sorry, where i can find log error file in oracle 12c?

No, I didn't install it. I searching many times from internet but i can't find solution. For example: https://www.krenger.ch/blog/oracle-12c-ora-00942-on-create-pluggable-database/[^] :( :(

I can not create database when using Database Configuration Assistant (Oracle 12.1.0). IMAGE ERROR DESCRIPTION Help me! Please..

My app UI same as https://www.dropbox.com/s/13m2mho1u0qzmix/question.png?dl=0[^] In winforms, i have a single main form contain a tab control, when you click on items in sidebar, new page will be display in this tabpage. How can do it in c# winforms?

Hi guys!
When i create my project, i want to display a single page in a c# WinForms, same as a website, when i click on an item of navibar, other page will display. I have already tried to search but i can't find out.
Like this
Can you point me control or library extended in c# to do that, not MDI form?
Thanks!