ORA-42920
OLS component_type is in use by existing policy policy_name labels.
- component_type: One out of level, group or compartment.
- policy_name: Name of the OLS policy.
Cause
This is an attempt to drop an Oracle Label Security (OLS) level, compartment or group that is still in use by one or more labels.
Action
Check all the labels for the level, compartment or group that you are trying to drop and verify if they are needed anymore. If none of the labels are needed, drop the labels and then drop the level, compartment or group.