oracle 系统表查询http://Tech。acnow。net 2005-4-29 网络数据字典 dict 总是属于 Oracle 用户 sys 的。 **************************************************************************************************************************1、用户: select username from dba_users; 创建用户CREATE USER jzmis PROFILE DEFAULT IDENTIFIED BY jzmis DEFAULT TABLESPACE USERS TEMPORARY TABLESPACE TEMP ACCOUNT UNLOCK;GRANT DBA TO jzmis WITH ADMIN OPTION;commit; 改口令 alter user spgroup identified by spgtest; 2、表空间: select * from dba_data_files; select * from dba_tablespaces;//表空间 select tablespace_name,sum(bytes), sum(blocks) from dba_free_space group by tablespace_name;//空闲表空间 select * from dba_data_files where tablespace_name=’RBS’;//表空间对应的数据文件 select * from dba_segments where tablespace_name=’INDEXS'; 删除表空间drop TABLESPACE XNMIS INCLUDING CONTENTS;创建表空间 CREATE TABLESPACE "XNMIS” LOGGING DATAFILE ‘E:\oracle\product\10。2.0\oradata\jzmis\xnmis。dbf’ SIZE 2048M EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO AUTOEXTEND ON NEXT 5M MAXSIZE UNLIMITED CREATE TABLESPACE ”XNMIS" LOGGING DATAFILE ’E:\oracle\product\10.2.0\oradata\jzmis\XNMIS.dbf’ SIZE 2048M REUSE AUTOEXTEND ON NEXT 5M MAXSIZE UNLIMITED ;'E:\oracle\admin\cmid\JTAIS。ora’ (path)”CTAIS” (表空间名) 3、数据库对象: 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'查看回滚段的...