Call now: 252-767-6166  
Oracle Training Oracle Support Development Oracle Apps

 E-mail Us
 Oracle Articles
New Oracle Articles

 Oracle Training
 Oracle Tips

 Oracle Forum
 Class Catalog

 Remote DBA
 Oracle Tuning
 Emergency 911
 RAC Support
 Apps Support
 Oracle Support

 SQL Tuning

 Oracle UNIX
 Oracle Linux
 Remote s
 Remote plans
 Application Server

 Oracle Forms
 Oracle Portal
 App Upgrades
 SQL Server
 Oracle Concepts
 Software Support

 Remote S


 Consulting Staff
 Consulting Prices
 Help Wanted!


 Oracle Posters
 Oracle Books

 Oracle Scripts

Don Burleson Blog 







Oracle Pre-upgrade Utility Tips

Oracle Database Tips by Donald BurlesonJune 13, 2015

The Oracle pre-upgrade utility performs a simple verification of the major database components prior to running a database and dictionary upgrade. 

You can see the Oracle pre-install utility in your rdbms/admin directory:


You can run the Oracle pre-upgrade utility from SQL*Plus:

SQL > connect sys/xxx as sysdba

SQL> spool preupgradeutility.txt  
SQL > @$ORACLE_HOME/rdbms/admin/utlu112i.sql  
SQL > spool off

The Oracle pre-upgrade utility is great for beginners because if verifies some important pre-existing conditions for an Oracle upgrade:

  • Inspects your initialization parameter for the pre-install checklist, detecting hidden and deprecated parameters that will not work in the upgraded release.  The pre-upgrade utility also detects too-small values for important pool parameters (e.g. java_pool_size)
  •  Verifies the existence and sizing for your system, sysaux and temp tablespaces.
  • Verifies that you have created valid optimizer statistics (using dbms_stats), detecting "stale" statistics.  BEWARE:  If you have no problems with SQL execution plans, you may not want to re-analyze your statistics.  

The Oracle pre-install utility is not a full replacement for the pre-upgrade manual and checklist, because it does not detect missing parameters and new settings, but the Oracle pre-upgrade utility does provide a minimal check.  

MOSC note 884522.1 describes the details for using Oracle Pre-upgrade Utility.  

An Oracle upgrade is still tricky and should not be attempted by an inexperienced DBA.  For a reliable and certified Oracle upgrade, BC can provide remote and on-site Oracle upgrades in just a few hours.

Get the Complete
Oracle SQL Tuning Information 

The landmark book "Advanced Oracle SQL Tuning  The Definitive Reference"  is filled with valuable information on Oracle SQL Tuning. This book includes scripts and tools to hypercharge Oracle 11g performance and you can buy it for 30% off directly from the publisher.




Burleson is the American Team

Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications.

Errata?  Oracle technology is changing and we strive to update our BC Oracle support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:  

and include the URL for the page.


Burleson Consulting

The Oracle of Database Support

Oracle Performance Tuning

Remote DBA Services


Copyright © 1996 -  2020

All rights reserved by Burleson

Oracle ® is the registered trademark of Oracle Corporation.



Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster