这篇文章阐述了如何管理oracle ERP的interface表
这篇文章阐述了如何管理oracle ERP的interface表
这篇文章阐述了如何管理oracle ERP的interface表
http://blog.oraclecontractors.com/?p=212
There are a number of tables used by Oracle Applications that should have no rows in them when all is running well, and if any, only a few rows that are in error. Open Interface tables are an example of such tables; they are populated with data to be interfaced in to the system, and an interface specific concurrent program is then used to validate the data and import it in to the main system tables. Once the row has been imported it is removed from the interface table, leaving only invalid rows behind.
Assuming that the system is correctly configured and these interfaces are working correctly, the table is left empty.
Often, when these tables are accessed it is to process all the rows in the table, which involves a full table scan. However over time, depending on data volumes, these tables can have a large number of blocks allocated to them that no longer contain data.
A table segment is divided in to used blocks (i.e. blocks that at some time contained data) and free blocks (i.e. blocks that have never contained data) and the point of separation between the 2 groups is called the high water mark. Whenever Oracle performs a full table scan, it scans all the used blocks up to the high watermark.
I have found that when I am working with interface tables, they often seem to take a long time to return data; this is down to there being a huge number of used blocks that no longer contain data. Certainly if open interface tables are used during the go live for data migration, then the high watermark will be very high.
Examples of such tables are:
MTL_TRANSACTIONS_INTERFACE
OE_HEADERS_IFACE_ALL
RA_INTERFACE_LINES_ALL
SQL> set timing on
SQL> select count(*)
2 from MTL_TRANSACTIONS_INTERFACE
3 /
COUNT(*)
———
20
real: 2750
Nearly 3 seconds to count 20 rows!
As these tables are interface tables used b
相关文档：
需要大量oracle测试数据时，可以使用以下方法。
DECLARE
i INT;
BEGIN
i := 0;
WHILE(i < 100000)
LOOP
i := i + 1;
INSERT INTO TEST_TABLE(ID, XM) VALUES(i, '姓名' || i);
END LOOP;
COMMIT;
END; ......
Oracle数据导入导出imp/exp就相当于oracle数据还原与备份。exp命令可以把数据从远程数据库服务器导出到本地的dmp文件，imp命令可以把dmp文件从本地导入到远处的数据库服务器中。 利用这个功能可以构建两个相同的数据库，一个用来测试，一个用来正式使用。
执行环境：可以在SQLPLUS.EXE或者DOS（命令行）中执� ......
博彦培训部是目前国内唯一的 Oracle 官方授权 ERP 认证培训机构
目前，Oracle 应用系统在全球跨国公司得到广泛应用，诸如中国移动、深圳华为、霍尼韦尔、康明斯中国、美国铝业、DHL 和宝信软件等知名公司。为此，Oracle 咨询顾问是全球和中国市场上最紧缺的人才之一。通过Oracle 商务套件认证的咨询顾� ......
--查出所有被锁住的表
select b.owner TABLEOWNER, b.object_name TABLENAME, c.OSUSER LOCKBY, c.USERNAME LOGINID, c.sid SID, c.SERIAL# SERIAL
from v$locked_object a,dba_objects b, v$session c
where b.object_id = a.object_id AND a.SESSION_ID =c.sid;
--通过SID, SERIAL解锁
--alter system kill sessio ......
create or replace java source named FirstClass as
public class FirstClass{
public static String greeting(String name){
return "Hello " + name + "!";
}
}
/
create or replace function firstclass_greeting (name varchar2) ret ......
