V$SYSTEM_FIX_CONTROL displays information about Fix Control (enabled/disabled) at the system level.

Column Datatype Description
BUGNO NUMBER Bug number (as fix control identifier)
VALUE NUMBER Current value set for the fix control
SQL_FEATURE VARCHAR2(64) Feature control ID
DESCRIPTION VARCHAR2(64) Description of the fix control
OPTIMIZER_FEATURE_ENABLE VARCHAR2(25) Version on (and after) which the fix is enabled by default
EVENT NUMBER Event formerly used to control this fix
IS_DEFAULT NUMBER Indicates whether the current value is the same as the default (1) or not (0)