Drop rollback tablespace after using UNDO

I have switched to using UNDO instead of using rollback segments. The UNDO works fine, and I have sucessfully dropped all rollback segments. Now I try to drop rollback tablespace. Can I simplely issue drop tablespace command to drop it? the reason I hesitate to simply drop it is that before I do drop, I placed the rollback tablespace offline. And there are errors during transaction since some tables somehow still checking on this tablespace. Can I simplely drop rollback tablespace, and Oracle would clean this internally, and everything would be finr?
thanks for your input.

Hi,
This is the steps to migration from rollback tablespace to undo tablespace (from 8i to 9i migration by manual upgrade) :
SQL>alter system set undo_management=auto scope=spfile;
SQL>create UNDO tablespace UNDOTBS datafile d:\database\mydb\system\undotbs01.dbf size 500M;
SQL>alter system set undo_tablespace= UNDOTBS scope=spfile;
SQL>shutdown immediate
SQL>startup
SQL>select SEGMENT_NAME,TABLESPACE_NAME,STATUS from dba_rollback_segs; --Verirify creation and usage UNDO tablespace
SQL>drop tablespace rbs including contents and datafiles;
SQL>create pfile=d:\database\mydb\system\pfile\init.ora from spfile;No need to drop old rollback segment.
Nicolas.

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http://www.my-whiteboard.com/oracle-dba/how-to-drop-and-recreate-oracle-undo-tablespace-and-its-data-files.html may be helpful to you.

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No I did not tried with Nologging.
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>
I'm not getting errors if I try to drop the tablespace. I execute this estatement:
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SQL Error: ORA-00604: error occurred at recursive SQL level 1
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