1.3 The Oracle Database In-Memory SolutionThe Oracle Database In-Memory (Database In-Memory) feature set includes the In-Memory Column Store (IM column store), advanced query optimizations, and availability solutions.The Database In-Memory optimizations enable analytic queries to run orders of magnitude faster on data warehouses and mixed-use databases.This section contains the following topics:What Is Database In-Memory?The Database In-Memory feature set includes the IM column store, advanced query optimizations, and availability solutions. These features combine to accelerate analytic queries by orders of magnitude without sacrificing OLTP performance or availability.Improved Performance for Analytic QueriesThe compressed columnar format enables faster scans, queries, joins, and aggregates.Improved Performance for Mixed WorkloadsAlthough OLTP applications do not benefit from accessing data in the IM column store, the dual-memory format can indirectly improve OLTP performance.High Availability SupportThe IM column store is fully integrated into Oracle Database. All High Availability features are supported.Ease of AdoptionDatabase In-Memory is simple to implement, and requires no application changes.