--1、查询用户下表空间位置 select * from v$datafile --2、删除表空间 drop user user2 cascade; drop tablespace user_DS_02 including contents and datafiles cascade constraints; --3、添加表空间 select *From dba_data_files --4、创建表空间，并默认添加数据文件，大小为2GB，不自动增长 CREATE SMALLFILE TABLESPACE "user_DS_02" DATAFILE 'E:\temp\ORADB\ORADATA\user_ds_02.DBF' SIZE 1G LOGGING EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT AUTO; -- 5、创建数据用户，用户名和密码默认都为“user” CREATE USER user2 PROFILE "DEFAULT" IDENTIFIED BY user2 DEFAULT TABLESPACE user_DS_02 TEMPORARY TABLESPACE TEMP ACCOUNT UNLOCK; -- 6、为user2用户分配权限 GRANT CONNECT TO user2; GRANT RESOURCE TO user2; grant dba to user2; grant select any table to user2; grant create any view to user2; grant debug any procedure to user2; grant debug connect session to user2; grant unlimited tablespace to user2; --7、只有读取其他用户表 create user JSETI_WZQ identified by abcdef; -- 假设abcdef是密码 grant connect,resource to JSETI_WZQ; grant select on LYSDC.ly_xxbz_gxjg_grtxfszl to JSETI_WZQ; grant select on LYSDC.ly_xxbz_gxjg_jzgjcsjzl to JSETI_WZQ;