> [!MultiXactGen] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_lw_multixactgen.png"></td><td><b>Wait Category</b></td><td>LWLock</td></tr><tr><td><b>Mechanism</b></td><td><code>MultiXactGenLock</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Tuple/ModifyTable">ModifyTable</a>, <a href="Operations/Table/SeqScan">SeqScan</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/RAM">Memory</a>, <a href="Resources/CPU">CPU</a></td></tr><tr><td colspan="3"><b>Serialization Bottleneck</b> in the shared locking system. MultiXacts are the architectural solution for "Lock Sharing"—for example, when multiple foreign key checks simultaneously hold a shared lock on a referenced primary key.</td></tr></table>