Sqlplus login error: Enter user-name: Enter password: ERROR: ****************************************************************************************** Lsnrctl error: o:\lsnrctl start LSNRCTL for 64-bit Windows: Version 19.0.0.0.0 - Production on 13-OCT-2022 13:06:19 Copyright (c) 1991, 2019, Oracle. All rights reserved. Starting tnslsnr: please wait... Unable to OpenSCManager: err=5 TNS-12560: TNS:protocol adapter error TNS-00530: Protocol adapter error ****************************************************************************************** # tnsnames.ora Network Configuration File: O:\db_home\network\admin\tnsnames.ora # Generated by Oracle configuration tools. #ORACLR_CONNECTION_DATA = # (DESCRIPTION = # (ADDRESS_LIST = # (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC)) # ) # (CONNECT_DATA = # (SID = CLRExtProc) # (PRESENTATION = RO) # ) # ) # O:\db_home\network\admin\tnsnames.ora #net_service_name = #EXTPROC_CONNECTION_DATA = ORCL = (DESCRIPTION = (ADDRESS_LIST = #(ADDRESS = (PROTOCOL = TCP)(HOST = MASTER-PRO-PC)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.152)(PORT = 1521)) 192.168.1.152 (CONNECT_DATA = (SERVICE_NAME = ORCL.HOME) ) )) # listener.ora Network Configuration File: O:\db_home\NETWORK\ADMIN\listener.ora # Generated by Oracle configuration tools. SID_LIST_LISTENER = (SID_LIST = (SID_DESC = # (SID_NAME = CLRExtProc) (SID_NAME=PLSEXTPROC) (ORACLE_HOME = O:\db_home) (PROGRAM = extproc) (ENVS = "EXTPROC_DLLS=ONLY:O:\db_home\bin\oraclr19.dll") ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = DESKTOP)(PORT = 1521)) ) ) ****************************************************************************************** # sqlnet.ora Network Configuration File:O:\db_home\network\admin\SQLNET.ORA # Generated by Oracle configuration tools. SQLNET.AUTHENTICATION_SERVICES= (NTS) NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)