1. RM#1213 - "list index out of range" message displayed if try to drop materialized view with non root user.
This issue is the result of copy paste issue in views delete method.
2. RM#1207 - Unable to comments on materialized view with PPAS server.
I found that this issues was because the sql files 'create.sql', 'view_id.sql' & 'update.sql' were outdated. It was my mistake. so updating them resolves this issue.