oracle查询用户表

 ◆Oracle查询用户表空间:select * from user_all_tables

  ◆Oracle查询所有函数和储存过程:select * from user_source

  ◆Oracle查询所有用户:select * from all_users.select * from dba_users

  ◆Oracle查看当前用户连接:select * from v$Session

  ◆Oracle查看当前用户权限:select * from session_privs

  ◆Oracle查看用户表空间使用情况:

  select a.file_id "FileNo",a.tablespace_name

  "Tablespace_name",

  a.bytes "Bytes",a.bytes-sum(nvl(b.bytes,0)) "Used",

  sum(nvl(b.bytes,0)) "Free",

  sum(nvl(b.bytes,0))/a.bytes*100 "%free"

  from dba_data_files a, dba_free_space b

  where a.file_id=b.file_id(+)

  group by a.tablespace_name ,

  a.file_id,a.bytes order by a.tablespace_name;

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