This class represents errors related with the migration of unsupported objects and clauses. Either the target database has not provided the implementation for the given object, or the Migration Toolkit does not handle its migration.
For $DATABASE views migration is not supported. For $DATABASE roles migration is not supported. The given trigger is not migrated, the trigger has WHEN clause which is not supported by EnterpriseDB. Skipping Database Link $DATABASE_LINK. EnterpriseDB currently does not support this type of Database Link. Warning! Skipping migration of trigger $TRIGGER, currently non-table triggers are not supported in target database. Rules are not supported in $DATABASE database. $TYPE is Not Supported by COPY. Groups are not supported in $DATABASE database. Profile migration is not supported in $SRC_DB to $TARGET_DB permutation. Cannot migrate unknown Profile $PROFILE. Password Profile verify function $MY_VERIFICATION_FUNCTION must be explicitly migrated.