Migrating from MS-SQL Server to Oracle

Hi,
Is there any Java Tool to migrate from MS-SQL Server to Oralce?
(My Organization's data is already stored in MS-SQL Server database, now we want to migrate to Oracle;
is there any easy way to pull data from MS-SQL Server and push into Oracle database)
thanks,

I think u should use a third party help to resolve this problem, i use dbload to solve it when i was migrated my data, it can migrate almost any data, it helps me to convert MSSQL to MYSQL, MS access to MSSQL, mysql, csv loader, foxpro and MSSQL to MS access, MYSQl, CSV, foxpro etc. i found it on google search.
Download Free : http://www.dbload.com

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