> [!CopyFileCopy] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_io_copyfile_copy.png"></td><td><b>Wait Category</b></td><td>IO</td></tr><tr><td><b>Mechanism</b></td><td><code>CopyFileCopy</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Other/FileOp">File Copy</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/Disk">Disk</a>, <a href="Resources/CPU">CPU</a></td></tr><tr><td colspan="3">Contention on <b>Bulk File Duplication</b>. This event is triggered when the engine is performing a full file copy, typically during a tablespace migration or an online backup, and is waiting for the underlying OS copy operation to complete.</td></tr></table>