Code: ORA-01752
Description:
 cannot delete from view without exactly one key-preserved table
Cause:
 The deleted table had - no key-preserved tables, - more than one keypreserved table, or - the key-preserved table was an unmerged view.
Action:
 The deleted table had - no key-preserved tables, - more than one keypreserved table, or - the key-preserved table was an unmerged view.