#include <db.h>

int
DB->set_priority(DB *db, DB_CACHE_PRIORITY priority);  

Set the cache priority for pages referenced by the DB handle.

The priority of a page biases the replacement algorithm to be more or less likely to discard a page when space is needed in the buffer pool. The bias is temporary, and pages will eventually be discarded if they are not referenced again. The DB->set_priority() method is only advisory, and does not guarantee pages will be treated in a specific way.

When called on a database that has been opened with sliced support, the DB->set_priority() method is automatically called on each supporting slice database.

The DB->set_priority() method may be called at any time during the life of the application.

The DB->set_priority() method returns a non-zero error value on failure and 0 on success.