Articles tagged Defragmentation

16 June 2016
16 June 2016

Defragmentation Can Degrade Query Performance

As data in tables is updated and / or deleted, pockets of empty space can be created, leading to fragmented free space. This free space is wasted space as it is insufficient to hold new data. Moreover, it can impact performance of the database as a higher number of sparsely-populated blocks need to be visited. Oracle 11g introduced online segment… Read more