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1. 先查询表空间在物理磁盘上存放的位置,注意使用sysdba的账号登陆。
SELECT tablespace_name, file_id, file_name, round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name;
2. 需要扩容的表空间是DW_STG_TBS,目前的文件分配序号是DW_STG_TBS20.dbf，
所以在接下来的要增加的文件的名称从21开始，我们一次行增加20个文件，脚本如下。
其中设置的每个文件初始分配空间为7g, autoextend on为自动增长大小，oracle单个文件大小最大不超过32g.
--增加Stage层表空间 alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS21.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS22.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS23.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS24.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS25.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS26.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS27.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS28.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS29.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS30.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS31.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS32.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS33.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS34.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS35.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS36.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS37.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS38.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS39.dbf‘ size 7167M autoextend on ; alter tablespace DW_STG_TBS add datafile ‘/u01/app/oracle/oradata/crm001/DW_STG_TBS40.dbf‘ size 7167M autoextend on ;
3. 将以上SQL在PL/SQL中执行，完成后查询结果如下：
4. 使用本博客中另外一篇文章[ORACLE数据库存储空间使用情况查询]中的SQL语句查询表空间大小
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原文地址：http://www.cnblogs.com/30go/p/5853824.html
