--ORA-03297表空間無法回收:
select file#,name from v$datafile where name like'%system%.dbf'
select max(block_id) from dba_extents where file_id='67'
select 44297*8/1024 from dual;
select segment_name,segment_type,tablespace_name,extent_id,bytes,blocks from dba_extents where file_id=64 and block_id='44297';
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