Session Browser Trace Error "'SYS.DBMS_SUPPORT' must be declared" (4310696)

In Session Browser I clicked on green button to start a trace session.

Selected the Support tab and clicked OK, resulting in the following error:

"PLS-00201: identifier 'SYS.DBMS_SUPPORT' must be declared"

1. SYS.DBMS_SUPPORT package is not installed or is invalid, or

2. User does not have execute privileges on the package

SOLUTION 1:
Install the package (script located in ORACLE_HOME/rdbms/admin/dbmssupp.sql) or recompile the package if invalid

SOLUTION 2:

Have DBA grant execute permission i.e.
GRANT EXECUTE on SYS.DBMS_SUPPORT to username;