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Can i reduce the size of UNDO tablespace datafile..??
the actual size
===========
SQL> select tablespace_name,sum(bytes) from dba_data_files group by tablespace_name;
TABLESPACE_NAME GB
------------------------------ ----------
UNDO 3
space occupied
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SQL> select tablespace_name,sum(bytes) from dba_segments group by tablespace_name;
TABLESPACE_NAME MB
------------------------------ ----------
UNDO 198
now when i am resizing the datafile to 1GB i am getting this error..
SQL> ALTER DATABASE DATAFILE '/oradata/u01/undo01.dbf' RESIZE 1024M;
ALTER DATABASE DATAFILE '/oradata/u01/undo01.dbf' RESIZE 1024M
*
ERROR at line 1:
ORA-03297: file contains used data beyond requested RESIZE value
can someone help me with this.
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