File ownership after patching or relinking Oracle RDBMS software
Some time ago I received the warning message “chmod: changing permissions of ‘/u00/app/oracle/product/11.2.0.4/bin/extjobO’: Operation not permitted” when patching the Oracle RDBMS at a customer site. This was the reason for me, to check what happens to file permissions and ownership when patching or relinking Oracle RDBMS software.
Oracle 18c Express Edition: How to create a second database
Not everything that is technically possible is allowed. And so of course for the Oracle Database 18c Express Edition the restriction is clear: “One instance per environment”. “Environment” means a VM, a physical server etc.. But maybe you can run two XE databases on one server after all? Let’s give it a try.
Oracle 18c Express Edition: How to create a Non-Container-Database
Oracle 18c Express Edition (XE) comes with a container database as default database. Up to 3 pluggable databases are free so XE is a good start for getting familiar with the Multitenant architecture. However, you can still run a Non-Container-Database with Oracle 18c XE. You can simply use the Database Configuration Assistant (dbca) to create…