salut
j'ai un problém , si on connecte avec le avec Oracle sql devloper , le programme ''Oracle sql devloper'' afficher : Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection .

le resultat de lsnrctl status est :
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 29-APR-2016 14:01:13

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

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=DrBrm)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused