How to clear all cached items in Oracle
caching, oracle, oracle10g, sql
Solution
Flushing the shared pool should do it, but Tom Kyte lists a couple reasons below why you may not get the result you are expecting in some cases:
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:6349391411093
Problem
I'm tuning SQL queries on an Oracle database. I want to ensure that all cached items are cleared before running each query in order to prevent misleading performance results. I clear out the shared pool (to get rid of cached SQL/explain plans) and buffer cache (to get rid of cached data) by running the following commands: ``` alter system flush buffer_cache; alter system flush shared_pool; ``` Is there more I should be doing, or is this sufficient? Thanks!