Source:

Oracle RAC - Simplifying Viewing your CRS Stats - crsstat (Sudhakar Kotagiri)
https://sudhakarkotagiri.blogspot.com/2018/08/oracle-rac-simplifying-viewing-your-crs.html

Setup:

Keeping it simple below are the set of steps to get going.

1.   Copy script to a file on a local/shared directory accessible on HOST
       
        NOTE: Script is provided in “APPENDIX” at the bottom of this document.
       
        cd <script_directory>
        vi db12c_env # copy content from "APPENDIX (Environment Setup Script)" at the end of this blog
        vi crsstst # copy content from "APPENDIX (Script}" at the end of this blog.
   

2.  Update GRID_HOME in this Script under “MODIFY AS NEEDED”
        
         cd <script_directory>
         ./crsstat
        GRID_HOME=<grid_home>
   

3.  Change execution privileges as needed
         
         chmod  744 ./db_12c_env
         chmod 777 ./crsstat
   

4.  Setup and export PATH to setup ENVIRONMENT
         
        Set environment using env file "db_12c_env" or in OS profile file.
   

5.  Commands are limited to FOUR options at this time:
                    a. Display SCRIPT HELP.
                                crsstat h
                    b. List CRS resources.
                                crsstat res
                    c. Display CRS Resource.
                                crsstat <resource_name>
                    # NOTE: <resource_name> can be a FULL NAME or a SUBSTRING. i.e.                                                 “database” OR “data” OR “base” etc…
                    d. Display CRS FULL OUTPUT
                                crsstat