DB_MPOOLFILE->sync()
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## DB_MPOOLFILE->sync()

    #include <db.h>

    int
    DB_MPOOLFILE->sync(DB_MPOOLFILE *mpf);

The `DB_MPOOLFILE->sync()` method writes all modified pages associated with the DB_MPOOLFILE back to the source file. If any of the modified pages are pinned (that is, currently in use), `DB_MPOOLFILE->sync()` will ignore them.

The `DB_MPOOLFILE->sync()` method returns a non-zero error value on failure and 0 on success.

### Class

DB_ENV, DB_MPOOLFILE

### See Also

Memory Pools and Related Methods

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