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README.md

layout default
title DBA AWR Tablespace Usage | Oracle EBS SQL Report
description Tablespace usage over time from the AWR – Oracle E-Business Suite SQL report
keywords Oracle EBS, Oracle E-Business Suite, SQL report, Blitz Report, Diagnostic Pack, Enginatics, DBA, AWR, Tablespace, Usage, v$parameter, v$database, dba_hist_tbspc_space_usage
permalink /DBA%20AWR%20Tablespace%20Usage/

DBA AWR Tablespace Usage – Oracle EBS SQL Report

Oracle E-Business Suite SQL report from the Enginatics Library powered by Blitz Report™.

Overview

Tablespace usage over time from the AWR

Report Parameters

Date From, Diagnostic Pack enabled, Container Data

Oracle EBS Tables Used

v$parameter, v$database, dba_hist_tbspc_space_usage, ts$

Report Categories

Diagnostic Pack, Enginatics

Related Reports

DBA SGA+PGA Memory Configuration, DBA AWR System Metrics Summary, DBA Tablespace Usage, DBA AWR Active Session History, DBA AWR Settings, DBA Feature Usage Statistics, DBA AWR SQL Execution Plan History, DBA AWR SQL Performance Summary, DBA SGA Active Session History

Running This SQL Without Blitz Report

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.

Download & Import Options

Resource Link
Excel Example Output DBA AWR Tablespace Usage 18-Jan-2018 223607.xlsx
Blitz Report™ XML Import DBA_AWR_Tablespace_Usage.xml
Full SQL on Enginatics www.enginatics.com/reports/dba-awr-tablespace-usage/

Executive Summary

The DBA AWR Tablespace Usage report tracks the historical growth of database storage. Unlike real-time checks that only show current usage, this report uses AWR history to show trends. This is essential for capacity planning, allowing DBAs to predict when a tablespace will fill up based on its growth rate over the last month or year.

Business Challenge

  • Capacity Planning: "When will we need to buy more disk storage?"
  • Budgeting: "How much storage did the 'Archive' tablespace consume last year?"
  • Anomaly Detection: "Why did the UNDO tablespace suddenly grow by 50GB yesterday?"

Solution

This report displays the used size of tablespaces over time.

Key Features:

  • Used Space: The amount of space actually occupied by data.
  • Allocated Space: The size of the datafiles.
  • Growth Trend: By comparing snapshots, you can calculate the daily growth rate.

Architecture

The report queries DBA_HIST_TBSPC_SPACE_USAGE.

Key Tables:

  • DBA_HIST_TBSPC_SPACE_USAGE: Historical tablespace usage metrics.
  • TS$: Tablespace metadata.

Impact

  • Uptime: Prevents outages caused by tablespaces reaching 100% capacity.
  • Cost Control: Helps justify storage purchases and identify wasted space.
  • Proactive Management: Allows DBAs to add space during maintenance windows rather than in a panic during business hours.

Useful Links

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