While testing the In-Memory feature extensions at the Exadata storage level, I thought I was going to hit a limitation that would prevent a full
Tag: HCC
Not All Chained Rows Are Created Equal: Exadata to the Rescue Part 2
In Part 1 of this post, I pointed out the key difference between two different types of Oracle chained rows — chained rows that were
PGA: An Often Underutilized Resource. And . . . Exadata.
I’ve noticed on many customer systems that PGA memory is underutilized. With parameters available since Oracle Database 12c Release 1 (12.1.0.1/2) such as PGA_AGGREGATE_LIMIT, you
What’s the deal with Exadata HCC and UPDATEs anyway?
Oracle Exadata users have long known that the available compression levels for HCC provide both extreme compression (lower storage footprint) and in many cases improved
All Kinds of Exadata Stuff 