The VMware Tools service on ESXi 5.1.x and 5.5.x does not boot after you have uninstalled the open-vm-tools and installed legacy VMware Tools in SLE12.
Status message similar to the following is displayed in VMware Tools status in VMware vSphere Client after you reboot the virtual machine:
Not running(Not installed)
# rpm -e open-vm-tools-desktop-9.4.0-9.24.x86_64
# rpm -e open-vm-tools-9.4.0-9.24.x86_64
# ./vmware-install.pl -d -f