Library Version 18.1.40

DB_ENV->set_msgpfx()
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## DB_ENV->set_msgpfx()

    #include <db.h>

    void
    DB_ENV->set_msgpfx(DB_ENV *dbenv, const char *msgpfx);

Set the prefix string that appears before informational messages issued by Berkeley DB. The length of this string can be no longer than 200.

The DB->set_msgpfx() and `DB_ENV->set_msgpfx()` methods do not copy the memory to which the msgpfx parameter refers; rather, they maintain a reference to it. Although this allows applications to modify the informational message prefix at any time (without repeatedly calling the interfaces), it means the memory must be maintained until the handle is closed.

The `DB_ENV->set_msgpfx()` method configures operations performed using the specified DB_ENV handle, not all operations performed on the underlying database environment.

The `DB_ENV->set_msgpfx()` method may be called at any time during the life of the application.

### Parameters

#### msgpfx

The msgpfx parameter is the application-specified informational prefix for additional informational messages.

### Class

DB_ENV

### See Also

Database Environments and Related Methods

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