HomepageTechnologyOracle DBAGeneral Performance tuning debasis maity in General Performance tuning Oracle Optimizer Cost Calculation from explain plan This post video provide you basic method how oracle calculate cost from explain plan it derives Next Read: RMAN clone from data guard DR to different host and different backup location » debasis maity: 12+ years of rich experience on Database Administrations and on Infrastructure Solution Architect. AWS Certified Solution Architect and Senior Oracle DBA Leave a Comment Related Post Monitor real time active session statistics by ORAPUB tool The tool was devised by Craig from ORAPUB which is excellent to monitor what happens… Cache buffer chain CBC latch simple query to investigate For deep understanding on CBC,please refer to below links:- //www.proligence.com/pres/ioug14/2014_431_Nanda_ppr.pdf and Video tutorial from ORAPUB.… Performance monitoring or tuning tool for SQL query taking long time using various tools like explain plan,sql monitor,awrsqrpt,sqlhc Performance monitoring or tuning tool for SQL query taking long time using various tools …