配置data guard网络监听的时候，连接测试报错如下：

 

ERROR:

ORA-12514: TNS:listener does not currently know of service requested in connect

descriptor

 

出错原因是由于，在修改init$ORACLE_SID.ora文件时，在主库里面新添加了一项db_unique_name=10gpri；

备库上新添加一项db_unique_name=10gstandby.

在配置监听文件和客户端tnsnames.ora时，就要修改GLOBAL_DBNAME 成相应的10gpri或10standby.

 

[oracle@dg01 admin]$ cat listener.ora 

LISTENER =  (DESCRIPTION_LIST =  (DESCRIPTION =  (ADDRESS_LIST =  (ADDRESS = (PROTOCOL = TCP)(HOST = 172.21.1.30)(PORT = 1521))  )  )  )  SID_LIST_LISTENER =  (SID_LIST =  (SID_DESC =  (SID_NAME = PL***tProc)  (ORACLE_HOME = /u01/oracle/product/10.2.0/db_1 )  (PROGRAM = extproc)  )  (SID_DESC =  (GLOBAL_DBNAME = 10gpri)  (ORACLE_HOME = /u01/oracle/product/10.2.0/db_1)  (SID_NAME = dg01)  )  )

[oracle@dg01 admin]$ cat tnsnames.ora

10gpri=

(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.21.1.30)(PORT = 1521)) (CONNECT_DATA = (server=dedicated) (service_name = 10gpri) ) )

10gstandby=

(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.21.1.31)(PORT = 1521)) (CONNECT_DATA = (server=dedicated) (service_name = 10gstandby) ) )

 

在两个节点上测试如下：

节点dg01：

[oracle@dg01 dbs]$ sqlplus scott/tiger@10gstandby

SQL*Plus: Release 10.2.0.1.0 - Production on Wed Aug 24 03:29:28 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, OLAP and Data Mining options

SCOTT_S:138_P:28085_10gstandby> show parameter name

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------ db_file_name_convert string db_name string dg01db_unique_name string 10gstandbyglobal_names boolean FALSE instance_name string dg01 lock_name_space string log_file_name_convert stringservice_names string 10gstandby

 

节点dg02:

[oracle@dg02 dbs]$ sqlplus 

SQL*Plus: Release 10.2.0.1.0 - Production on Wed Aug 24 03:29:28 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, OLAP and Data Mining options

SCOTT_S:145_P:22710_10gpri> show parameter name

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------ db_file_name_convert string db_name string dg01db_unique_name string 10gpri global_names boolean FALSE instance_name string dg01 lock_name_space string log_file_name_convert stringservice_names string 10gpri