” B-tree indexes: the default and the most common B-tree cluster indexes: defined specifically for cluster Hash cluster indexes: defined specifically for a hash cluster Global and local indexes: relate to partitioned tables and indexes Reverse key indexes: most useful for Oracle Real Application Clusters applications Bitmap indexes: compact; work best for columns with a small set of values Function-based indexes: contain the precomputed value of a function/expression Domain indexes: specific to an application or cartridge. “ Tips: Bitmap indexes: suitable to complex WHERE clause in SQL statements. “LONG and…
Day: January 6, 2019
[OCM 12C] Managing extended statistics
Oracle Database Online Documentation 12c Release 1 (12.1) -> Database Administration Database -> SQL Tuning Guide Part -> V Optimizer Statistics brunors*The views expressed here are my own and do not represent those of my employer.* Hello, I’m Bruno — a dual citizen of Brazil and Sweden. I bring a global perspective shaped by experiences in both South America and Europe, with a strong focus on collaboration and innovation across cultures. I am a Computer Scientist, PhD Candidate in Information and Communication Technologies, focusing on Data Science and Artificial Intelligence,…
[OCM 12C] Capturing performance statistics
Oracle Database Online Documentation 12c Release 1 (12.1) -> Database Administration Database -> SQL Tuning Guide Part -> V Optimizer Statistics brunors*The views expressed here are my own and do not represent those of my employer.* Hello, I’m Bruno — a dual citizen of Brazil and Sweden. I bring a global perspective shaped by experiences in both South America and Europe, with a strong focus on collaboration and innovation across cultures. I am a Computer Scientist, PhD Candidate in Information and Communication Technologies, focusing on Data Science and Artificial Intelligence,…