# Berkeley DB: DbTxn::id
Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++

# DbTxn::id

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    #include <db_cxx.h>

    u_int32_t
    DbTxn::id();

# Description

The DbTxn::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 DbTxn::id as the locker parameter to the DbEnv::lock_get or DbEnv::lock_vec calls.

# Class

DbEnv, DbTxn

# See Also

DbEnv::set_tx_max, DbEnv::set_tx_recover, DbEnv::set_tx_timestamp, DbTxn::abort, DbEnv::txn_begin, DbEnv::txn_checkpoint, DbTxn::commit, DbTxn::discard, DbTxn::id, DbTxn::prepare, DbEnv::txn_recover, DbTxn::set_timeout and DbEnv::txn_stat.`

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