diff --git a/server/website/website/db/base/parser.py b/server/website/website/db/base/parser.py
index 853c4c0..087e283 100644
--- a/server/website/website/db/base/parser.py
+++ b/server/website/website/db/base/parser.py
@@ -219,10 +219,11 @@ class BaseParser:
                 raise ValueError(
                     'Unknown metric type for {}: {}'.format(name, metadata.metric_type))
 
-        target_objective_instance = target_objectives.get_instance(
-            self.dbms_id, target_objective)
-        metric_data[target_objective] = target_objective_instance.compute(
-            base_metric_data, observation_time)
+        target_list = target_objectives.get_all(self.dbms_id)
+        for target_name, target_instance in target_list.items():
+            metric_data[target_name] = target_instance.compute(
+                base_metric_data, observation_time)
+            LOG.info("Added target '%s=%s' to metric data", target_name, metric_data[target_name])
 
         return metric_data
 
diff --git a/server/website/website/db/base/target_objective.py b/server/website/website/db/base/target_objective.py
index 84e9030..0fee155 100644
--- a/server/website/website/db/base/target_objective.py
+++ b/server/website/website/db/base/target_objective.py
@@ -59,10 +59,18 @@ class BaseThroughput(BaseTargetObjective):
         super().__init__(name=THROUGHPUT, pprint='Throughput',
                          unit='transactions / second', short_unit='txn/sec',
                          improvement=MORE_IS_BETTER)
+        if not isinstance(transactions_counter, (str, tuple)):
+            raise TypeError(
+                "Argument 'transactions_counter' must be str or tuple type, not {}.".format(
+                    type(transactions_counter)))
         self.transactions_counter = transactions_counter
 
     def compute(self, metrics, observation_time):
-        return float(metrics[self.transactions_counter]) / observation_time
+        if isinstance(self.transactions_counter, tuple):
+            num_txns = sum(metrics[ctr] for ctr in self.transactions_counter)
+        else:
+            num_txns = metrics[self.transactions_counter]
+        return float(num_txns) / observation_time
 
 
 class TargetObjectives:
@@ -107,9 +115,13 @@ class TargetObjectives:
         if not self.registered():
             self.register()
         dbms_id = int(dbms_id)
-        metadata = list(self._metric_metadatas[dbms_id])
-        target_objective_instance = self._registry[dbms_id][target_objective]
-        metadata.insert(0, (target_objective, target_objective_instance))
+        targets_list = []
+        for target_name, target_instance in self._registry[dbms_id].items():
+            if target_name == target_objective:
+                targets_list.insert(0, (target_name, target_instance))
+            else:
+                targets_list.append((target_name, target_instance))
+        metadata = targets_list + list(self._metric_metadatas[dbms_id])
         return OrderedDict(metadata)
 
     def default(self):
diff --git a/server/website/website/db/oracle/target_objective.py b/server/website/website/db/oracle/target_objective.py
index 27a24e7..d4fcec9 100644
--- a/server/website/website/db/oracle/target_objective.py
+++ b/server/website/website/db/oracle/target_objective.py
@@ -19,6 +19,7 @@ class DBTime(BaseTargetObjective):
 
 
 target_objective_list = tuple((DBMSType.ORACLE, target_obj) for target_obj in [  # pylint: disable=invalid-name
-    BaseThroughput(transactions_counter='global.sysstat.user commits'),
+    BaseThroughput(transactions_counter=('global.sysstat.user commits',
+                                         'global.sysstat.user rollbacks')),
     DBTime(),
 ])