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

 
 Home
 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
 Analysis
 Design
 Implementation
 Oracle Support


 SQL Tuning
 Security

 Oracle UNIX
 Oracle Linux
 Monitoring
 Remote s
upport
 Remote plans
 Remote
services
 Application Server

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

 Remote S
upport  
 Development  

 Implementation


 Consulting Staff
 Consulting Prices
 Help Wanted!

 


 Oracle Posters
 Oracle Books

 Oracle Scripts
 Ion
 Excel-DB  

Don Burleson Blog 


 

 

 


 

 

 

 
 

ORA-12519: TNS:no appropriate service handler found tips

Oracle Error Tips by Burleson Consulting

 

Oracle docs note this about ORA-12519:

ORA-12519: TNS:no appropriate service handler found

Cause: The listener could not find any available service handlers that are appropriate for the client connection.

Action: Run "lsnrctl services" to ensure that the instance(s) have registered with the listener, and are accepting connections.

  • ORA-12519 and Shared Servers:  What has commonly happened here is that moving from a dedicated server to a shared server (MTS) ORA-12519 is thrown even though you have correctly changed al of the necessary parameters. 

    ORA-12519 and listener configuration:  ORA-12519 occurs here because the listener has not been properly set to the default port and the PMON automatic listener registration fails with ORA-12519.  You may also notice with this ORA-12519 error that the RDA LOCAL_LISTENER reads NULL.

    To resolve ORA-12519, register the listener manually after the MTS change if you still wish to use non-default ports.

    ORA-12519 and "processes" parameter:  Also, on Oracle DBA Forums, there is information referring to ORA-12519.  Here, it is pointed out that ORA-12519  can be caused by low "processes" values, which can be resolved by increasing he DB parameter, "parallel_max_servers".  Also, ORA-12519 can be thrown because of DB and client versions which do not match.


  •  

     

    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