Hi Folks,
We are trying to convert the MS SQL Server 2012 DB to Oracle 12C using Oracle SQL developer tool. We did follow migration steps as per Oracle guide below.
http://www.oracle.com/technetwork/database/migration/omwb-getstarted-093461.html
But we encountered the error in the midst of migration process. It would be great if anyone could advise for the immediate solution.

Also, Please suggest if any other recommended tools(freeware or licensed) for SQL Server to Oracle 12C migration.
Regards
Karthik