Pubudu: Data and Decisions

Problem: In SQL Worksheet you cant edit or use back space. This may happen on newly installed Oracle SQL Developer. Solution: Go to    Tools | Preferences | Accelerators and press    Load Preset . Then it'll   l oad the default preset. Then try again to edit.

Error: Failed to open a session for the virtual machine VT-x features locked or unavailable in MSR. (VERR_VMX_MSR_LOCKED_OR_DISABLED) The details are: Result Code: E_FAIL (0×80004005) Component: Console Interface: IConsole {1968b7d3-e3bf-4ceb-99e0-cb7c913317bb} Solution: You have to change the processor Number to get rid of this error. So go to vitual-Box Machine–>setting–>system–>Processor–> change the CPU No. to 1. Then restart the VM and it'll work.