The video is indeed quite awful. There must be some very specific circumstances that lead to this situation. Opening 5 tables takes less than 2 seconds on my PC, without any significant flickering. Can you do the following?

1. Update your video card driver to the latest version and check if this helps.
   .
2. Modify the shortcut and add the DebugSQL parameter. For example:
   
   "C:\Program Files\PLSQL Developer\plsqldev.exe" DebugSQL
   
   Reproduce the problem and send me the debug.txt file that is generated in the PL/SQL Developer directory or in the %APPDATA%\PLSQL Developer directory (e.g. C:\Users\<User>\AppData\Roaming\PLSQL Developer).

I have exactly the same problem.

- There is serious delay, menu trembling when I switch windows with CTRL Tab

- When I switch windows from the window list there is no problem

Any solution/suggestion?

Andreas

it seems many people have the same problem. plus the people in this thread, 9.x login, switch between open windows and general behavior very slow, https://forums.allroundautomations.com/ubb/ubbthreads.php?ubb=showflat&Number=42502

[quote=Andreas Kokkinos]I have exactly the same problem.

- There is serious delay, menu trembling when I switch windows with CTRL Tab

- When I switch windows from the window list there is no problem

Any solution/suggestion?

Andreas [/quote]


I updated the Video Card drivers and now it is much better. The problem did not disappear but it is not a serious problem anymore.

I think I might be the person that originally reported this problem when version 9 first came out, even in the beta version. Mine seems to only happen after I remote desktop into my pc and doesn't go away until I reboot my pc. Another weird thing is that the flicker only happens on one of my monitors, my secondary. I didn't know about the trick to minimize the application then dragging to maximum, that is nice, still annoying but at least a work around instead of rebooting. All my coworkers experience the same thing after they remote desktop into their PC's as well. So I know it is not specific to my computer.
Version 8 had no problems so something changed in Version 9.
Back in October and November Marco worked with me testing different version of the app but was unable to fix it then. But back then I was the only one experiencing this issue so it is good to see now I am not alone. I have been just trying to stay on my one monitor for my pl/sql development. Which is annyoing.

I just upgraded to 9.0.6.1661 from version 8. I'm experiencing the same issue on both Win7 and Vista machines. Mine isn't quite as bad as the video, but if I have PLSQL Developer maximized and have 2 windows open and switch between them, the title bar, menu bar, and buttons/tabs in the view table/test window all flash for 1-2 seconds. The UI is unresponsive during this time. I can reproduce it with any window type (sql, view table, etc.). The problem only happens if PLSQL Developer is maximized. If I unmaximize and resize it to fill the screen, no flashing occurs when switching windows. I can also reproduce it by changing the login (or logging off). I am on the console of both machines (not RDP'd).

Both machines are 64-bit Windows with plenty of memory free. One machine is using the 11g client, the other the 10g client (I can reproduce the issue without being connected to Oracle - just switching back and forth between two SQL windows).

After upgrading from Windows 8 Developer Preview to Windows 8 Consumer Preview I cannot reproduce the problem anymore.

Probably because it includes an updated video driver.

However, I find it very strange that such an application should be so sensitive to video drivers. After all, it is not a 3D game.

This is certainly related with the video card drivers.

But it should not happen ......

It happens again to me


Any comments from the developers?

same problem with 9.0.6.1665

I just got a brand new laptop with a docking station and two monitors and installed PL/SQL Developer and I have the flashing on my second monitor without even remote desktoping. Argh so frustrating. This is actually worse now. At least before I know I could fix it by rebooting but not anymore.