I'm currently using oracle xe c18. I can login using sqlplus / AS SYSDBA as oracle user. However, the command does not work for other users. It always shows an error ORA-01017: invalid username/password; logon denied. I already give SUID and GUID to all installation files. What's the problem?

  • How did you create those "other users"? With Oracle, database users are not necessarily the same as OS users.
    – mustaccio
    Nov 19, 2020 at 18:04

1 Answer 1


The syntax you gave is using 'os authentication' to connect. That is, the OS user issuing the command is a member of the os group "DBA". (Or, on Windblows, "ORA_DBA"). I hope you did not change ownership or permission of any of the files.

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