Here is sum scripts i wrote with the xcopy command to Backup your Opera Default Local And Roaming Data..

Note - This will allows single File Names and or spaces for longer names !.. You can even use Wildcard (.)
Copy and paste it to notepad. Save as - Opera Local and Roaming Backup.bat

Seperate commands on notepads if ya only wanna backup one @ a time..

Example - For Backing up Local & Roaming Directory @ the same time..

@echo off
xcopy "%USERPROFILE%\AppData\Local\Opera Software\Opera Stable" "C:\TEMP\Opera Local Backup* /E /I /R /K /Y
xcopy "%USERPROFILE%\AppData\Roaming\Opera Software\Opera Stable" "C:\TEMP\Opera Roaming Backup" /E /I /R /K /Y

Example - For Restore

@echo off
xcopy "C:\TEMP\Opera Local Backup" "%USERPROFILE%\AppData\Local\Opera Software\Opera Stable" /E /I /R /K /Y
xcopy "C:\TEMP\Opera Roaming Backup" "%USERPROFILE%\AppData\Roaming\Opera Software\Opera Stable" /E /I /R /K /Y

And or like this
Example - For Backup

@echo off
xcopy "C:\Users\user name\AppData\Local\Opera Software\Opera Stable" "C:\TEMP\Opera_Local_Backup" /E /I /R /K /Y
xcopy "C:\Users\user name\AppData\Roamig\Opera Software\Opera Stable" "C:\TEMP\Opera Roaming Backup" /E /I /R /K /Y

Example - For Restore

@echo off
xcopy "C:\TEMP\Opera Local Backup" "C:\Users\user name\AppData\Local\Opera Software\Opera Stable" /E /I /R /K /Y
xcopy "C:\TEMP\Opera Roaming Backup" "C:\Users\user name\AppData\Roamig\Opera Software\Opera Stable" /E /I /R /K /Y

For Backing up your Opera Portable.. Lets say just your Profile Data..
Copy and paste it to notepad. Save as - Opera Portable Profle Backup.bat

Example - For Backup

@echo off
xcopy "C:\zz (x86)\Apps\Browsers\Opera\profile" "C:\TEMP\Opera Portable Profile Backup\profile" /E /I /R /K /Y

Example - For Restore
@echo off
xcopy "C:\TEMP\Opera Portable Profile Backup\profile" "C:\zz (x86)\Apps\Browsers\Opera\profile" /E /I /R /K /Y

Try This One..
Example - For Backup

@echo off
:: variables
set backupcmd=xcopy /E /I /R /K /Y
%backupcmd% "C:\Temp\Test 1" "C:\Temp\Test 2"
echo Backup Complete!
@pause

Example - For Restore

@echo off
:: variables
set backupcmd=xcopy /E /I /R /K /Y
%backupcmd% "C:\Temp\Test 2" "C:\Temp\Test 1"
echo Backup Complete!
@pause

Here is sum scripts i wrote with the Robocopy command to Backup your Opera Default Local & Roaming Data

Note - This will copy the Original Creation Dates of Files & Folders !
allows single file names and or spaces for longer names!.. And Wildcards (.) !

Copy and paste it to notepad. Save as - Opera Local & Roaming Data Backup.bat

Seperate commands on notepads if ya only wanna backup one @ a time..

Example - For Backing up Local & Roaming Directory @ the same time..

robocopy /E /copy:DAT /dcopy:DAT "%USERPROFILE%\AppData\Local\Opera Software\Opera Stable" "C:\TEMP\Operan Local Backup"
robocopy /E /copy:DAT /dcopy:DAT "%USERPROFILE%\AppData\Roaming\Opera Software\Opera Stable" "C:\TEMP\Opera Roaming Backup"

Example For Restore..

robocopy /E /copy:DAT /dcopy:DAT "C:\TEMP\Opera Local Backup" "%USERPROFILE%\AppData\Local\Opera Software\Opera Stable"
robocopy /E /copy:DAT /dcopy:DAT "C:\TEMP\Opera Roaming Backup" "%USERPROFILE%\AppData\Roaming\Opera Software\Opera Stable"

And or like this
Example - For Backup

robocopy /E /copy:DAT /dcopy:DAT "C:\Users\useer name\AppData\Local\Opera Software\Opera Stable" "C:\TEMP\Opera Local Backup"
robocopy /E /copy:DAT /dcopy:DAT "C:\Users\useer name\AppData\Roamig\Opera Software\Opera Stable" "C:\TEMP\Opera Roaming Backup"

Example - For Restore

robocopy /E /copy:DAT /dcopy:DAT "C:\TEMP\Opera Local Backup" "C:\Users\useer name\AppData\Local\Opera Software\Opera Stable"
robocopy /E /copy:DAT /dcopy:DAT "C:\TEMP\Opera Roaming Backup" "C:\Users\useer name\AppData\Roamig\Opera Software\Opera Stable"

For Backing up your Opera Portable - Lets say just your Profile Data..
Copy and paste it to notepad. Save as - Opera Portable Profile Restore.bat

Example - For Portable Profile Backup..

robocopy /E /copy:DAT /dcopy:DAT "C:\zz (x86)\Apps\Browsers\Opera\profile" "C:\TEMP\Opera Portable Profile Backup\profile"

Example - For Portable Profile Restore..

robocopy /E /copy:DAT /dcopy:DAT "C:\TEMP\Opera Portable Profile Backup\profile" "C:\zz (x86)\Apps\Browsers\Opera\profile"

Here is a couple more..

Example - For Backup..

@echo off
:: variables
set backupcmd=robocopy /E /copy:DAT /dcopy:DAT
%backupcmd% "C:\Temp\Test 1" "C:\Temp\Test 2"
echo Backup Complete!
@pause

Example For Restore..

@echo off
:: variables
set backupcmd=robocopy /E /copy:DAT /dcopy:DAT
%backupcmd% "C:\Temp\Test 2" "C:\Temp\Test 1"
echo Backup Complete!
@pause

You could copy your entire profile also, if you wish, to a usb stick. The location is listed under about opera, paths, profile. But that is a manual process only.