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insert data into a sql server database from an oracle linked server

Hello,

I want to insert data into a sql server database from an oracle linked server.
How can I query to retrieve only new records?

I use this query for select tables but how can I modify it for insert into SQL SERVER tables and only the new rows :
SELECT * FROM OPENQUERY(ORACLE_BKP, 'SELECT * FROM ORACLE.USR')

Thanks
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bibi92
Asked:
bibi92
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1 Solution
 
slightwv (䄆 Netminder) Commented:
What defines 'new' records?

Is there a date of some type in the Oracle table?

What happens if a record is updated or deleted in the Oracle table?

I would look at creating a table that tracks changes on the main table.  Then you know what rows have been added/changed or deleted.


Sounds like you want to replicate across the two systems.

I've never used this product but it is supposed to be able to do this:
http://www.oracle.com/technetwork/articles/datawarehouse/oracle-sqlserver-goldengate-460262.html
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bibi92Author Commented:
Hello,
Thanks, but Oracle GoldenGate need license, I can't use it.
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slightwv (䄆 Netminder) Commented:
What about my other questions?
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bibi92Author Commented:
I want to replicate across the two systems.

Thanks
0
 
johnsoneSenior Oracle DBACommented:
One other way that is a lot less efficient and will not work if the amount of records is going to grow, but it is a quick and dirty solution.

Within a transaction, delete all the records in the table and then insert all the records from Oracle.

I have done it that way in the past, but only for small tables.  If there is a large amount of data, then copying that much across the wire every time is going to be pretty slow.
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slightwv (䄆 Netminder) Commented:
>>I want to replicate across the two systems.

I meant what about the answers to my other questions:
What defines 'new' records?
Is there a date of some type in the Oracle table?
What happens if a record is updated or deleted in the Oracle table?


That post also brings up a new question:
Are you looking to replicate both ways?
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bibi92Author Commented:
I have migrated the tables with SSMA.
If a record is updated or deleted in the oracle table, it has to been updated or deleted in the sql server table.
No only from oracle to sql server.
Thanks
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slightwv (䄆 Netminder) Commented:
Without some 3rd party app I don't know of a way to replicate from Oracle to SQL Server.

If you are wanting to write your own, I would look at a trigger on the Oracle side to track what changes need to be propagated to SQL Server then set up a job to perform the changes.

You might be able to do it with queuing but I don't know if SQL Server can be set up to receive messages from an Oracle queue.
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bibi92Author Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for bibi92's comment #a39849977

for the following reason:

I have not found another solution.
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slightwv (䄆 Netminder) Commented:
I have a feeling you are trying to close this to avoid the new question lock and your new question seems to prove that.


Given your reason of "I have not found another solution."

I feel that I have to object you accepting your own post as the answer to this question.

I provided an answer that you said you could not use since you had no money.

You have not found an answer because I do not believe a 'free' solution exists.
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bibi92Author Commented:
Hello,

I have found another solution, create a Microsoft SSIS Package.

Thanks
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bibi92Author Commented:
Hello,

I have to create mssql job for refresh data and I use SSIS for transfer data between Oracle and SQL SERVER
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