oracle监听提示The listener supports no services

上回把公司的BI库从11.2.0.1升级到11.2.0.4，最后监听出现了问题，挂在了1522端口上。

这两天一顿操作，把监听又换回到1521上，但是监听却出了问题，连不上数据库。登上去看了一下，lsnrctl status提示The listener supports no services，也就是说监听没有识别库，先后采用了两种方法，如下：

一、

SQL> show parameter service_names –查看服务名称

NAME TYPE VALUE

---

service_names string orcl

SQL>alter system register

system altered

SQL>exit

强制注册一遍，然后重新启动监听，发现还是不行。

二、在listener.ora中添加如下代码：

SID_LIST_LISTENER =  
(SID_LIST =  
  (SID_DESC =  
  (GLOBAL_DBNAME = orcl)
  (SID_NAME = orcl)
  )
)

使之成为这样：

[oracle@oracle11g admin]$ cat listener.ora 
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = oracle11g)(PORT = 1521))
    )
  )
SID_LIST_LISTENER =  
(SID_LIST =  
  (SID_DESC =  
  (GLOBAL_DBNAME = orcl)
  (SID_NAME = orcl)
  )
)
ADR_BASE_LISTENER = /u01/app/oracle

再重新启动监听，

lsnrctl stop

lsnrctl start

这下监听就正常了，也可以连上了。