oracle 19c创建db_link名称带.com域名问题处理

文章目录

一、修改PDB的global_name
二、重启数据库实例
三、修改domain后重试

一、修改PDB的global_name

sql 复制代码

SYS@orcl1>sho pdbs

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 PDB                            READ WRITE NO
SYS@orcl1>alter session set container=pdb;

Session altered.

SYS@orcl1>select * from global_name;

GLOBAL_NAME
---------------------------------------------------------------------------------------------------------------------------
PDB.CN.OSC.ORACLE.COM

SYS@orcl1>sho pdbs

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         3 PDB                            READ WRITE NO
SYS@orcl1>       
SYS@orcl1>sho parameter domain

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_domain                            string      cn.osc.oracle.com
SYS@orcl1>
SYS@orcl1>UPDATE GLOBAL_NAME SET GLOBAL_NAME='orcl';

1 row updated.

SYS@orcl1>commit;

Commit complete.

SYS@orcl1>select * from global_name;

GLOBAL_NAME
---------------------------------------------------------------------------------------------------------------------------
orcl

cdb信息确认：

sql 复制代码

SYS@orcl1>alter session set container=cdb$root;

Session altered.

SYS@orcl1>sho pdbs

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 PDB                            READ WRITE NO

--- there is nothing change for cdb
SYS@orcl1>select * from global_name;

GLOBAL_NAME
---------------------------------------------------------------------------------------------------------------------------
ORCL.CN.OSC.ORACLE.COM

二、重启数据库实例

sql 复制代码

#grid
srvctl stop database -o immediate -d orcl
srvctl start database -d orcl

测试：

创建dblink后，查询字典表dba_db_links来确认dblink名称是否可以创建为不带域名的。

三、修改domain后重试

如以上未成功可尝试此操作

sql 复制代码

#首先show parameter domain看参数值，需要设为null
alter system set db_domain='' scope=spfile sid='*';
#重启数据库实例