Oracle needs table to check index existence

activerecord/lib/active_record/schema_migration.rb

@@ -42,10 +42,10 @@ def self.create_table
     end
 
     def self.drop_table
+      if connection.table_exists?(table_name)
         if connection.index_exists?(table_name, "version", :unique => true, :name => index_name)
           connection.remove_index(table_name, :name => index_name)
         end
-      if connection.table_exists?(table_name)
         connection.drop_table(table_name)
       end
     end