Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Oracle streams

Posted on 2014-11-04
3
Medium Priority
?
283 Views
Last Modified: 2014-11-05
Hi,

I need to replicate the data from oracle views (master_schema)to  tables in another schema(Rep_schema) (in the same database).
1) Can oracle streams be used for replicating data from oracle view to a oracle table?

Also if the data got deleted from base tables of oracle views (in master_schema) then the data should not get deleted in the tables of Rep_schema. Only update and inserts should replicate to the rep_schema.

2) Can this be achieved with  Fast refresh MV ? (I think we cannot. just I want to confirm)
3) Can this be achieved with oracle steams setup?


Thanks



.
0
Comment
Question by:GouthamAnand
3 Comments
 
LVL 35

Assisted Solution

by:johnsone
johnsone earned 400 total points
ID: 40421405
There are people here much more versed in streams than I, so I will not touch that.

As far as MVs go...

If the base of the MV is a view, then you wouldn't be able to use a fast refresh, it would have to be complete.  If you put the view query into the MV, then there is a possibility it could be done with a fast refresh, but it would probably take some changes.

A MV would also propagate the deletes.  There is no way around that in a MV.
0
 
LVL 78

Accepted Solution

by:
slightwv (䄆 Netminder) earned 1600 total points
ID: 40421521
I use Strerams Replication but you have asked the question that is new territory for me.

Never tried replication to the same database but different schema.

Never tried replicating a view.  Not sure it is possible because of how streams tracks the changes to the base tables.

I've never done one-way replication with streams and I've also never set up my own DML handlers but what you are asking should be possible.

The online docs talk about this.

Direct and Custom Apply of LCRs
http://docs.oracle.com/cd/B28359_01/server.111/b28322/gen_rep.htm#i1010425

A user procedure can be used for any customized processing of LCRs. For example, if you want to skip DELETE operations for the hr.employees table at a certain destination database, then you can specify a DML handler for DELETE operations on this table to accomplish this goal.


All that said:  Why not go with triggers on the base tables?  It would likely be much easier since everything is in the same database.
0
 

Author Closing Comment

by:GouthamAnand
ID: 40423602
Thank you.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

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…
Configuring and using Oracle Database Gateway for ODBC Introduction First, a brief summary of what a Database Gateway is.  A Gateway is a set of driver agents and configurations that allow an Oracle database to communicate with other platforms…
This video shows how to Export data from an Oracle database using the Datapump Export Utility.  The corresponding Datapump Import utility is also discussed and demonstrated.
This video explains what a user managed backup is and shows how to take one, providing a couple of simple example scripts.
Suggested Courses

564 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