Timestamping all rows of some tables on insert and update
I want to timestamp all the rows of some tables, whenever they are inserted or updated. Insertion is no problem...
Continue Reading This Article
Enjoy this article as well as all of our content, including E-Guides, news, tips and more.
- just set DEFAULT sysdate - but I'm stuck on updates. I thought I could use a trigger, but I get an error ORA-04091, that the table is mutating - basically I can't trigger an update in a row that is being updated. Fair enough, I guess, but how could I get around this?
You are getting an ORA-4091 table mutating because probably your UPDATE statement in the trigger is causing the entire table to mutate. This is a common mistake by novice programmers. Instead, the trigger approach is good; try writing:
:new.timestamp_column := SYSDATE;This should enter a SYSDATE every time you update the row.
For More Information
- Dozens more answers to tough Oracle questions from Eli Leiba are available here.
- The Best Oracle Web Links: tips, tutorials, scripts, and more.
- Have an Oracle or SQL tip to offer your fellow DBAs and developers? The best tips submitted will receive a cool prize. Submit your tip today!
- Ask your technical Oracle and SQL questions -- or help out your peers by answering them -- in our live discussion forums.
- Ask the Experts yourself: Our SQL, database design, Oracle, SQL Server, DB2, metadata, object-oriented and data warehousing gurus are waiting to answer your toughest questions.
Dig Deeper on Oracle and SQL
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.
Meet all of our Oracle Database / Applications experts
View all Oracle Database / Applications questions and answers
Start the conversation
0 comments