conn sys/passwd@xeThis is usally the case when you've either actually entered the wrong password, or your password contains "invalid" characters, such as the @-sign.
ORA-01017: invalid username/password; logon denied
I've tried sqlplus login with oracle, sys, system and as sysdba. I've checked my group id's and it contains: oracle, dba, oinstall, oper.It seems you have more than just an XE install in your VM, as "oinstall" and "oper" are usually not created by the XE installer.
Just found out I missed one piece here: The user "sys" can't login with a default role, but needs to login as "SYSDBA". Tryconn sys/passwd@xe
conn sys/passwd@xe as sysdba
If I can perform a, "sqlplus /nolog" okay, does that indicate that the Oracle database is up?No, it just means you start sqlplus.This alone does not connect you to any database.
I believe the listener is working okay.I think so too, as you say you are able to access APEX. This would also mean that your database is up.
... where the questions would be:sqlplus / as sysdbaMy default group id is dba. If I do a, "touch x", it is owned by oracle:dba.
ORA-01031: insufficient privileges
When I tried the browser, I was able to bring up the Oracle Application Express admin login, but I was not able to login. http://hostname:8080/apex/apex_adminProbably you either connect to a different dabase instance you actually enter a different password than the one you've entered in the installer.
I received an, "Invalid Login Credentials".
My understanding is that you have to be able to login into sqlplus to be able to turn this on or off.On Linux, this is true. On Windows, you'd also have the sqlnet.ora in your network configuration.
My understanding is that Oracle XE is NOT using OS authentication by default, so that could be the issue here.No, you should be able to use it after a fresh XE install - if everything went well.
In my case, I running a Linux vm image on Win 7.The host OS should not be relevant, unless you've installed sqlplus on your host and you are actually trying to connect to the VM that way. If I didn't get you wrong, all your attempts have been locally, i. e. inside the VM.
How can I turn on OS authentication, if I can login with sqlplus?So the login using
is working now?
sqlplus sys/password@xe as sysdba
And could you also check the install logs in /u01/app/oracle/product/11.2.0/xe/config/log ?
env | egrep 'PATH|ORA|LC|LANG|NLS'