I am trying to view statistics of data store. I am using this web address: http://<host>:<server port>/admin/<datastore>?op=stats.
But this command takes me to guest page showing all the pages I have created which is default place where I go to when I login.
The http://<host>:<port>/admin/datastore?op=stats command shows the statistics of the Dgraph process for the Oracle Endeca Server. For this command, <host> refers to the hostname or IP address of the Oracle Endeca Server. <port> refers to the port on which the Oracle Endeca Server is listening. Which host and port did you specify?
The brief documentation on the stats page is here: http://docs.oracle.com/cd/E29805_01/server.230/es_admin/toc.htm#stats
The assumption for this release is that the stats page is a performance diagnostics tool customers can use when interacting with Oracle support to identify any performance problems with the Dgraph process (which itself is internal to the Endeca Server search-analytical database). If you need more help interpreting the stats page, please contact Oracle support as indicated in the documentation (preface section of the Administrator's Guide).