Yea, SQL server calls their version of sequences as Identity
Seed; plus referential constraints are enforced differently by sql server than by oracle.
I will run my scripts first in sql server and use its dts(data transformation service) to move the tables over to oracle.
During transformation process, you will have the opportunity to generate an oracle version of the table scripts.
I have used both. If you still need help, please advise.
sokeh