DBA SGA Wait Event Summary (active session history) – Oracle EBS SQL Report
Oracle E-Business Suite SQL report from the Enginatics Library powered by Blitz Report™. Oracle EBS module: Database Administration · all Database Administration reports
Overview
Wait event and CPU usage summary from the SGA active session history.
Run this report in Excel in seconds: download Blitz Report™ free (your first 30 reports are free) or try it in the online demo.
Report Parameters
From Time, To Time, By Instance, By Event, Session Type
Oracle EBS Tables Used
Report Categories
Related Reports
DBA SGA Blocking Session Summary, DBA AWR Blocking Session Summary, DBA AWR Active Session History, DBA SGA CPU Load (active session history), DBA SGA Active Session History, Blitz Report History, DBA SGA SQL Performance Summary, DBA Sessions, DBA ORDS Configuration Validation
Running This SQL Without Blitz Report
The SQL source can be run in any SQL client. Some Oracle EBS SQL reports in this library use functions from the utility package xxen_util – install it first. Blitz Report™ adds parameters, Excel output with pivots, scheduling and security on top.
Download & Import Options
| Resource | Link |
|---|---|
| Excel Example Output | DBA SGA Wait Event Summary (active session history) 23-Sep-2025 105219.xlsx |
| Blitz Report™ XML Import | DBA_SGA_Wait_Event_Summary_active_session_history.xml |
| SQL Source | DBA SGA Wait Event Summary (active session history).sql |
| Full Report on Enginatics | www.enginatics.com/reports/dba-sga-wait-event-summary-active-session-history/ |
Case Study & Technical Analysis
Abstract
The DBA SGA Wait Event Summary (active session history) report aggregates wait event data from the in-memory ASH buffer to provide a “Top Wait Events” profile for the immediate past. Unlike the standard AWR “Top 5 Timed Events,” which covers a full hour, this report can be scoped to the last 5, 10, or 30 minutes, providing high-resolution visibility into transient performance spikes.
Technical Analysis
Core Logic
- Aggregation: Sums the number of active session samples for each
EVENT(orWAIT_CLASS). - Time Basis: Since ASH samples once per second, the count of samples roughly equates to “seconds spent waiting” (DB Time).
- CPU vs. Wait: Clearly distinguishes between time spent on CPU (working) versus time spent waiting for resources (I/O, locks, latches).
Key View
GV$ACTIVE_SESSION_HISTORY: The source of the wait event samples.
Operational Use Cases
- Incident Response: During a slowdown, running this report for the “Last 10 Minutes” immediately reveals if the bottleneck is I/O (
db file sequential read), Concurrency (enq: TX), or CPU. - Load Profiling: Understanding the “personality” of the workload (e.g., is it read-intensive or commit-intensive?).
Useful Links
- Blitz Report™ – World’s Fastest Oracle EBS Reporting Tool
- Oracle Discoverer Replacement – Import Worksheets into Blitz Report™
- Oracle EBS Reporting Toolkits by Blitz Report™
- Blitz Report™ FAQ & Community Q&A
- Supply Chain Hub by Blitz Report™
- Blitz Report™ Customer Case Studies
- Oracle EBS Reporting Blog
- Oracle EBS Reporting Resource Centre
© Enginatics GmbH