ORA-03297: file contains used data beyond requested RESIZE value

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ORA-03297: file contains used data beyond requested RESIZE value

当我们回收数据库空间时,常用的方法是:
ALTER DATABASE
DATAFILE '/oradata/ora9i/tools03.dbf' RESIZE 900M
但一执行报以下错误
ORA-03297: file contains used data beyond requested RESIZE value
ORA-03297 file contains used data beyond requested RESIZE value

Cause: Some portion of the file in the region to be trimmed is currently in use by a database object.
Action: Drop or move segments containing extents in this region prior to resizing the file, or choose a resize value such that only free space is in the trimmed.
使用如下脚本可以获得分配到高位top_blocks 的对象信息SQL> select distinct owner,segment_name,segment_type from dba_extents where file_id = &file_id and (block_id + &top_blocks) >(select max(block_id) from dba_extents where file_id=&file_id)top_blocks 可以通过以下方法得出;
SQL>select file#,name from v$datafile;
SQL>select max(block_id) from dba_extents where file_id=12;
MAX(BLOCK_ID)
-------------
124553
SQL> show parameter db_block_size;

NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_block_size integer 8192
SQL> select 124553*8/1024 from dual;

124553*8/1024
-------------
973.0703125
该块位于973M与974M之间

通过上面sql查出来的对象信息
alter table t_obj move new_tablespace_name;
对于分区表信息:
ALTER TABLE "TEST"."TB_ACCESS"
MOVE PARTITION "TB_ACCESS_P200608"
TABLESPACE "new_tablespace_name"
再进行回收表空间
整合出来的sql语句如下:
select distinct owner, segment_name, segment_type,tablespace_name
from dba_extents
where file_id =
(select file#
from v$datafile
where name = '/oradata/ora9i/GAME_LARGE_2006_4_1.dbf')
and (block_id + (select max(block_id)*8/1024 from dba_extents where file_id=(select file#
from v$datafile
where name = '/oradata/ora9i/GAME_LARGE_2006_4_1.dbf'))) >
(select max(block_id)
from dba_extents
where file_id =
(select file#
from v$datafile
where name = '/oradata/ora9i/GAME_LARGE_2006_4_1.dbf'));

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