<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[u012858978的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/u012858978</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; u012858978]]></copyright><item><title><![CDATA[ORACLE管理－实用sql]]></title><link>https://blog.youkuaiyun.com/u012858978/article/details/50827605</link><guid>https://blog.youkuaiyun.com/u012858978/article/details/50827605</guid><author>u012858978</author><pubDate>Tue, 08 Mar 2016 15:31:38 +0800</pubDate><description><![CDATA[1. 修改列的属性

2 set linesize 300
 
. column file_name format a40
    select * from dba_data_files;
 
.查看表空间的使用情况
SELECT SUM(bytes) / (1024 * 1024) AS free_space,  tablespace_name
FROM dba_free_s]]></description><category></category></item></channel></rss>