Library Version 11.2.5.3

Dbc::set_priority()
Prev | Chapter 3. The Dbc Handle | Next

## Dbc::set_priority()

    #include <db_cxx.h>

    int
    Dbc::set_priority(DB_CACHE_PRIORITY priority);

Set the cache priority for pages referenced by the Dbc 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 `Dbc::set_priority()` method is only advisory, and does not guarantee pages will be treated in a specific way.

The `Dbc::set_priority()` method may be called at any time during the life of the application.

The `Dbc::set_priority()` method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.

### Parameters

#### priority

The priority parameter must be set to one of the following values:

- `DB_PRIORITY_VERY_LOW`

  The lowest priority: pages are the most likely to be discarded.

- `DB_PRIORITY_LOW`

  The next lowest priority.

- `DB_PRIORITY_DEFAULT`

  The default priority.

- `DB_PRIORITY_HIGH`

  The next highest priority.

- `DB_PRIORITY_VERY_HIGH`

  The highest priority: pages are the least likely to be discarded.

### Class

Dbc

### See Also

Database Cursors and Related Methods

Prev | Up | Next
Dbc::put() | Home | Chapter 4. The Dbt Handle