每日一得

$ORACLE9I_HOME\tg4msql\admin下新寫(xiě)initpubs.ora和initnorthwind.ora配置文件.
initpubs.ora內(nèi)容如下:
HS_FDS_CONNECT_INFO="SERVER=SQLSERVER_HOSTNMAE;DATABASE=pubs"
HS_DB_NAME=pubs
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
initnorthwind.ora內(nèi)容如下:
HS_FDS_CONNECT_INFO="SERVER=sqlserver_hostname;DATABASE=Northwind"
HS_DB_NAME=Northwind
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER

$ORACLE9I_HOME\network\admin 下listener.ora內(nèi)容如下:
LISTENER =
  (DESCRIPTION_LIST =
   (DESCRIPTION =
    (ADDRESS_LIST =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.2)(PORT = 1521))
  )
  )
  )

SID_LIST_LISTENER =
  (SID_LIST =
  (SID_DESC =
  (GLOBAL_DBNAME = test9)
  (ORACLE_HOME = d:\oracle\ora92)
  (SID_NAME = test9)
 )
  (SID_DESC=
  (SID_NAME=pubs)
  (ORACLE_HOME=d:\Oracle\Ora92) 
  (PROGRAM=tg4msql)
  )
  (SID_DESC=
  (SID_NAME=northwind)
  (ORACLE_HOME=d:\Oracle\Ora92) 
 (PROGRAM=tg4msql)
    )
  )

pubs =
  (DESCRIPTION =
  (ADDRESS_LIST =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.2)(PORT = 1521))
    )
    (CONNECT_DATA =
    (SID = pubs)
    )
    (HS = pubs) 
   )

northwind =
  (DESCRIPTION =
  (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.2)(PORT = 1521))
    )
    (CONNECT_DATA =
    (SID = northwind)
    )
    (HS = northwind) 
   )   
 保存tnsnames.ora后,在命令行下
 tnsping pubs
 tnsping northwind

Attempting to contact (DESCRIPTION = (ADDRESS_LIST = 
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.2)
(PORT = 1521))) (CONNECT_DATA = (SID = pubs)) (HS = pubs))
OK（20毫秒）
Attempting to contact (DESCRIPTION = (ADDRESS_LIST =
 (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.2)
(PORT = 1521))) (CONNECT_DATA = (SID = northwind)) (HS = northwind))
OK（20毫秒）

alter system set global_names=false;

create public database link pubs 
connect to testuser identified by testuser_pwd using 'pubs';
create public database link northwind 
connect to testuser identified by testuser_pwd using 'northwind';
(假設(shè)SQL Server下pubs和northwind已有足夠權(quán)限的用戶(hù)登陸testuser,
密碼為testuser_pwd)

select * from stores@pubs;
...... 	......
select * from region@northwind;
......  ......

create table stores as select * from stores@pubs;
select zip from stores；
ERROR 位于第 1 行:
ORA-00904: 無(wú)效列名
select "zip" from stores;
zip
-----
98056
92789
96745
98014
90019
89076

CREATE TABLE stores
    ("stor_id"                      CHAR(4) NOT NULL,
    "stor_name"                    VARCHAR2(40),
    "stor_address"                 VARCHAR2(40),
    "city"                         VARCHAR2(20),
    "state"                        CHAR(2),
    "zip"                          CHAR(5))
  PCTFREE     10
  PCTUSED     40
  INITRANS    1
  MAXTRANS    255
  TABLESPACE  users
  STORAGE   (
    INITIAL     131072
    NEXT        131072
    PCTINCREASE 0
    MINEXTENTS  1
    MAXEXTENTS  2147483645
  )
/

(SID_DESC=
     		(SID_NAME=sqlserver_databaseid)
      		(ORACLE_HOME=d:\Oracle\Ora92) 
      		(PROGRAM=tg4msql)
   	)
   	UNIX或WINDOWS下ORACLE8I,ORACLE9I服務(wù)器tnsnames.ora里面
	northwind =
	  (DESCRIPTION =
(ADDRESS_LIST =
	(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.2)(PORT = 1521))
	    )
	(CONNECT_DATA =
	(SID = sqlserver_databaseid)
    		)
	(HS = sqlserver_databaseid) 
   	   )