| layout | default |
|---|---|
| title | DBA AWR PGA History | Oracle EBS SQL Report |
| description | History of database PGA size and other statistics from v$pgastat in megabytes – Oracle E-Business Suite SQL report |
| keywords | Oracle EBS, Oracle E-Business Suite, SQL report, Blitz Report, Diagnostic Pack, Enginatics, DBA, AWR, PGA, History, dba_hist_snapshot, dba_hist_pgastat |
| permalink | /DBA%20AWR%20PGA%20History/ |
Oracle E-Business Suite SQL report from the Enginatics Library powered by Blitz Report™.
History of database PGA size and other statistics from v$pgastat in megabytes
Date From, Date To, Diagnostic Pack enabled, Container Data
dba_hist_snapshot, dba_hist_pgastat
DBA SGA+PGA Memory Configuration, DBA AWR CPU vs Wait Time Summary, DBA AWR System Time Percentages, DBA AWR Blocking Session Summary, DBA AWR Latch Summary, DBA AWR Wait Class by Time, DBA AWR SQL Performance Summary, DBA AWR Wait Event Summary, DBA AWR System Metrics Summary
Some Oracle EBS SQL reports in this library require functions from the utility package xxen_util. Install it before running the SQL directly against your Oracle EBS database.
| Resource | Link |
|---|---|
| Excel Example Output | DBA AWR PGA History 29-Jul-2018 094718.xlsx |
| Blitz Report™ XML Import | DBA_AWR_PGA_History.xml |
| Full SQL on Enginatics | www.enginatics.com/reports/dba-awr-pga-history/ |
The DBA AWR PGA History report tracks the usage of the Program Global Area (PGA) over time. The PGA is the memory region reserved for each server process to perform non-shared operations, primarily sorting and hashing. Unlike the SGA (which is fixed), the PGA grows and shrinks dynamically. This report helps DBAs understand if the PGA_AGGREGATE_TARGET is sized correctly.
- Memory Leaks: "Why does the database server run out of RAM every Friday?"
- Performance Tuning: "Are we doing too many disk sorts because the PGA is too small?"
- Sizing: "How much memory do we need to allocate to PGA to support 500 concurrent users?"
This report displays historical PGA statistics from AWR.
Key Features:
- Total PGA Allocated: The total amount of memory currently used by all processes.
- Cache Hit %: The percentage of work areas (sorts/hashes) that ran entirely in memory (Optimal) vs. spilling to disk (One-pass/Multipass).
- Over-allocation Count: Number of times the system failed to honor the target limit.
The report queries DBA_HIST_PGASTAT.
Key Tables:
DBA_HIST_PGASTAT: Historical PGA statistics.DBA_HIST_SNAPSHOT: Snapshot timing.
- Stability: Prevents ORA-4030 (out of process memory) errors.
- Performance: Maximizes in-memory sorting, which is orders of magnitude faster than disk sorting.
- Cost Efficiency: Ensures RAM is allocated where it's needed most (SGA vs. PGA).
- 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
© 2026 Enginatics