登录RMAN 报ORA-12162：TNS:net service name is incorrectly specif

登录RMAN 报ORA-12162：TNS:net service name is incorrectly specified错误

登录RMAN 报ORA-12162：TNS:net service name is incorrectly specified错误

[Oracle@localhost admin]$ date
Tue Apr 22 18:06:16 CST 2014
[oracle@localhost admin]$ rman target /
//出现诡异的ora-12162错误，第一反应是TNS，但第二反应告诉我，这是个简单的错误，，注意环境变量

Recovery Manager: Release 11.2.0.1.0 - Production on Tue Apr 22 18:08:11 2014

Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-12162: TNS:net service name is incorrectly specified
[oracle@localhost admin]$ echo $ORACLE_HOME //查看ORACLE_HOME,设置正确
/u01/app/oracle/product/11.2.0/db_1
[oracle@localhost admin]$ echo $ORACLE_SID //查看ORACLE_SID,发现设置为空

[oracle@localhost ~]$ export ORACLE_SID=PROD //手工注入ORACLE_SID
[oracle@localhost ~]$ rman target / //启动RMAN,成功

Recovery Manager: Release 11.2.0.1.0 - Production on Tue Apr 22 18:13:40 2014

Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: PROD (DBID=239015079)

RMAN>

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