I have PostGIS 2.0.4 installed with PostgreSQL 9.2.4, trying to enable spatial database extension with the following command:

```
CREATE EXTENSION postgis;

```

but encountered an error - 

> 
> ERROR: must be owner of type spheroid
> 
> 
> 

What is this spheroid type? How could I enable it?

Update:
=======

Well, I still couldn't find a solution so I had to remove everything and reinstall again. Now I am getting a new error saying:

> 
> ERROR: could not load library "/usr/pgsql-9.2/lib/rtpostgis-2.0.so": libclntsh.so.11.1 cannot open shared object file: No such file or directory.
> 
> 
> 

I have no luck google out an answer to this. It seems *libclntsh.so.11.1* is a Oracle library? Why it has something to do with PostgreSQL?