Oracle中的5个问题 - Oracle / 基础和管理
如题:
1.16进制数在转化成10进制数时出错
SQL code:
SQL> select to_char(125,'xxxx') from dual;
TO_CHAR(125,'XXXX')
--------------------------------------------------------------------------------
7d
SQL> select to_char(7d,'xxx') from dual;
TO_CHAR(7.0E+000D,'XXX')
--------------------------------------------------------------------------------
7
SQL> select to_char(to_char(125,'xxxx'),'xxx') from dual;
select to_char(to_char(125,'xxxx'),'xxx') from dual
ORA-01722: 无效数字
2.索引高度是什么一个概念: pga_aggregate_target?
3.analyze index indexname validate structure有什么用？--判断是否需要重建索引?
4.以下代码怎样才能输出“Test successed!”
SQL code:
SQL> set serveroutput on;
SQL> create or replace and compile java source named test_java as
2 public class FirstJava{
3 public static void test(){
4 System.out.println("Test successed!");
5 }
6 };
7 /
Java created
SQL>
SQL> create or replace procedure test_java is
2 language java name 'FirstJava.test()';
3 /
Procedure created
SQL> exec hello;
PL/SQL procedure successfully completed
5.外联接提高表连接的查询速度？
&nb
相关问答：
做玩data guard 后
在Primary服务器 执行
SQL>SELECT SEQUENCE#,APPLIED from V$ARCHIVED_LOG ORDER BY SEQUENCE#;
SEQUENCE# APP
---------- ---
13 NO
13 YES ......
谢谢唐人老大的指点，谢谢各位高手的指点！
安装10g Enterprise。上网下了MLDN的Oracle视频，跟着视频上的配置走，安装成功了，但是没完整地配置。
点击进入：Database Configuration Assistant
1. 创建数据库；
......
SQL code:
CREATE OR REPLACE PROCEDURE usp_refreshTopN IS
BEGIN
--文档
INSERT INTO topnresource(resourceId,title,type,cover,brief,properUser,tag,clickAmount,createDate,topNCreateDate,organizat ......
oracle函数如下：
create or replace function P_WEB_GETCITYID
(
p_mobileNumber in VARCHAR2,
p_cityid out NUMBER
) Return NUMBER
IS
p_areacode varc ......
今天遇到一个很诡异的问题。我在一张表中新增了一个字段。然后用如下脚本更新这个字段的值：
SQL code:
update ibp_fund_information_tab set yield = 7.4520 where fund_code = '040003' and info_date = ......
