⟩ Tell me what are the four layers that Windows NT have in order to achieve independence?
☛ Hardware abstraction layer
☛ Kernel
☛ Subsystems
☛ System Services.
☛ Hardware abstraction layer
☛ Kernel
☛ Subsystems
☛ System Services.
ORA-12516 TNSlistener could not find available handler with matching protocol stack?
ORA-12515 TNSlistener could not find a handler for this presentation?
ORA-12520 TNSlistener could not find available handler for requested type of server?
ORA-12514 TNSlistener does not currently know of service requested in connect descriptor?
ORA-12510 TNSdatabase temporarily lacks resources to handle the request?
ORA-12509 TNSlistener failed to redirect client to service handler?
ORA-12513 TNSservice handler found but it has registered for a different protocol?
ORA-12508 TNSlistener could not resolve the COMMAND given?
ORA-12505 TNSlistener does not currently know of SID given in connect descriptor?
ORA-12511 TNSservice handler found but it is not accepting connections?