I have created a new core named \"testcore\" in solR ,but in solR 6.0 I am not able to find Schema.xml file in conf folder,so am I supposed to manually create it or it will conf
Starting from Solr 6, all examples and sample configurations use managed schema approach. So, there is no more schema.xml file. Instead, there is managed-schema file and it is managed by the Solr itself. So, editing the file is not recommended, though still possible.
Instead, you can edit the schema via Admin UI as well now, in the Schema Browser section.