Added ALTER SYSTEM FLUSH commands to Oracle benchmark scripts

jOOQ-examples/Benchmarks/Oracle/Benchmarking Oracle (absolute).sql

@@ -15,6 +15,11 @@
 -- This version displays actual execution times.
 -- Beware that according to Oracle licensing, it is not allowed to publish benchmark results
 SET SERVEROUTPUT ON
+
+ALTER SYSTEM FLUSH SHARED_POOL;
+ALTER SYSTEM FLUSH BUFFER_CACHE;
+
+
 DECLARE
   v_ts TIMESTAMP WITH TIME ZONE;
   v_repeat CONSTANT NUMBER := 10000;

jOOQ-examples/Benchmarks/Oracle/Benchmarking Oracle (relative).sql

@@ -16,6 +16,10 @@
 -- According to our understanding of Oracle licensing, such benchmark results may be published
 -- as they cannot be compared to other databases and do not provide absolute time values
 SET SERVEROUTPUT ON
+
+ALTER SYSTEM FLUSH SHARED_POOL;
+ALTER SYSTEM FLUSH BUFFER_CACHE;
+
 CREATE TABLE results (
   run     NUMBER(2),
   stmt    NUMBER(2),