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DB_TXN-&gt;discard
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#include &lt;db.h&gt;

int
DB_TXN-&gt;discard(DB_TXN *tid, u_int32_t flags);
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Description: DB_TXN-&gt;discard
The DB_TXN-&gt;discard method frees up all the per-process resources
associated with the specified <a href="../../db4-devel-4.7.25/api_c/txn_class.html">DB_TXN</a> handle, neither committing
nor aborting the transaction. This call may be used only after calls
to <a href="../../db4-devel-4.7.25/api_c/txn_recover.html">DB_ENV-&gt;txn_recover</a> when there are multiple global transaction
managers recovering transactions in a single Berkeley DB environment. Any
transactions returned by <a href="../../db4-devel-4.7.25/api_c/txn_recover.html">DB_ENV-&gt;txn_recover</a> that are not handled by
the current global transaction manager should be discarded using
DB_TXN-&gt;discard.
The DB_TXN-&gt;discard method
returns a non-zero error value on failure
and 0 on success.

After DB_TXN-&gt;discard has been called, regardless of its return, the
<a href="../../db4-devel-4.7.25/api_c/txn_class.html">DB_TXN</a> handle may not be accessed again.
Parameters 
 flags<ul compact><li>The flags parameter is currently unused, and must be set to 0.</ul>
 
 Errors
The DB_TXN-&gt;discard method
may fail and return one of the following non-zero errors:
 
EINVAL<ul compact><li>If the transaction handle does not refer to a transaction that was
recovered into a prepared but not yet completed state; or if an
invalid flag value or parameter was specified.</ul>
 
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 Class
<a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a>, <a href="../../db4-devel-4.7.25/api_c/txn_class.html">DB_TXN</a>
 See Also
<a href="../../db4-devel-4.7.25/api_c/txn_list.html">Transaction Subsystem and Related Methods</a>
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