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As far as I can see, the only application using that file would be Opera itself!
Do you actually use Opera Mail?
If not, try moving the file to another location and see if the error message goes away (Opera will probably re-create it anyway).
Obviously if you use Opera mail, that's not an answer as you'll need to keep the existing file!
Do you actually use Opera Mail?
If not, try moving the file to another location and see if the error message goes away (Opera will probably re-create it anyway).
Obviously if you use Opera mail, that's not an answer as you'll need to keep the existing file!
Opera 12.16 on Windows XP Pro SP3 + Opera 12.02 on Windows 98SE with KernelEx (Dual Boot) + Opera 20 on XP for testing only! - Dual 3.2GHz Xeons - 4GB RAM - ATI Radeon X850 Graphics 1920x1080 32bit Colour with Large Fonts
I've tried moving the file, and I just tried renaming it again--the message still comes up.
I don't use Opera Mail, but I do use Opera's IRC features, which seems to be bundled with a lot of the mail settings. Since this message has been popping up I haven't been able to use any of the IRC features.
I've tried reinstalling, but to no avail.
I'm running Opera as a limited user on Windows 7 x64. Everything is up-to-date (drivers, Windows Updates, and Opera itself).
I don't use Opera Mail, but I do use Opera's IRC features, which seems to be bundled with a lot of the mail settings. Since this message has been popping up I haven't been able to use any of the IRC features.
I've tried reinstalling, but to no avail.
I'm running Opera as a limited user on Windows 7 x64. Everything is up-to-date (drivers, Windows Updates, and Opera itself).
Originally posted by aLemmer:
I've tried moving the file, and I just tried renaming it again--the message still comes up.
I don't use Opera Mail, but I do use Opera's IRC features, which seems to be bundled with a lot of the mail settings. Since this message has been popping up I haven't been able to use any of the IRC features.
I've tried reinstalling, but to no avail.
I'm running Opera as a limited user on Windows 7 x64. Everything is up-to-date (drivers, Windows Updates, and Opera itself).
I'm afraid I'm not familiar with Windows 7, or any 64 bit operating systems, so I don't know what their file locking mechanisms are.
Have you tried running as an administrator, if you can do that?
Others I hope will know more about this.
The only thing I can suggest is that you do a new single-user clean install of Opera into a different folder, and see if that has the same problem.
If it has, it must be operating system related and needs to be reported to Opera.
I would back up your existing Opera folders first just in case!
Opera 12.16 on Windows XP Pro SP3 + Opera 12.02 on Windows 98SE with KernelEx (Dual Boot) + Opera 20 on XP for testing only! - Dual 3.2GHz Xeons - 4GB RAM - ATI Radeon X850 Graphics 1920x1080 32bit Colour with Large Fonts
Well, not really, because you aren't compromising your existing Opera installation, just installing a parallel "out of the box" version.
Use the classic installer, not the msi installer, as that may do things to your existing installation if it detects it.
http://www.opera.com/browser/download/?os=windows&ver=10.53&local=y
Click the "Advanced Options" link and download the Classic Installer.
Backup your existing Opera folders first just in case!
Use the classic installer, not the msi installer, as that may do things to your existing installation if it detects it.
http://www.opera.com/browser/download/?os=windows&ver=10.53&local=y
Click the "Advanced Options" link and download the Classic Installer.
Backup your existing Opera folders first just in case!
Opera 12.16 on Windows XP Pro SP3 + Opera 12.02 on Windows 98SE with KernelEx (Dual Boot) + Opera 20 on XP for testing only! - Dual 3.2GHz Xeons - 4GB RAM - ATI Radeon X850 Graphics 1920x1080 32bit Colour with Large Fonts
It should be safer if you want to do a new parallel installation without risking the original installation.
The Windows Installer can search for other previously installed versions and sometimes remove or corrupt them even when you don't want it to.
The Classic Installer I don't think pays any attention to previously installed versions unless you specifically tell it to update an existing version.
The Windows Installer can search for other previously installed versions and sometimes remove or corrupt them even when you don't want it to.
The Classic Installer I don't think pays any attention to previously installed versions unless you specifically tell it to update an existing version.
Opera 12.16 on Windows XP Pro SP3 + Opera 12.02 on Windows 98SE with KernelEx (Dual Boot) + Opera 20 on XP for testing only! - Dual 3.2GHz Xeons - 4GB RAM - ATI Radeon X850 Graphics 1920x1080 32bit Colour with Large Fonts
I had the same problem a while ago. It turned out that the file was open by GoToMyPC, which I wouldn't have expected. (I used Opera to launch GoToMyPC.)
You can find out what's got the file open in several ways. The simplest is by using the excellent Process Explorer http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
From Process Explorer menu, do a Find and look for omailbase.dat. Procexp will show you which process is holding the file. Then you can decide how to proceed.
You can find out what's got the file open in several ways. The simplest is by using the excellent Process Explorer http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
From Process Explorer menu, do a Find and look for omailbase.dat. Procexp will show you which process is holding the file. Then you can decide how to proceed.
I just got this error message (only appear once). but when I open opera, all my email and feeds folders was empty. :-(
Good thing I make a backup 3 days ago.
Good thing I make a backup 3 days ago.
Opera 12.16 (PortableApps version)
Windows 8, x64 (Laptop)
Windows XP (SP3) (Office computer)
Windows 8, x64 (Laptop)
Windows XP (SP3) (Office computer)
When you get the error message, it means Opera can't open the file, and so can't get at your feeds and mail. However, if you immediately reboot, it is very likely that whatever was locking the file will be cleared and Opera will reopen normally with all your data safely there.
It also happens sometimes when I restart Opera immediately after closing it - it seems Opera sometimes takes a few second to close omailbase.dat. But I found that restarting - or, at worst, waiting until Opera is gone from processes in Task Manager and rebooting will cure it.
It also happens sometimes when I restart Opera immediately after closing it - it seems Opera sometimes takes a few second to close omailbase.dat. But I found that restarting - or, at worst, waiting until Opera is gone from processes in Task Manager and rebooting will cure it.
install and run
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
click find, enter omailbase.dat. Double click on search result, it will highlight the process handle in black, right click and choose close handle.
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
click find, enter omailbase.dat. Double click on search result, it will highlight the process handle in black, right click and choose close handle.