?
Solved

incremental update

Posted on 2001-08-08
6
Medium Priority
?
591 Views
Last Modified: 2008-03-03
How to approach incremental updates in data warehousing, where source database and the target database are Oracle 8.1.6? my OLTP System doesn?t have timestamp field
0
Comment
Question by:gopidevsurya
[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
6 Comments
 
LVL 2

Accepted Solution

by:
jbever earned 300 total points
ID: 6363680
Hi,

I'm using snapshot for this.
Just simple, not updatable.
(but our database is not too big, just to give the discoverer users their own database)

Be carefull with the update process, can take a lot of resources.

Basic snapshot: (ok there is some environment and init stuff but that well documented.)
1) create a logfile in source database
2) create db link in target
3) create snapshot ( select * from xxx@link)
(creates update process as well.)
If you use OEM 2.1 then there is a wizzard for this.
(in Oracle 8.1.7 it's part of the DBA studio)


good luck.
J.
0
 
LVL 3

Expert Comment

by:p_yaroslav
ID: 6363722
Hello!

See documentation for REPLICATION.

Yaroslav.
0
 

Expert Comment

by:sanjayraj
ID: 6364475
Running OLTP system on 7.3.4.5 and DataWarehouse on 8.1.7 had problems in replication. We wanted just to change the changes only to the Warehouse on  a weekly basis ( No Complete Refreshes). Created 2 synonyms for the table and inserted data into synonym 1 in week1 and then synonym 2 in week 2 . Ran a Delta between the two and inserted changes only. Crude but works
0
Prepare for your VMware VCP6-DCV exam.

Josh Coen and Jason Langer have prepared the latest edition of VCP study guide. Both authors have been working in the IT field for more than a decade, and both hold VMware certifications. This 163-page guide covers all 10 of the exam blueprint sections.

 
LVL 2

Expert Comment

by:jbever
ID: 6364522
Sanjayraj,

i've been doing that here (prod 7.3.4) Snapshot 8.1.7,
no problem at all (exept a lot of tables without primary key, so i have to use Rowid for the fast update)

j.

(and could you please post comments not answers, now the question gets locked)
0
 
LVL 49

Expert Comment

by:DanRollins
ID: 7063912
Hi gopidevsurya,
It appears that you have forgotten this question. I will ask Community Support to close it unless you finalize it within 7 days.  I will suggest to:

    Accept jbever's comment(s) as an answer.

gopidevsurya, if you think your question was not answered at all or if you need help, you can simply post a new comment here.  Community Support moderators will followup.

Please do not accept this comment as an answer!

EXPERTS: Your input for closing recommendations are REQUESTED.
==========
DanRollins -- EE database cleanup volunteer
0
 
LVL 6

Expert Comment

by:Mindphaser
ID: 7091313
Force accepted

** Mindphaser - Community Support Moderator **
0

Featured Post

Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

Question has a verified solution.

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

Have you ever had to make fundamental changes to a table in Oracle, but haven't been able to get any downtime?  I'm talking things like: * Dropping columns * Shrinking allocated space * Removing chained blocks and restoring the PCTFREE * Re-or…
When it comes to protecting Oracle Database servers and systems, there are a ton of myths out there. Here are the most common.
This video shows how to copy a database user from one database to another user DBMS_METADATA.  It also shows how to copy a user's permissions and discusses password hash differences between Oracle 10g and 11g.
This video shows how to configure and send email from and Oracle database using both UTL_SMTP and UTL_MAIL, as well as comparing UTL_SMTP to a manual SMTP conversation with a mail server.
Suggested Courses

762 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