New answers tagged performance-testing
Your best shot without any fancy licenses or third-party tools would be STATSPACK/PERFSTAT. It comes with you Oracle Installation, the documentation can be found in $ORACLE_HOME/rdbms/admin/spdoc.txt (Checked with 18.104.22.168 and 22.214.171.124). It does not generate fancy graphics it's text only. You might want to try oraSASH with simulates ASH (hence the name) ...
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