创建dblink名称很长，TS.REGRESS.RDBMS.DEV.US.ORACLE.COM

在做dblink的时候遇到一个问题，不管创建私有link ，还是共有link都会在link名后加很长的一串，非常的烦人。

如下：

create public database link test connect to scott identified by tiger using '(DESCRIPTION =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.8.54)(PORT = 1521))

)

(CONNECT_DATA =

(SERVICE_NAME = ora11g)

)

)';

CREATE DATABASE LINK ts CONNECT TO scott IDENTIFIED BY tiger USING 'ora11g'

SQL> select * From dba_db_links;

OWNER DB_LINK USERNAME HOST CREATED

---------- ---------------------------------------- ------------------------------ -------------------------------------------------- ---------

SYS TS.REGRESS.RDBMS.DEV.US.ORACLE.COM SCOTT ora11g 29-MAY-13

PUBLIC DB_LINK.REGRESS.RDBMS.DEV.US.ORACLE.COM SCOTT ora11g 28-APR-12

PUBLIC TEST.REGRESS.RDBMS.DEV.US.ORACLE.COM SCOTT (DESCRIPTION = 29-MAY-13

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.8.5

4)(PORT = 1521))

)

(CONNECT_DATA =

(SERVICE_NAME = ora11g)

)

)

SQL> select * From t1@TS.REGRESS.RDBMS.DEV.US.ORACLE.COM;

select * From t1@TS.REGRESS.RDBMS.DEV.US.ORACLE.COM

*

ERROR at line 1:

ORA-01017: invalid username/password; logon denied

ORA-02063: preceding line from TS

修改全局数据库名称：

SQL> alter database rename global_name to test;

SQL> create database link ts connect to scott identified by tiger using 'ora11g';

Database link created.

SQL> select * from dba_db_links;

OWNER DB_LINK USERNAME HOST CREATED

------------------------------ ---------- ------------------------------ -------------------- ---------

SYS TS SCOTT ora11g 29-MAY-13

SQL> show parameter name

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

db_file_name_convert string

db_name string ora11g

db_unique_name string ora11g

global_names boolean FALSE

instance_name string ora11g

lock_name_space string

log_file_name_convert string

service_names string ora11g

SQL> select * from global_name

GLOBAL_NAME

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

TEST