How can I create a table as a select from another database in Oracle?

Question

Is it possible to create a table (in my dev db) using a SELECT from a different database?

I want something like:

create tmp_table as select * from prod_db.prod_schema.table

Is there syntax to do this, or do I need to create a database link first?

Answer 1

You have to create a datalink first.

Oracle cannot query other databases unless a DB link is created. If a DB link exists, as you remarked, you have to do :

create tmp_table as select * from prod_schema.table@prod_db

Answer 2

@Steve is correct that there has to be a DB Link, but the syntax is:

create tmp_table as select * from table@dblink

Answer 3

Don't forget to create your indexes. You can get this for all the tables in your schema with a query like this:

SELECT DBMS_METADATA.GET_DDL('INDEX',u.index_name)
     FROM USER_INDEXES u;