This was the solution for me
su - oracle
sqlplus "/ as sysdba"
sql> alter user system account unlock;
--> System was my locked user, in your case replace system with you locked account user name.
Hope it helped,
WARNING: The vboxdrv kernel module is not loaded. Either there is no moduleavailable for the current kernel (4.1.6-201.fc22.x86_64) or it failed toload. Please recompile the kernel module and install it bysudo /etc/init.d/vboxdrv setupYou will not be able to start VMs until this problem is fixed.
Stopping VirtualBox kernel modules [ OK ]Recompiling VirtualBox kernel modules/etc/init.d/vboxdrv: line 335: /var/log/vbox-install.log: Permission denied[FAILED](Look at /var/log/vbox-install.log to find out what went wrong)
So i did the following:Makefile:185: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again. Stop.
Stopping VirtualBox kernel modules [ OK ]Recompiling VirtualBox kernel modules [ OK ]Starting VirtualBox kernel modules [ OK ]