Starting with version 18.05. Smart IT no longer uses MongoDB for storing your social data.
Before you upgrade to Smart IT version 18.05+, use the mongo migration utility to migrate your social data stored in MongoDB to the AR System database. This migration ensures that your social data is visible in the Smart IT dashboard seamlessly after you upgrade to Smart IT 18.05.
Note: We have updated the utility with Smart IT 19.02 hotfix Now, ITSM 18.08 + becomes prerequisite for the utility.
Refer to Performance improvement doc . It provides guidelines to run the utility in parallel. It also provides Mongo queries to check DB size, data clean up and creating required indexes.
Download the attached Mongo-Migration.zip file and read the steps to use it