Environment: Windows XP professional Oracle 8.1.7.4 Using Database Configuration Assistant, following my software vendor's instructions, I entered the following values for on Rollback tab: Name: RBS Size (mb): 200 Autoextend ON Min Extent(kb): 10240 Next (kb): 10240 Storage: Initial (kb): 1024 Next (kb): 1024 Min:20 The script generated looked like: REM ********** TABLESPACE FOR ROLLBACK ********** CREATE TABLESPACE RBS DATAFILE 'd:\oracle\oradata\IPDTEST\rbs01.dbf' SIZE 200M REUSE AUTOEXTEND ON NEXT 10240K MINIMUM EXTENT 10240K DEFAULT STORAGE ( INITIAL 1024K NEXT 1024K MINEXTENTS 20 MAXEXTENTS 4096); The resulting rbs.dbf file was 5 gb. Does this make sense? Thanks, Peter Schauss -- //www.freelists.org/webpage/oracle-l