New listener or new database cloned, listener not registered.
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.20.27.134)(PORT=1526)))
STATUS of the LISTENER
------------------------
Alias LISTENER11
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 02-JAN-2021 21:43:33
Uptime 0 days 0 hr. 0 min. 33 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /app/oracle/product/11.2.0.2/dbhome_1/network/admin/listener.ora
Listener Log File /app/oracle/diag/tnslsnr/prjutyu01/listener11/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.20.27.134)(PORT=1526)))
The listener supports no services
The command completed successfully
LSNRCTL>
Solution:
(To register the listener with database)
SQL> alter system set local_listener='(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.20.27.134)(PORT=1526)))' scope=both;
SQL> alter system register;