===== Multi Threaded Architecture =====
Only the processes that are needed will be running for a particular instance.\\
Now Oracle can run in multi-threaded mode in Linux (Similar to Windows).\\
<code> ALTER SYSTEM SET threaded_execution=true SCOPE=SPFILE;</code>
The database must be administered by an account that is authenticated through a password file.\\
OS authentication is no longer supported, must now login as SYS user using the password.\\
Different sessions will now have the same SPID but a different STID (Session Thread ID).\\

[[https://oracle-base.com/articles/12c/multithreaded-model-using-threaded_execution12cr1|Oracle Base Article]]