ALL,

C:\Users\igor>lsnrctl status

LSNRCTL for 64-bit Windows: Version 11.2.0.2.0 - Production on 28-JAN-2026 16:59:33

Copyright (c) 1991, 2014, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 64-bit Windows: Version 11.2.0.2.0 - Production
Start Date                28-JAN-2026 16:00:42
Uptime                    0 days 0 hr. 59 min. 22 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Default Service           XE
Listener Parameter File   C:\oraclexe\app\oracle\product\11.2.0\server\network\ADMIN\listener.ora
Listener Log File         C:\oraclexe\app\oracle\diag\tnslsnr\DESKTOP-B4JM300\listener\alert\log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=DESKTOP-B4JM300)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

C:\Users\igor>

But

SQL> connect system/wasqra123@127.0.0.1/XE

ERROR:

ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

What am I missing?

TIA!!