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 Metric row cache objects latch contention tips

Oracle Consulting Tips by Burleson


The "row cache objects" is a serialization
latch that protects the access to the data dictionary cache in the SGA. This latch is acquired whenever you are referencing metadata objects in the data dictionary cache.

The Row Cache Objects Latch is a correlated latch to the shared pool latch is the row cache objects latch. The purpose of this latch is to provide data protection for user processes that access the cached data dictionary area within Oracle.

In a nutshell, latch contention for "row cache objects" always signals a dictionary contention issue, and the common solution is to increase the size of the shared pool via the shared_pool_size parameter.

Excessive SQL parsing on objects public synonyms may cause this latch contention and that library cache latches always precede row cache objects latch contention and A latch wait on a row cache object often means that there is a point of contention within the data dictionary. 

The row cache object latch can also indicate SQL with excessive hard parsing or excessive reliance on data dictionary information such as views row-level security, synonyms, etc.  The general solution for row cache latch waits is to increase shared_pool_size.    

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.



Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster


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.