increase the 'size of the cache pending' of our cube ASO to capture whole database in memory?
Happy new year everyone,
We want to take full advantage of our 54 GB of free memory on our server Exalytics X 4.
From this site, I read more in anticipation of the ASO cache size will reduce the disk i/o.
The default / .dat file size of data from our database of the ASO is 9.9 GB with more 100 million cells entry level.
We should increase the 'size of the cache in waiting"our ASO to 9.9 GB cube so that the entire .dat will be cached?
Thank you.
===============
PS. Here's what I found in ASO Tuning white paper, which seems to recommend 512 MB or 1 GB.
ASO cache size has an effect on the performance of loading data. For
small databases with cells of entry 2 million or less, the default
ASO cache size to 32 MB is sufficient. For a larger database
with 20 million cells, 64 or 128 MB of cache is more appropriate.
A database with 1 billion cells or more, the size of the cache can
be placed as high as 512 MB or 1 GB if memory permits.
Put all of the memory base looks really cool, but my experience is that in most cases it is not necessary. In my experience, the benefit of the ASO cache decreases rapidly. Here's an example I wrote about running aggregations:
http://Essbase-day.blogspot.com/2015/09/calcparallel-with-ASO.html
Tags: Business Intelligence
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