Call (800) 766-1884 for Oracle support & training
Free Oracle Tips


Oracle Consulting Support
Oracle Upgrades
Use New Oracle Features
Oracle Replication Support
Oracle Training
Remote Oracle DBA
System Documentation
Oracle Tips
Oracle Performance
 

Free Oracle Tips


 

HTML Text

BC Oracle tuning

Oracle training

Oracle support

Remote Oracle

 

 

 
 

Oracle Tips by Burleson Consulting
 

UNIX interaction with the Multi-threaded Server

As you may know, the Multi-threaded server (MTS) was developed in Oracle7 to provide an alternative to a dedicated server connection for Oracle processes.  Instead of each connection spawning a UNIX PID and a UNIX RAM region for PGA memory, the MTS allows for us to share pre-spawned Oracle connections. These pre-spawned connections share RAM memory by using the Oracle large pool.  By sharing connections and RAM memory, Oracle connections can happen faster and with less overall resource consumption on the server.

When using the MTS, Oracle allocates memory in a shared region called the User Global Area, or UGA.  If you have the large_pool_size defined in you init.ora file, then the UGA memory will be allocated from the large pool.  If you do not define a large pool, then the UGA memory will be allocated from the Oracle shared pool.  Oracle always recommends that you allocate a large pool if you are using the MTS.


The above is an excerpt from the "Oracle UNIX Administration Handbook" by Oracle press, authored by Donald K. Burleson.

 

Download your Oracle scripts now:

www.oracle-script.com

The definitive Oracle Script collection for every Oracle professional DBA

 

 

  
 

Oracle performance tuning software 
 
 
 
 

Oracle performance tuning book

 

 
 
 
Oracle performance Tuning 10g reference poster
 
 
 
Oracle training in Linux commands
 
Oracle training Excel
 
Oracle training & performance tuning books
 

 

   

Copyright © 1996 -  2014 by Burleson. All rights reserved.

Oracle® is the registered trademark of Oracle Corporation. 

Hit Counter