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Following statement will compare values in two databases and gives you records that not matched. SELECT stage,live,path,scope_id FROM ( SELECT (CASE WHEN (S.value = L.value) THEN '' ELSE 'N/M' END) as matched, S.scope_id, S.path, S.value AS 'stage', L.value AS 'live' FROM cin_stage.core_config_data S INNER JOIN cin_live.core_config_data L ON S.path = L.path ) RES WHERE matched = 'N/M' ORDER BY scope_id

I got this error suddenly while accessing the magento site. SQLSTATE[HY000] [1129] Host 'user.workgroup' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' Solution use below command in console mysqladmin flush-hosts or log in to  mysql with a different host if its implemented on network environment and use below statement; FLUSH HOSTS; Or Restart the mysql server