Practise database Oracle 10G

Question

I would like to practise on the same environment/system as my works at home using sql developer.
My works database has around 10GB of data and i believe there are over a couple of hundred tables.
What i would like to do is copy the structure of the tables so that i can import them into my test oracle database at home. If possible i would like to copy not only the database tables but also the first record in every table in order that i can see what data the table holds without having to do a DESC. Therefore i could look at the data in sql developer.
Can anyone instruct me on the best way to achieve my goal.
Any assistance greatly appreciated.

Answer 1

I would like to practise on the same
environment/system as my works at home using sql
developer.
My works database has around 10GB of data and i
believe there are over a couple of hundred tables.
What i would like to do is copy the structure of the
tables so that i can import them into my test oracle
database at home. If you are using SQLDeveloper, then you can use the "Database Export" menu item (Tools -> Database Export) to create a SQL script with the DDL statements of all table structures in it.
Alternatively, you could use the "exp" command with "rows=n" option to create a dump file that contains just the table structures.
...If possible i would like to copy
not only the database tables but also the first
record in every table ...I don't think this will work, it could error out due to foreign key violations.
... in order that i can see what
data the table holds without having to do a DESC.But DESC was never meant to show you the data the table holds anyway.
DESC is meant to show you the table structure, and not the data in it.
Not sure how loading 1 record in each table would help you avoid using DESC.
Therefore i could look at the data in sql developer.
Can anyone instruct me on the best way to achieve my
goal.
If you are trying to get a minimal set of data to work on, then tough luck. You will have to know your data very well to figure out how to extract it that way.
You cannot apply a blanket rule of "where rownum = 1" (which you can actually specify in SQL Developer) and expect all that data to be loaded without foreign key violations.
HTH
isotope