在primary端连接standby时，有如下的报错：

RMAN> connect auxiliary sys/aaaaaa@STANDBY

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-04006: error from auxiliary database: ORA-12523: TNS:listener could not find instance appropriate for the client connection

后来搜了一下，

http://www.oracleblog.org/working-case/service-status-is-blocked/

记录了跟我一样的情况。

解决方法是将standby库的监听文件改为静态注册。可是我已经改为静态注册了啊，莫非写的有问题？复查了standby库上的listener.ora文件，靠，写错了。。。如下的是正确的listener.ora



[oracle@rhel43 admin]$ cat listener.ora
# LISTENER.ORA Network Configuration File: /u01/app/product/9i/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rhel43)(PORT = 1521))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
)
)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/product/9i/db_1)
(PROGRAM = extproc)

)


(SID_DESC =
(GLOBAL_DBNAME = orac)
(ORACLE_HOME = /u01/app/product/9i/db_1)
(SID_NAME = orac)
)

)

--粗体大字体是新加的。