Tools to compare data in tables form SQL,Oracle,SAP with Tables in SQL server

I do ETL Testing.The Application I work on loads data from Oracle,SQL,J.D.Edwards and SAP into SQl server. I wanted to test for data that is loaded into the sql server for any data mismatches. Is there any tools out there with which we can compare the data from tables in Oracle,SQL,J.D.E edwards with the Table in sql server.

I have read few posts online and in stack overflow itself but they are suggesting tools that compare the data in sql-sql.I wanted to know if there are any tools that can compare data from different types of databases.