--刪除用戶 drop user sz cascade; --創建表空間 create tablespace worktablsp datafile 'C:\app\lenovo\oradata\orcl\EMPTB.dbf' SIZE 5MAUTOEXTEND ON; --修改表空間 ALTER tablespace worktablsp ADD datafile 'C:\app\lenovo\oradata\orcl\EMPTB.dbf' SIZE 5M;--擴展數據文件大小ALTER database datafile 'C:\app\lenovo\oradata\orcl\EMPTB.dbf' RESIZE 6M;--刪除DROP TABLESPACE worktablsp INCLUDING CONTENTS and datafiles --創建用戶: CREATE USER RH IDENTIFIED BY HR DEFAULT TABLESPACE tablespace ;--給用戶授權:GRANT CONNECT TO RH; --連接數據庫角色 GRANT SELECT ON SCOTT.EMP TO RH;--查看SCOTT.EMP表的權限--分區表--范圍分區create table saletb(saleid number ,productid number,saleDate date not null)partition by range(saleDate)(partition p1 values less than(to_date('2013-01-01','yyyy-mm-dd')),partition p2 values less than(to_date('2014-01-01','yyyy-mm-dd')),partition p3 values less than(to_date('2015-01-01','yyyy-mm-dd')),partition p4 values less than(maxvalue) );select * from saletb;insert into saletb values(1,1,to_date('2012-01-01','yyyy-mm-dd'));insert into saletb values(2,2,to_date('2013-06-01','yyyy-mm-dd'));insert into saletb values(3,3,to_date('2014-10-01','yyyy-mm-dd'));insert into saletb values(4,4,to_date('2016-01-01','yyyy-mm-dd'));select * from saletb partition(p3);--間隔分區 一個季度（三個月）一個分區CREATE TABLE SALES2 (SALES_ID NUMBER,PRODUCT_ID VARCHAR2(5),SALES_DATE DATE NOT NULL )PARTITION BY RANGE(SALES_DATE)INTERVAL(NUMTOYMINTERVAL(3,'MONTH'))(PARTITION P1 VALUES LESS THAN (to_date('2013-04-1','yyyy/mm/dd')));--select * from sales2; --插入數據INSERT INTO sales2 VALUES (1,'a',to_date('2013-08-1','yyyy/mm/dd'));INSERT INTO sales2 VALUES (3,'c',to_date('2013-02-1','yyyy/mm/dd'));--查看分區數據select * from sales2 partition(sys_p41);--獲得分區情況SELECT table_name,partition_name FROM user_tab_partitions WHERE table_name=UPPER('sales2');
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