DBCC FREEPROCCACHE

DBCC DROPCLEANBUFFERS

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DBCC DROPCLEANBUFFERS clears clean (unmodified) pages from the buffer pool

Precede that with a CHECKPOINT to flush any dirty pages to disk first

DBCC FLUSHPROCINDB clears execution plans for that database

TRUNCATE TABLE cache;

TRUNCATE TABLE cache_block;

TRUNCATE TABLE cache_bootstrap;

TRUNCATE TABLE cache_field;

TRUNCATE TABLE cache_filter;

TRUNCATE TABLE cache_form;

TRUNCATE TABLE cache_image;

TRUNCATE TABLE cache_menu;

TRUNCATE TABLE cache_page;

TRUNCATE TABLE cache_path;

TRUNCATE TABLE cache_token;

TRUNCATE TABLE cache_update;