Oracle Benchmarking (SQL_NO_CACHE …)

Question

I want to benchmark some queries on an oracle System from a JDBC application.

However, the database seems to cache at some point in time. However, this is not intended in this case.

Is there anything like the MySQL query hint SQL_NO_CACHE.

There are Oracle query hintes /*+ FULL(test) */ and there is even the CACHE hint, but they concern whether the query results goes to the cache at all ...

What can I do on an Oracle System to get rid of any caching?

Answer 1

Using an account that has the ALTER SYSTEM privilege:

alter system flush shared_pool;

followed by:

alter system flush buffer_cache;