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-30926: unable to get a stable set of rows in the source tables tips

Oracle Error Tips by Stephanie F.


The Oracle docs note this on the ora-30926 error:

ORA-30926: unable to get a stable set of rows in the source tables
Cause: A stable set of rows could not be got because of large dml activity or a non-deterministic where clause.
Action: Remove any non-deterministic where clauses and reissue the dml.

The following question was asked, concerning a user's SQL, and his confrontation with ORA-30926.

I have 2 DB both are Database A connect to Database B via db link But I execute following SQL on Database A, ora-30926 display:

> 1 UPDATE dm_cus_customer cus
> 2 SET cus.returnmail = 'Y'
> 3 WHERE cus.cust_id in
> 4 ( SELECT cua.cust_id
> 5 FROM sta,
> 6 sct,
> 7 cua
> 8 WHERE sta.treatment_id = sct.treatment_id
> 9 AND sct.treatment_cd = 'RETURNMAILCUA'
> 10 AND sct.lvl_ind = 'CUA'
> 11 AND sta.lvl_ind = 'CUA'
> 12 AND sta.sts = 'A'
> 13 AND TRUNC(sta.eff_strt_date) <= TRUNC(SYSDATE)
> 14 AND NVL(sta.eff_end_date,sysdate) >= TRUNC(SYSDATE)
> 15 AND sta.cua_cus_id = cua.cust_acc_id
> 16 )
> 17* AND cus.returnmail IS NULL
> SQL> /
> AND sta.cua_cus_id = cua.cust_acc_id
> *
> ERROR at line 15:
> ORA-30926: unable to get a stable set of rows in the source tables

If I remove line 7 and 15. The SQL is no problem.
If I run the subquery (line4-16) first, put the result on line 3 as the where clause. The SQL also no problem.

An Oracle responder offered this information regarding ORA-30926:

ORA - 30926 Error occurs when a stable set rows are not found for a large dml activity or a non-deterministic Where Clause.

They also suggested that the user try to write, "a query using the where clause in 15th line, and update the Thread. It may be non-deterministic."



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.


Hit Counter