DB_TXN->abort()
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## DB_TXN->abort()

    #include <db.h>

    int
    DB_TXN->abort(DB_TXN *tid);

The `DB_TXN->abort()` method causes an abnormal termination of the transaction. The log is played backward, and any necessary undo operations are done through the tx_recover function specified to DB_ENV->set_app_dispatch(). Before `DB_TXN->abort()` returns, any locks held by the transaction will have been released.

In the case of nested transactions, aborting a parent transaction causes all children (unresolved or not) of the parent transaction to be aborted.

All cursors opened within the transaction must be closed before the transaction is aborted.

After `DB_TXN->abort()` has been called, regardless of its return, the DB_TXN handle may not be accessed again.

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

### Class

DB_ENV, DB_TXN

### See Also

Transaction Subsystem and Related Methods

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