What happen to my listener? RAC with grid control but listener have different response.

 Hi,

   I have one 2 nodes RAC  and I try to test lsnrctl status and got different response. Please see as follow:

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I login the first node as db_user and do the following test:

uid=502(oracle) gid=501(oinstall)

-bash-3.00$ lsnrctl status PROD

LSNRCTL for Solaris: Version 11.2.0.3.0 - Production on 29-MAY-2013 14:45:52

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ebsdb-scan)(PORT=1522))(CONNECT_DATA=(SERVICE_NAME=PROD)(INSTANCE_NAME=PROD1)))

TNS-01189: The listener could not authenticate the user

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I login the second node as db_user and do the following test:

uid=502(oracle) gid=501(oinstall)