only trumpets the compression aspect.
http://www.ncg.knaw.nl/Studiedagen/09PointClouds/presentations/PointCloud_14_AlbertGodfrind.pdf
For those of us using ArcSDE, its pretty easy to add the SECUREFILE LOB keyword to the dbtune keyword that governs creation of the spatial column. But not a peep on the topic from the ESRI folks that I can find.
Anyone have any experiences or opinions to share? I am hoping to finally leave 10g behind one day this year and putting together a migration plan. Should converting the LOBs be a first day bullet item or just something to consider sometime down the road?
Thanks!
Paul