Solved

incremental update

Posted on 2001-08-08
6
584 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 75 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
Industry Leaders: 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!

 
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

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Oracle - SQL Query with Function 3 66
PL SQL Developer 7 71
pivot rows to columns 1 44
Using SQL*PLUS issue with where statement with trunc function 3 35
Truncate is a DDL Command where as Delete is a DML Command. Both will delete data from table, but what is the difference between these below statements truncate table <table_name> ?? delete from <table_name> ?? The first command cannot be …
Using SQL Scripts we can save all the SQL queries as files that we use very frequently on our database later point of time. This is one of the feature present under SQL Workshop in Oracle Application Express.
This video explains at a high level about the four available data types in Oracle and how dates can be manipulated by the user to get data into and out of the database.
This video shows how to recover a database from a user managed backup

749 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