oracle--表空间基本操作

--查表空间使用率情况（含临时表空间）
SELECT d.tablespace_name "Name", d.status "Status",
       TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)",
          TO_CHAR (NVL (a.BYTES - NVL (f.BYTES, 0), 0) / 1024 / 1024,
                   '99999999.99'
                  ) USE,
       TO_CHAR (NVL ((a.BYTES - NVL (f.BYTES, 0)) / a.BYTES * 100, 0),
                '990.00'
               ) "Used %"
  FROM SYS.dba_tablespaces d,
       (SELECT   tablespace_name, SUM (BYTES) BYTES
            FROM dba_data_files
        GROUP BY tablespace_name) a,
       (SELECT   tablespace_name, SUM (BYTES) BYTES
            FROM dba_free_space
        GROUP BY tablespace_name) f
 WHERE d.tablespace_name = a.tablespace_name(+)
   AND d.tablespace_name = f.tablespace_name(+)
   AND NOT (d.extent_management LIKE 'LOCAL' AND d.CONTENTS LIKE 'TEMPORARY')
UNION ALL
SELECT d.tablespace_name "Name", d.status "Status",
       TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)",
          TO_CHAR (NVL (t.BYTES, 0) / 1024 / 1024, '99999999.99') USE,
       TO_CHAR (NVL (t.BYTES / a.BYTES * 100, 0), '990.00') "Used %"
  FROM SYS.dba_tablespaces d,
       (SELECT   tablespace_name, SUM (BYTES) BYTES
            FROM dba_temp_files
        GROUP BY tablespace_name) a,
       (SELECT   tablespace_name, SUM (bytes_cached) BYTES
            FROM v$temp_extent_pool
        GROUP BY tablespace_name) t
 WHERE d.tablespace_name = a.tablespace_name(+)
   AND d.tablespace_name = t.tablespace_name(+)
   AND d.extent_management LIKE 'LOCAL'
   AND d.CONTENTS LIKE 'TEMPORARY';

1. 查询表空间剩余字节大小
SELECT TABLESPACE_NAME, SUM(BYTES)/1024/1024 AS "FREE SPACE(M)"
  FROM DBA_FREE_SPACE
 WHERE TABLESPACE_NAME = '&tablespace_name'
 GROUP BY TABLESPACE_NAME;
注：如果是临时表空间，请查询DBA_TEMP_FREE_SPACE
SELECT TABLESPACE_NAME, FREE_SPACE/1024/1024 AS "FREE SPACE(M)"
  FROM DBA_TEMP_FREE_SPACE
 WHERE TABLESPACE_NAME = '&tablespace_name';

2. 查询表空间所有数据文件路径
SELECT TABLESPACE_NAME, FILE_ID, FILE_NAME, BYTES/1024/1024 AS "BYTES(M)"
  FROM DBA_DATA_FILES
 WHERE TABLESPACE_NAME = '&tablespace_name';
注：如果是临时表空间，请查询DBA_TEMP_FILES
SELECT TABLESPACE_NAME, FILE_ID, FILE_NAME, BYTES/1024/1024 AS "SPACE(M)"
  FROM DBA_TEMP_FILES
 WHERE TABLESPACE_NAME = '&tablespace_name';

3. 为空间不足的表空间增加数据文件
ALTER TABLESPACE &tablespace_name ADD DATAFILE '&datafile_name' SIZE 2G;
注：如果要为临时表空间扩容，使用下面的语句
ALTER TABLESPACE &tablespace_name ADD TEMPFILE '&datafile_name' SIZE 2G;

4.查看临时表空间的大小 和 数据文件路径
SELECT TABLESPACE_NAME, FILE_ID, FILE_NAME, BYTES/1024/1024 AS "SPACE(M)"
  FROM DBA_TEMP_FILES
 WHERE TABLESPACE_NAME = 'TEMP';
或者
select name, bytes/1024/1024 as "大小(M)" from v$tempfile order by bytes;

5.重建并修改默认临时表空间办法：
--查询当前数据库默认临时表空间名
select * from database_properties where property_name='DEFAULT_TEMP_TABLESPACE';
--创建新的临时表空间
create temporary tablespace temp02   tempfile 'E:\oracle\oradata\lims\TEMP02.DBF' size 1024M autoextend on;
--修改默认表空间为刚刚建立的临时表空间
alter database default temporary tablespace temp02;
--查看用户所用临时表空间的情况
SELECT USERNAME,TEMPORARY_TABLESPACE FROM DBA_USERS;
--删除原来的临时表空间
drop tablespace temp including contents and datafiles;
--查看所有表空间名确认临时表空间是否已删除
select tablespace_name from dba_tablespaces;

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