” 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 brunorsHi! I am Bruno, a Brazilian born and bred, and I am also a naturalized Swedish citizen. I am a former Oracle ACE and, to keep up with academic research, I am a Computer Scientist with an MSc in Data Science and another MSc in Software Engineering. I have over ten years of experience working with companies such as IBM, Epico Tech, and Playtech across three different countries (Brazil,…
[OCM 12C] Capturing performance statistics
Oracle Database Online Documentation 12c Release 1 (12.1) -> Database Administration Database -> SQL Tuning Guide Part -> V Optimizer Statistics brunorsHi! I am Bruno, a Brazilian born and bred, and I am also a naturalized Swedish citizen. I am a former Oracle ACE and, to keep up with academic research, I am a Computer Scientist with an MSc in Data Science and another MSc in Software Engineering. I have over ten years of experience working with companies such as IBM, Epico Tech, and Playtech across three different countries (Brazil,…