The following exception handling appears on the Win7_x64 oracle11g installation
Dim-00019: An error occurred while creating the service.  
O/ s-error :(OS 1726) the remote procedure call failed.

After clicking ok on the error box that pops up, continue to pop up the error:
ora-12560: TNS: protocol adapter error

The solution is as follows. First of all, if you are executing the installation program which is not installed by the administrator, you need to uninstall Oracle first. The uninstall method can be found by yourself, which is not explained here.
Oracle after unloading completely run setup as an administrator of avoid by all means. The exe, likely there will be such a problem, no relationship directly determine later, will come back to installation interface, this time don’t quit and don’t close the installation dialog box, in the wrong position, click retry the operation, the installation in the process of 360 May be prompted to system permissions dialog box (I was installed 360 security guards, all allow directly, next with respect to OK, find a good online posts, don’t find Win7_x64 installation oracle11g appear solution to this problem, Hope this way can solve and I encounter the same problem of ape friends!!!!!