Import data from SQL Server to Oracle

Question

I have created a dblink in oracle to access the SQL database. I am able to run queries through the dblink and it works fine. I have created a test table on Oracle Server to import the data. The field named "description" has CLOB data type. The corresponding datatype on SQL Server is varchar(7000).
When I insert the data from SQL Server, it completes successfully without any error but it truncates the data on CLOB field.
If I run the select query in SQLPlus I can see the entire description.
Select "description" from sql_view@dblink;
-- the above works fine.
CREATE table test
(description CLOB);
INSERT INTO TEST
Select "description" from sql_view@dblink;
-- this works but it truncates the data after 256 characters
My question is, how to get the data from SQL Server without truncating characters.
Thanks in advance,
Gopal

Answer 1

I hear the same from other friend that sql server truncated the leading zeros from the id column.
I really don't have a solution for this but you can try the work around. Export the data to flat file and upload in oracle using SQL loader, as this would be much faster and efficient.