Oralce常用命令

oralce常用命令


新建表空间
create tablespace demo
datafile '/oracle/app/oradata/data_data001.dbf' size 100m reuse autoextend on next 1m maxsize 4000m;
alter tablespace demo default compress;

新建用户
create user [user]identified by passwd default tablespace demo;

操作员赋权
grant dba to [user];
grant all on dbms_pipe to [user];
grant select any dictionary to [user];
grant select_catalog_role to [user];

oracle 查询包含某个字段的表 查询所有表
oracle查询包含某个字段的表:
select table_name from user_tab_cols where column_name = 'xxx'
oracle查询所有用户表:
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
oralce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

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