SQL> select file_id,tablespace_name,file_name,bytes/(1024*1024) as MB from dba_data_files where tablespace_name like "TEST_T%"; FILE_ID TABLESPACE_NAME FILE_NAME MB---------- --------------- ---------------------------------------- ---------- 7 TEST_TAB /home/Oracle/oracle/oradata/mdsp/test_ta 20 b.dbf SQL> alter database datafile "/home/oracle/oracle/oradata/mdsp/test_tab.dbf" resize 21 m; Database altered. SQL> select file_id,tablespace_name,file_name,bytes/(1024*1024) as MB from dba_data_files where tablespace_name like "TEST_T%"; FILE_ID TABLESPACE_NAME FILE_NAME MB---------- --------------- ---------------------------------------- ---------- 7 TEST_TAB /home/oracle/oracle/oradata/mdsp/test_ta 21 b.dbfSQL> alter tablespace test_tab add datafile "/home/oracle/oracle/oradata/mdsp/test_tab1.dbf" size 20 m; Tablespace altered. SQL> select file_id,tablespace_name,file_name,bytes/(1024*1024) as MB from dba_data_files where tablespace_name like "TEST_T%"; FILE_ID TABLESPACE_NAME FILE_NAME MB---------- --------------- ---------------------------------------- ---------- 7 TEST_TAB /home/oracle/oracle/oradata/mdsp/test_ta 21 b.dbf 8 TEST_TAB /home/oracle/oracle/oradata/mdsp/test_ta 20Oracle移动数据文件Oracle重置表空间的大小相关资讯 Oracle教程
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