Solved

update undo$ set name=:2, ..Question

Posted on 2013-11-12
4
1,127 Views
Last Modified: 2013-11-13
I'm seeing this in an AWR.

update undo$ set name=:2, file#=:3, block#=:4, status$=:5, user#=:6, undosqn=:7, xactsqn=:8, scnbas=:9, scnwrp=:10, inst#=:11, ts#=:12, spare1=:13 where us#=:1

What kind of undo activity is that?
0
Comment
Question by:xoxomos
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 77

Expert Comment

by:slightwv (䄆 Netminder)
ID: 39643322
Anything performing DML to a base table (most end with a '$') is performed by Oracle.

Hard to tell exactly what that means.  You can open an SR with Oracle Support but I really doubt they will provide specifics about what it is actually doing.
0
 

Author Comment

by:xoxomos
ID: 39643358
Thanks.  So you are unable to tell if this is writing to or reading from UNDO?
0
 
LVL 77

Accepted Solution

by:
slightwv (䄆 Netminder) earned 250 total points
ID: 39643435
It's an update statement so it's writing somewhere.  I assume your real question is if it uses undo from the undo tablespace?

Again, it's manipulating the base table directly.  If this type of access uses 'normal' system resources like UNDO, only Oracle knows...
0
 

Author Closing Comment

by:xoxomos
ID: 39645525
Thank you.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction A previously published article on Experts Exchange ("Joins in Oracle", http://www.experts-exchange.com/Database/Oracle/A_8249-Joins-in-Oracle.html) makes a statement about "Oracle proprietary" joins and mixes the join syntax with gen…
I remember the day when someone asked me to create a user for an application developement. The user should be able to create views and materialized views and, so, I used the following syntax: (CODE) This way, I guessed, I would ensure that use…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.
Via a live example, show how to restore a database from backup after a simulated disk failure using RMAN.

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question