Internally (zip) Compress table content possible?

I have a database with approx 20 TABLEs which contain a lot of data.
This database is rarely used (once for some hours every couple of weeks).
When I generate SQL scripts (with INSERTs) to re-create the data the file size will be huge (approx 30 GB !!)
When I zip compress these SQL scripts they will shrink to approx 20 MB !!!
So the relationship between data size uncompress and compressed is remarkable 1:1500
In order to avoid a waste of disc space I am thinking to let Oracle compress the data internally as well.
The final solution should work something like:
1.) Start Oracle services
2.) Connect to databse
3.) Tell Oracle (through SQLplus command): "Hey Oracle, uncompress internally all tables
tab1, tab2, tab3,..., t20
4.) Perform some SQL operations SELECT, UPDATE,...
5.) Tell Oracle (through SQLplus command): "Hey Oracle, now re-compress internally all tables
tab1, tab2, tab3,..., t20 again
6.) Disconnect from database
7.) Shutdown Oracle services
Ok, I know compressing and uncompressing will take some minutes but this is acceptable for me.
Is this somehow possible?
Peter

Great! Thank you.
How do I enable TABLESPACE compression as it is mentioned on this page
http://download.oracle.com/docs/cd/E11882_01/server.112/e17120/tables002.htm#ADMIN11630
But when I go to the following page then there is no clause described for compression for TABLESPACEs
http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_3002.htm
Is this a feature which needs to be explicitely enabled or is it build-in out-of-the-box in all version (Express, Standard, Enterprise) of Oracle?
Peter

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>
shabeer ahmed wrote:
> HI,
> Experts,
>
> I need a function module which can download ddic table content into internal table.
>
> Thank u ,
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Internally (zip) Compress table content possible?

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