Hi all, I installed Oracle Database 11gR2 as well as Oracle Grid Infrastructure on a linux box, then I created the orcl database. I have always been able to connect to my database using sqlplus or oem. But lately, I'm facing an issue when typing the command lsnrctl status, and so I'm not able to connect to the database. My listener.ora file: # listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/grid/network/admin/listener.ora # Generated by Oracle configuration tools. LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = pc.company.com)(PORT = 1521)) ) ) ADR_BASE_LISTENER = /u01/app/oracle My tnsnames.ora file : # tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora # Generated by Oracle configuration tools. ORCL = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = pc.company.com)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl.example.com) ) ) When typing lsnrctl status, I get the following : LSNRCTL for Linux: Version 126.96.36.199.0 - Production on 21-JUL-2014 03:35:48 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 188.8.131.52.0 - Production Start Date 21-JUL-2014 03:25:58 Uptime 0 days 0 hr. 9 min. 50 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Log File /u01/app/oracle/diag/tnslsnr/pc151/listener/alert/log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=pc.company.com)(PORT=1521))) The listener supports no services The command completed successfully Thanks in advance.