Library Version 18.1.40

DB_TXN->id()
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## DB_TXN->id()

    #include <db.h>

    u_int32_t
    DB_TXN->id(DB_TXN *tid);

The `DB_TXN->id()` method returns the unique transaction id associated with the specified transaction. Locking calls made on behalf of this transaction should use the value returned from `DB_TXN->id()` as the locker parameter to the DB_ENV->lock_get() or DB_ENV->lock_vec() calls.

### Class

DB_ENV, DB_TXN

### See Also

Transaction Subsystem and Related Methods

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