今天测试oracle11g 使用scan ip连接数据库时出现，如下错误:[@more@]

		C:UsersFounder>sqlplus sys/oracle@racdb_scan as sysdba
	

SQL*Plus: Release 11.2.0.1.0 Production on 星期二 4月 9 14:22:36 2013

Copyright (c) 1982, 2010, Oracle. All rights reserved.

ERROR:
ORA-12545: 因目标主机或对象不存在, 连接失败

		tnsnames.ora:
	

		racdb_scan =

(DESCRIPTION =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.18.155)(PORT = 1521))

)

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = racdb)

)

)

		解决办法:
	

		C:UsersFounder>sqlplus sys/oracle@racdb1 as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on 星期二 4月 9 14:27:03 2013

Copyright (c) 1982, 2010, Oracle. All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,

		SQL> alter system set local_listener='(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.18.153)(PORT = 1521))' sid='racdb1';

System altered.

		C:UsersFounder>sqlplus sys/oracle@racdb2 as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on 星期二 4月 9 14:28:02 2013

Copyright (c) 1982, 2010, Oracle. All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,

Data Mining and Real Application Testing options

SQL> alter system set local_listener='(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.18.154)(PORT = 1521))' sid='racdb2';

System altered.

		之后便可以连接了
	

		C:UsersFounder>sqlplus sys/oracle@racdb_scan as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on 星期二 4月 9 14:28:35 2013

Copyright (c) 1982, 2010, Oracle. All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,

Data Mining and Real Application Testing options

SQL> select sysdate from dual;

SYSDATE

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

09-4月 -13

SQL> set linesize 160

SQL> show parameter instance_name

NAME TYPE VALUE

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

instance_name string racdb2

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oracle11g RAC scan ip连接时出现ORA-12545: 因目标主机或对象不存在

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