Database Transaction Monitor Overview Monitor active database transactions in real time to detect long-running queries, lock contention, uncommitted transactions, and transaction throughput anomalies across PostgreSQL, MySQL, and MongoDB. Prerequisites - Database credentials with access to system catalogs ( , , or MongoDB ) - , , or CLI installed - Permissions to view other sessions' transactions (PostgreSQL: role; MySQL: privilege) - Baseline metrics for normal transaction duration and throughput - Alerting infrastructure (email, Slack webhook, or PagerDuty) for notifications Instructions 1.…