监听独立于数据库服务器的配置，解决ORA-12520及ORA-12545错误

一、环境： 

１、linux主机ocm（192.168.217.130）作为数据库
 sys@OCM> select * from v$version;
 
BANNER
 --------------------------------------------------------------------------------
 Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
 
２、linux主机ocp（192.168.217.133）作为独立远程监听
 sys@OCP> select * from v$version;
 
BANNER
 --------------------------------------------------------------------------------
 Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
 
3、windows主机（192.168.217.2）作为客户端
 　windows 7 

二、在ocm主机（192.168.217.130）上操作： 

１、配tnsnames.ora
 

LISTENER_OCP =
  (ADDRESS_LIST =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.217.133)(PORT = 1521))
  )
 

２、配参数
 sys@OCM>  alter system set remote_listener=LISTENER_OCP;
 

３、查监听
 [oracle@ocm ~]$ lsnrctl status
 

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 29-MAY-2013 21:13:28
 

Copyright (c) 1991, 2009, Oracle.  All rights reserved.
 

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
 STATUS of the LISTENER
 ------------------------
 Alias                    LISTENER
 Version                  TNSLSNR for Linux: Version 11.2.0.1.0 - Production
 Start Date                29-MAY-2013 20:34:42
 Uptime                    0 days 0 hr. 38 min. 47 sec
 Trace Level              off
 Security                  ON: Local OS Authentication
 SNMP                      OFF
 Listener Parameter File  /u01/app/oracle/product/11.2.0/network/admin/listener.ora
 Listener Log File        /u01/app/oracle/diag/tnslsnr/ocm/listener/alert/log.xml
 Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm.example.com)(PORT=1521)))
 Services Summary...
 Service "ocm" has 1 instance(s).
  Instance "ocm", status READY, has 1 handler(s) for this service...
 Service "ocmXDB" has 1 instance(s).
  Instance "ocm", status READY, has 1 handler(s) for this service...
 The command completed successfully

三、在ocp主机（192.168.217.133）上操作：
 

１、查监听
 
[oracle@ocp ~]$ lsnrctl status
 
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 29-MAY-2013 20:49:22
 
Copyright (c) 1991, 2011, Oracle.  All rights reserved.
 
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
 STATUS of the LISTENER
 ------------------------
 Alias                    LISTENER
 Version                  TNSLSNR for Linux: Version 11.2.0.3.0 - Production
 Start Date                29-MAY-2013 20:44:12
 Uptime                    0 days 0 hr. 5 min. 10 sec
 Trace Level              off
 Security                  ON: Local OS Authentication
 SNMP                      OFF
 Listener Parameter File  /u01/app/oracle/product/11.2.0/network/admin/listener.ora
 Listener Log File        /u01/app/oracle/diag/tnslsnr/ocp/listener/alert/log.xml
 Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocp)(PORT=1521)))
 Services Summary...
 Service "ocm" has 1 instance(s).
  Instance "ocm", status READY, has 1 handler(s) for this service...
 Service "ocmXDB" has 1 instance(s).
  Instance "ocm", status READY, has 1 handler(s) for this service...
 Service "ocp" has 1 instance(s).
  Instance "ocp", status READY, has 1 handler(s) for this service...
 The command completed successfully
 
２、配tnsnames.ora
 remote_130 =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.217.133)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = ocm)
      )
 )
 
３.连接测试
 [oracle@ocm admin]$ sqlplus hr/hr@remote_130
 

SQL*Plus: Release 11.2.0.3.0 Production on Wed May 29 23:07:19 2013
 

Copyright (c) 1982, 2009, Oracle.  All rights reserved.
 
ERROR:
 ORA-12520: TNS:listener could not find available handler for requested type of
 server
 
Enter user-name:
 
４、解决方法：（192.168.217.133）主机上一定要配一下
 vi /etc/hosts
 192.168.217.130 ocm
 192.168.217.133 ocp