E4071 Cmd Rej: VFLEX cannot be turned ON if STPOPTS DefCC/DefNDC is NONE
The defcc and defndc system options must be provisioned before the V-Flex feature can be turned on.
Recovery
Use the chg-stpopts command to provision the defcc and defndc system options.
Re-enter the chg-ctrl-feat command to turn on the V-Flex feature.
Refer to the command descriptions in Commands User's Guide for assistance. If this error message appears again, contact My Oracle Support for assistance. See My Oracle Support (MOS).