Simple way to extract database statistics

Hi All,

I have around 40 different SAP systems for which I would be interested to collect the database/tablespace statistics (like Total Size/kb and Total Free/kb) to understand the database growth everyday.

It is difficult and tedious for us to collect these statistics manually to an excel. Can someone suggest us a better way to get this information in a more sophisticated way? We have solution manager which we can use if someone can suggest us how to use it to collect this info.

We are on Sun Solaris, Oracle 9i with 640 kernel.

Thanks

Vijay