SQL Developer

I am using SQL Developer EA4 for thsi conversion, best attempt yet.
I had numerous problems with this conversion.
1. The wizard asked me to specify the new Oracle database; instead it just ignored this information and created an Oracle database similarly named as the SQL Server database. I also noticed a file name "Migration.out" was produced; it contained errors such as:
Error starting at line 3 in command:
CREATE USER Emulation IDENTIFIED BY Emulation DEFAULT TABLESPACE USERS TEMPORARY TABLESPACE TEMP
Error at Command Line:3 Column:36
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges" and
Error starting at line 4 in command:
GRANT CREATE SESSION, RESOURCE, CREATE VIEW, CREATE MATERIALIZED VIEW, CREATE SYNONYM,CREATE PUBLIC SYNONYM TO Emulation
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges" and
Error starting at line 7 in command:
CREATE USER dbo_COREv13 IDENTIFIED BY dbo_COREv13 DEFAULT TABLESPACE USERS TEMPORARY TABLESPACE TEMP
Error at Command Line:7 Column:38
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges" and
Error starting at line 8 in command:
GRANT CREATE SESSION, RESOURCE, CREATE VIEW, CREATE MATERIALIZED VIEW, CREATE SYNONYM TO dbo_COREv13
Error report:
SQL Error: ORA-01031: insufficient privileges
01031. 00000 - "insufficient privileges".
I followed all of the steps listed in the "Help" section re: Migrations but still ended up with these errors.
2. My schema consists of 1000+ tables; approximately 10 tables were NOT created. When I copied the SQL from Migration.sql making NO changes and pasted it into the new Oracle database it created without issues.
3. While the conversion is taking place, different objects (constraints, indexes, foreign keys, etc) are shown to be copied; their appears to be ordering of these items. Shouln't a dependancy tree be established, and object converted based on this?
4. Several tables, in my case about 250 tables did NOT get any data copied across. No reasons given.
5. A log of all activities should be produced for review and completeness.
6. I tried to use the "Migrate select tables" option but met with no success. Apparently, it makes an assumption that both the "source" and "target" databases wil be of the same type (ie both SQL Server or both Oracle); this does not make any sense to me since the point of the exercise is to migrate data from one database vendor to another. Obviously, different database vendors use differing datatypes for similar data (ie dates).
7. I noticed in the "Migration" sql that the "Connect" statements are not correct; they were missing the "instance name" portion.
8. Also, when I looked in the "MIGRATION" sql, I could not find any entries for the last step of the conversion - the movement of data from SQL Server to Oracle. Is this intentional or an oversight.

I dont want to appear negative on this Migration; I have used SQL Developer since it inception; in my opinion this is the best attempt to date.

Murray Sobol