https://ora-base.com/tags/performance/ Recent content in Performance on ora-base Hugo -- 0.156.0 en-us Tue, 03 Mar 2026 00:00:00 +0000 https://ora-base.com/awr-diagnostics/awr-exadata-interpretation-case-study/ Tue, 03 Mar 2026 00:00:00 +0000 https://ora-base.com/awr-diagnostics/awr-exadata-interpretation-case-study/ A realistic fabricated Exadata AWR report with a deliberately embedded performance problem — walk through each section methodically, identify every red flag, and arrive at the root cause and fix. Essential reading for Oracle DBAs who want to move beyond guesswork. https://ora-base.com/awr-diagnostics/awr-ash-analysis-methodology/ Sun, 01 Mar 2026 00:00:00 +0000 https://ora-base.com/awr-diagnostics/awr-ash-analysis-methodology/ A structured methodology for using Oracle AWR and ASH to diagnose performance problems — from DB Time decomposition to wait event analysis and SQL identification https://ora-base.com/exacc/exacc-iorm-and-storage-tuning/ Sun, 01 Mar 2026 00:00:00 +0000 https://ora-base.com/exacc/exacc-iorm-and-storage-tuning/ How to configure and tune IORM, Smart Flash Cache, and storage-level performance on Exadata Cloud@Customer when multiple VM Clusters share storage resources https://ora-base.com/in-memory/oracle-in-memory-column-store/ Sun, 01 Mar 2026 00:00:00 +0000 https://ora-base.com/in-memory/oracle-in-memory-column-store/ A deep dive into Oracle Database In-Memory — the In-Memory Column Store architecture, how objects are populated, SIMD-accelerated scan mechanics, and tuning strategies for hybrid OLTP/analytical workloads https://ora-base.com/partitioning/partition-pruning-and-vldb-design/ Sun, 01 Mar 2026 00:00:00 +0000 https://ora-base.com/partitioning/partition-pruning-and-vldb-design/ How Oracle partition pruning works at the optimizer level, common scenarios where pruning fails silently, and design patterns for effective VLDB partitioning strategies https://ora-base.com/awr-diagnostics/sql-monitor-and-real-time-sql-plan/ Sun, 01 Mar 2026 00:00:00 +0000 https://ora-base.com/awr-diagnostics/sql-monitor-and-real-time-sql-plan/ How to use Oracle SQL Monitor for real-time and historical query diagnostics — generating active reports, interpreting plan statistics, and diagnosing parallel execution issues https://ora-base.com/exadata/smart-scan/ Sat, 21 Feb 2026 00:00:00 +0000 https://ora-base.com/exadata/smart-scan/ <p>If you are running workloads on Oracle Exadata, you are likely sitting on a goldmine of performance capability. The most significant differentiator between Exadata and traditional storage architectures is a feature called <strong>Smart Scan</strong> (also known as Cell Offload Processing).</p> <p>Instead of treating storage as dumb disks that just serve blocks to the database, Exadata pushes SQL processing down to the storage tier. This article explains how Smart Scan works, how to verify it, and how to control its behaviour for testing.</p>