數(shù)據(jù)字典dict總是屬于oracle用戶sys的。
1、用戶：
select username from dba_users;
改口令
alter user spgroup identified by spgtest;
2、表空間：
select * from dba_data_files;
select * from dba_tablespaces;//表空間
select tablespace_name,sum(bytes), sum(blocks)
from dba_free_space group by tablespace_name;//空閑表空間
select * from dba_data_files
where tablespace_name=’rbs’;//表空間對應(yīng)的數(shù)據(jù)文件
select * from dba_segments
where tablespace_name=’indexs’;
3、數(shù)據(jù)庫對象：
select * from dba_objects;
cluster、database link、function、index、library、package、package body、
procedure、sequence、synonym、table、trigger、type、undefined、view。
4、表：
select * from dba_tables;
analyze my_table compute statistics;->dba_tables后6列
select extent_id,bytes from dba_extents
where segment_name=’customers’ and segment_type=’table’
order by extent_id;//表使用的extent的信息。segment_type=’rollback’查看回滾段的空間分配信息
列信息：
select distinct table_name
from user_tab_columns
where column_name=’so_type_id’;
5、索引：
select * from dba_indexes;//索引，包括主鍵索引
select * from dba_ind_columns;//索引列
select i.index_name,i.uniqueness,c.column_name
from user_indexes i,user_ind_columns c
where i.index_name=c.index_name
and i.table_name =’acc_nbr’;//聯(lián)接使用
6、序列：
select * from dba_sequences;
7、視圖：
select * from dba_views;
select * from all_views;
text 可用于查詢視圖生成的腳本
8、聚簇：
select * from dba_clusters;
9、快照：
select * from dba_snapshots;
快照、分區(qū)應(yīng)存在相應(yīng)的表空間。
10、同義詞：
select * from dba_synonyms
where table_owner=’spgroup’;
//if owner is public,then the synonyms is a public synonym.
if owner is one of users,then the synonyms is a private synonym.
11、數(shù)據(jù)庫鏈：
select * from dba_db_links;
在spbase下建數(shù)據(jù)庫鏈
create database link dbl_spnew
connect to spnew identified by spnew using ’jhhx’;
insert into acc_nbr@dbl_spnew