> [!BufferContent] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_lwlock_buffers_content.png"></td><td><b>Wait Category</b></td><td>LWLock</td></tr><tr><td><b>Mechanism</b></td><td><code>BufferContentLock</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Scans/SeqScan">SeqScan</a>, <a href="Operations/Joins/NestedLoop">NestedLoop</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">Contention on a <b>Shared Memory Page</b>. This lock is required to read or modify the actual data contents of an 8KB data page that is already resident in <code>shared_buffers</code>.</td></tr></table>