Tags » Partitioning

CCI Partitioning Part 1: Rowgroup Elimination Fragmentation

This is part 1 of a series on columnstore index partitioning. The focus of this post is on rowgroup elimination.

Defining Fragmentation for CCIs… 1,808 more words


Dropping an Empty Partition Without "Update Indexes" Necessary

As we know  the ‘update indexes’ clause is used  to drop the local indexes and update the global index  when we drop a partition. So the indexes will still be VALID” 223 more words


How to find the Oldest and Newest Interval Partition

I was required to find the oldest and newest interval partition to be able to do some automated maintenance, but found query USER_TAB_PARTITIONS, ALL_TAB_PARTITIONS and DBA_TAB_PARTITIONS was a bit tricky as the HIGH_VALUE is a LONG data type :( 534 more words


Adding Identity to an existing column

A friend had an interesting problem today. A really big table (multiple millions of rows) and no primary key. He then ran into an issue where he had to have one. 264 more words

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Oracle 12c R2 - Partitioning İyileştirmeleri

Herkese Selam,

Bu yazıda Oracle 12c R2 ile beraber gelen partitioning konusundaki iyileştirmelerden bahsedeceğim umarım farkındalık anlamında faydalı bir yazı olur.

Partitioning bilindiği üzere Oracle’ın en temel ve en çok beğendiğim özelliklerinden biri. 532 more words

12.2 Partitions

At the end of my presentation to the UKOUG Database SIG yesterday I summed up (most) of points I’d made with a slide making the claim… 1,996 more words