Periodic Importing of data from SQL Server into Oracle Database

I would like to know how I can use the SQL Developer tool to import data from a SQL Server database across the internet into an Oracle Database on a periodic basis? I understand there is a Migration Workbench, but it seems to be only a one off activity.
What I would really like is to be able to import data for example, very 30 minutes from multiple tables/views in a SQL Server Database into an Oracle Database (overwriting or modifying existing same data) without the need for Heterogeneous Connectivity, as my Oracle Database is not my LAN.
Thank you for your kind ideas and suggestions.

To be honest the best way to do it is DG4ODBC or DG4MSQL. All other solutions need manual interaction.
The gateways DG4ODBC and DG4MSQL are independant from the Oracle database and also from the SQL Server location. In a worst case scenario you have an Oracle database on machine A, the gateway on machine B and the SQL Server on machine C.
Gateways were built to exactly do what you want. As you have access to the Oracle database the only part you need to define within the Oracle database is a db link. If you specify the full tns connect identifier there is even no need to edit the tnsnames.ora file.
Even if you excluded the gateway in your last sentence the best solution would be the gateway.
Another option you can use is the SQL Server linked server mechanism. It allows you to link another server using OLEDB driver. In your case you can then link the Oracle db into your SQL Server and then insert/update/delete and select Oracle tables from the SQL Server. Using now a trigger will replicate the data immediately to the Oracle db.

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Loading data from SQL server to Oracle database

i want to create one table in oracle db from table in sql server. Table is huge it got 97,456,789 records.
I created db link (HS) in oracle database which is pointing to sql server. i can select that table from oracle thru db link.
select * from "dbo"."t1@dblink;
i fired below create table.
create table t2 nologging parallel (degree=3) as select * from "dbo"."t1@dblink;
and its taking long time.... but its running...
is there any alternate method to do this and and populate table in oracle db faster.
Please advise. thanks.

vhiware wrote:
create table t2 nologging parallel (degree=3) as select * from "dbo"."t1@dblink;
and its taking long time.... but its running...I doubt that parallel processing will be used as this is unique to Oracle (using rowid ranges typically) and not SQL-Server.
is there any alternate method to do this and and populate table in oracle db faster.Part of the performance overhead is pulling that data from SQL-Server to Oracle across the network link between them. This can be sped up by compressing the data first - and then transferring that across the network.
For example: using +bcp+ to export the data on the SQL-Server box to a CSV file, compress/zip the file, scp/sftp the file to Oracle, and then unzipping it there. Parallel and direct load processing can now be done using SQL*Loader to load the CSV into Oracle.
If this is a Linux/Unix base system, then the unzip/decompress process can be run in parallel with the SQL*Loader process by creating a pipe between the two - where the unzip process writes uncompressed data into the pipe and SQL*Loader reads and loads data as it becomes available via the pipe.
Alternatively, you can do you own PQ processing. Let's say the data is date ranged. You can create a procedure on Oracle that looks something like this:
{code}
create or replace procedure CopyDay( day date ) is
begin
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Dear All,
We are using Oracle Forms 10g in windows XP and having OAS 10g and Oracle database 9i.
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Thanks & Regards
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I have no idea what "Oracle Hetrogenius Services" is, so I can't help you with that, sorry.
SQL Developer might also assist you. SQL Developer can connect to SQL Server as well as Oracle and has some tools for migration. See the documentation for details:
http://download.oracle.com/docs/cd/E12151_01/doc.150/e12156/toc.htm
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Dear Expert,
I am having problem with SQL server with Oracle.
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Hi,
What about using Oracle SQL Developer for migration
http://www.oracle.com/technetwork/database/migration/sqlserver-095136.html
HTH

Show data from sql server to oracle db

Hi,
I am using oracle 10g R1 on windows 2003 platform. On one machine database 10gR1 is running and on other machine sql server is running. I want to retrieve some data from sql server to oracle database. Please tell me how I can show data from sql server to oracle db.
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To make heterogeneous connection with oracle:
1.First make an ODBC connection, make entry in System DSN(to create a data source)
2.Make an entry in tnsnames.ora
3.Make an entry in listener.ora under SID_LIST_LISTENER
4.Make an entry in file named init<HS>.ora file located "oracle_base\oracle_home\db\hs\admin"
5.Restart the listener
e.g:
1. create a odbc system dsn named like 'sqlserver'
2. sqlserver= (DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp) (HOST=xx.xx.xx.xx) (PORT=1521))
(CONNECT_DATA = (SERVICE_NAME=sqlserver))
(HS = OK)
3. (SID_DESC = (SID_NAME = sqlserver) (ORACLE_HOME = oracle_base\oracle_home\db) (PROGRAM = hsodbc) )
4.Create a file named initsqlserver.ora and make the following entry:
HS_FDS_CONNECT_INFO = sqlserver
Alternatively, you can copy the file named inithsodbc.ora and rename it to initsqlserver.ora
and edit as HS_FDS_CONNECT_INFO = sqlserver
5. lsnrctl reload listener_name
regards
adnan kaysar

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Hi,
I am having problem while update data from sql server to oracle database tables.
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Hi,
What about using Oracle SQL Developer for migration
http://www.oracle.com/technetwork/database/migration/sqlserver-095136.html
HTH

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Dear Sir/Madam,
I want to move database data from SQL Server to Oracle, but don't how to do it, will you please help me do it?

Oracle Migration Workbench is your best bet:
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HI All,
In my ODI sql server is install.My Source is in SQL server and my target is in Oracle.
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We have to migrate data from SQL Server to Oracle 10 g.
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null

Anil,
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Khurram

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I have created a dblink in oracle to access the SQL database. I am able to run queries through the dblink and it works fine. I have created a test table on Oracle Server to import the data. The field named "description" has CLOB data type. The corresponding datatype on SQL Server is varchar(7000).
When I insert the data from SQL Server, it completes successfully without any error but it truncates the data on CLOB field.
If I run the select query in SQLPlus I can see the entire description.
Select "description" from sql_view@dblink;
-- the above works fine.
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Thanks in advance,
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I hear the same from other friend that sql server truncated the leading zeros from the id column.
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Hi,
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Can sql*loader utility do it?
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Thanks
Edited by: user11313758 on Sep 30, 2009 4:30 PM

Hello:
You could consider using Oracle Heterogeneous Services to do this. If your Oracle database is on a Windows platform the link below shows you how to make a connection to SqlServer from an Oracle database.
http://www.databasejournal.com/features/oracle/article.php/3442661/Making-a-Connection-from-Oracle-to-SQL-Server.htm
Varad

Periodic Importing of data from SQL Server into Oracle Database

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