Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>To prevent the system from entering idle mode you may try to use the <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/aa373208%28v=vs.85%29.aspx" rel="nofollow noreferrer"><code>SetThreadExecutionState</code></a> function. This function informs the system that the application is in use and allows you to specify the thread's execution requirements. The usage can be like this, but I'm not sure if this affects also the disk power down timer:</p> <pre><code>type EXECUTION_STATE = DWORD; const ES_SYSTEM_REQUIRED = $00000001; ES_DISPLAY_REQUIRED = $00000002; ES_USER_PRESENT = $00000004; ES_AWAYMODE_REQUIRED = $00000040; ES_CONTINUOUS = $80000000; function SetThreadExecutionState(esFlags: EXECUTION_STATE): EXECUTION_STATE; stdcall; external 'kernel32.dll' name 'SetThreadExecutionState'; procedure TForm1.Button1Click(Sender: TObject); begin if SetThreadExecutionState(ES_CONTINUOUS or ES_SYSTEM_REQUIRED or ES_AWAYMODE_REQUIRED) &lt;&gt; 0 then try // execute your long running task here finally SetThreadExecutionState(ES_CONTINUOUS); end; end; </code></pre> <p>Or there is also available the new set of functions <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/dd405533%28v=vs.85%29.aspx" rel="nofollow noreferrer"><code>PowerCreateRequest</code></a>, <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/dd405534%28v=vs.85%29.aspx" rel="nofollow noreferrer"><code>PowerSetRequest</code></a> and <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/dd405532%28v=vs.85%29.aspx" rel="nofollow noreferrer"><code>PowerClearRequest</code></a> designed for Windows 7, but the documentation is confusing and I haven't found any example of their usage at this time.</p> <p>Or you can modify the power settings by <a href="http://msdn.microsoft.com/en-us/library/aa372765%28v=VS.85%29.aspx" rel="nofollow noreferrer"><code>PowerWriteACValueIndex</code></a> or <a href="http://msdn.microsoft.com/en-us/library/aa372769%28v=VS.85%29.aspx" rel="nofollow noreferrer"><code>PowerWriteDCValueIndex</code></a> functions with the <code>GUID_DISK_SUBGROUP</code> subgroup of power settings.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow to programatically prevent Windows from hard disk drive spin down?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USTLama
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POHow to programatically prevent Windows from hard disk drive spin down?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUndeletion
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COThanks. That's it !
      singulars
      1. PO
      1. USuser382591
    2. COYou're welcome. Anyway what have you used, the code example from the post ? Does it mean that `SetThreadExecutionState` affects also resetting the disk power down timer ? The MSDN documentation is quite weak (and I would like to delete the note about _untested_), that's why I'm asking :) Thanks
      singulars
      1. PO
      1. USTLama
    3. COI tested it. That works like a charm... SetThreadExecutionState affects also resetting of the disk power down timer.
      singulars
      1. PO
      1. USuser382591
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload