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 








ORA-03120: two-task conversion routine: integer overflow tips

Oracle Error Tips by Stephanie F.


The Oracle docs note this on the ORA-03120 error:

ORA-03120 two-task conversion routine: integer overflow
Cause: An integer value in an internal Oracle structure overflowed when being sent or received over a heterogeneous connection. This can happen when an invalid buffer length or too great a row count is specified. It usually indicates a bug in the user application. 

Action: Check parameters to Oracle calls. If the problem recurs, reduce all integer parameters, column values not included, to less than 32767.

Internet sources indicate that ORA-03120 is associated with bug 5671074 on Oracle Enterprise Edition; Version, occurring on any platform:

After applying the patchset, compilation of functions and/or materialized view refreshes that reference remote databases via database links start failing with:

ORA-04052: error occurred when looking up remote object OMS.PREMISE@JEAUSER_OMPR_L.WORLD
ORA-00604: error occurred at recursive SQL level 1
ORA-03120: two-task conversion routine: integer overflow
ORA-02063: preceding line from

Bug 5671074 "ORA-4052/ORA-3106 on Create / Refresh of Materialized View", can cause this problem. Contrary to the bug abstract and description, this bug does not just apply to materialized view creation and refresh. It can occur for any PL/SQL that references a remote object via database link where the 'Endianness' of the two platforms differs. If one platform is 'Big-Endian', and another platform is 'Little-Endian', then this bug can be triggered between them.  A list of the endianness of different platforms can be obtained from the following query (note that the v$transportable_platform view is only available in 10.1 and above):

SQL> select * from v$transportable_platform;

----------- ------------------------------ --------------
1 Solaris[tm] OE (32-bit) Big
2 Solaris[tm] OE (64-bit) Big
7 Microsoft Windows NT Little
10 Linux IA (32-bit) Little
6 AIX-Based Systems (64-bit) Big
3 HP-UX (64-bit) Big
5 HP Tru64 UNIX Little
4 HP-UX IA (64-bit) Big
11 Linux IA (64-bit) Little
15 HP Open VMS Little
8 Microsoft Windows IA (64-bit) Little
9 IBM zSeries Based Linux Big
13 Linux 64-bit for AMD Little
16 Apple Mac OS Big
12 Microsoft Windows 64-bit for AMD Little

To resolve ORA-03120, this solution is given:

To implement the solution, it will be necessary to apply the one-off patch for Bug 5671074 to the database. One-off patches to for most platforms are already available for download on MOSC. Bug 5671074 to the database. One-off patches to for most platforms are already available for download on MOSC.

You may also find this link helpful, as it references ORA-03120



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