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Extra TEMP/UNDO/redo disk space required for DBMS_REDEFINITION?

edited Apr 29, 2010 3:39AM in Database Administration (MOSC) 3 commentsAnswered
Customer is going to use DBMS_REDEFINITION to move the LOBs for 3 tables to a new tablespace.  This is to reduce the size of the database as 90% of the LOBs in this tablesapace are going to be deleted first.  It is expected that there will be approx 1 TB (terrabyte) of LOBs remaining, and these will be moved to a new tablespace using DBMS_REEFINITION.   Customer is trying to estimate the required disk space for the operation, in addition to the new tablespace for the LOBs.  
Will the DBMS_REDEFINITION operation require additional TEMP tablespace (currently TEMP is 10 GB), UNDO tablespace (currently UNDO is 11 GB), or generate more redo?

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