<td width="20%" align="center"><a accesskey="u" href="transactions.html" title="Chapter 74. Transaction Processing">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="two-phase.html" title="74.4. Two-Phase Transactions">Next</a></td></tr><tr><td width="40%" align="left" valign="top">74.2. Transactions and Locking </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 74.4. Two