oracle performance

oracle bitmap index

Oracle Bitmap Index Unleashed: Optimization Made Easy

Oracle provides this nice data retrieving mechanism for low occurrence of DML operation tables. oracle bitmap index is proposed for low cardinality columns. Those kinds of columns in a query ...

Asiri Gunasena

October 2, 2023

create an index in oracle

19 New Ways to Create an Index in Oracle

This article explains how to create an index in Oracle and the Types of indexes making considerable performance improvements. Here are 19 ways to create an index and below explain ...

Asiri Gunasena

September 26, 2023

Oracle Function Based Index

How to Add an Oracle Function Based Index: Unexpected Tips

Oracle function based index enhances the performance with queries that retrieve data using a custom index according to usage. This will improve the performance when consists of function or expression ...

Asiri Gunasena

September 14, 2023

Oracle EXISTS vs IN

EXISTS Vs IN | How To Change Performance In Subqueries

Performance improvement is not a stick into theory. It’s the same with EXISTS vs IN keywords. It’s practical. In certain cases, EXISTS does well for subqueries rather than IN. In ...

Asiri Gunasena

March 1, 2023

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