Oracle 18c Database Installation issue

  • Installed 18c express on local computer
  • Run the command

    sqlplus / as sysdba

  • below is the result,

SQL*Plus: Release 18.0.0.0.0 - Production on Thu May 21 23:45:49 2020 Version 18.4.0.0.0

Copyright (c) 1982, 2018, Oracle. All rights reserved.

ERROR: ORA-12546: TNS: permission denied

Enter user-name: sys Enter password: ERROR: ORA-12546: TNS: permission denied

Enter user-name: SYSTEM Enter password: ERROR: ORA-12546: TNS: permission denied

SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus

2 answers