System data file is almost full around 17G

Hi,
I have put audit in my database.So, because of the more data in sys.aud$ table my system data file almost reached 17g..
can i reduce size of the system data file?
what is the solution? I am using 10g release 2.
Thanks in advance.

RMAN is a Physical Backup-Restore method. It will restore and recreate the datafiles to be the same on-disk size as they were at the time of the backup.
Export-DropDatabase-CreateEmptyDatabase-Import is used to "shrink" databases if there is a lot of wasted space.
Normally for non-SYSTEM tablespaces, it is simpler to create a new tablespace and move data into the new tablespace and then drop the older tablespace so as to not have to use Export-Drop-Create-Import.
However, you cannot use this method for SYSTEM so you'd have to Export-Drop-Create-Import as the SYSTEM tablespace is your issue.
Make sure that you have practiced this method and verifed that there are no issues with database accounts, schemas, privileges, database links, indexes, datatypes, storedprocedures etc after you import into a test database before you try this on production.
Hemant K Chitale

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