Queries to check the database size and polled data table size:
Please connect the database and execute the below queries to get the results.
SELECT pg_size_pretty(pg_database_size('
SELECT pg_size_pretty(pg_total_relation_size('polleddata'));
SELECT pg_size_pretty(pg_relation_size('polleddata'));
Please copy the database name from /OpManager/conf/database_params.conf file and paste it in the query and execute it.
For MSSQL you can use SQL Server Management Studio(SSMS) - DB Properties/Object Explorer Details for DB Size/Table size & Reports -> Standard Reports -> Disk Usage By Table.