1. System Overview
  2. What's New in Oracle Exadata Database Machine
  3. New Features for Oracle Exadata System Software Release 19.x
  4. What's New in Oracle Exadata Database Machine 19.3.0
  5. Smart In-memory Columnar Cache with Chained Rows

7.1.9 Smart In-memory Columnar Cache with Chained Rows

Wide tables, large rows or row migration on update can create chained rows. Smart In-memory Columnar Cache works by creating optimized Single Instruction Multiple Data (SIMD) representation for chained rows when the head and tail pieces fit in the same 1 MB region. This results in up to 3x faster scans for wide tables.

Minimum requirements:

  • Oracle Exadata System Software release 19.3.0

Parent topic: What's New in Oracle Exadata Database Machine 19.3.0