DBmarlin

DBmarlin suits database teams that need to investigate SQL performance and changes across a mixed technology estate. Its combination of query analysis, change detection and tuning guidance is compelling; instance-based licensing makes it important to check how each database platform is counted before scaling up.

Overview

DBmarlin brings performance analysis and change detection into the same monitoring workflow. It captures SQL statement text and wait states to show where execution time goes, while automatically detecting changes to schema objects, database parameters and explain plans. That makes it useful when a slowdown may be connected to a recent database change rather than the query alone.

An AI Co-pilot supplies database tuning insights and advice. Teams can deploy DBmarlin self-hosted or in the cloud, and its broad database support accommodates estates spanning relational systems, MongoDB and Snowflake. The trade-off is licensing complexity: depending on the technology, licensing counts active instances, databases or nodes.

Key features

SQL, waits and execution plans

Query profiling, wait and lock analysis, and execution plans give database teams several angles on performance problems. Capturing statement text and waits helps distinguish execution work from time spent waiting, which is more useful for diagnosis than a bare alert that a query is slow.

Change detection and tuning advice

Automatic detection of schema, parameter and explain-plan changes can help teams investigate whether a change coincided with a performance shift. The AI Co-pilot adds tuning insights and advice, giving DBmarlin a guidance layer alongside monitoring. Teams that want a focused database performance tool may value that pairing; those looking for a broader observability suite should compare its scope with their existing stack.

Integrations

DBmarlin lists integrations with Datadog, Grafana, Harness, Instana, Jenkins, Liquibase, New Relic and Splunk Observability Cloud. A Chrome extension adds a link beside SQL statements in Datadog to open their database performance in DBmarlin. It can also send database performance data to the New Relic API for display in New Relic dashboards, useful for teams that want database context alongside existing monitoring.

Pricing

DBmarlin uses a freemium model. Starter costs nothing, billed FREE/forever, and includes one database licence, unlimited users and no time limit. It is a practical way to evaluate the product or monitor a small scope without a recurring software charge, but its one-instance allowance limits its fit for larger estates.

Premium is £999/year per licence, with unlimited licences, unlimited users and priority support. The plan is aimed at teams that need paid coverage and support; monthly pricing is unavailable, and prices exclude tax. The headline licence count needs care: licensing is based on active instances, databases or nodes depending on the technology, and SAP HANA pricing is beta with pricing to be confirmed.

There is no free trial. Data retention is 8 days, a meaningful constraint for teams that need to investigate older performance trends. The free licence covers one database instance, so users should check the relevant technology's licensing unit before estimating the cost of expanding beyond it.

Platforms

DBmarlin runs on Linux, Windows and the web, and supports self-hosted or cloud deployment. Supported databases include MySQL, PostgreSQL, MariaDB, CockroachDB, SAP HANA, SQL Server, IBM Db2, Oracle, SAP ASE, Informix, MongoDB and Snowflake. That breadth is a strong point for heterogeneous environments, while the per-technology licensing basis means broad support does not guarantee a simple estate-wide cost calculation.

Who it's for

DBmarlin is best suited to database administrators and engineering teams that need to trace SQL performance, correlate issues with database changes and get tuning guidance across supported platforms. Its free single-instance licence suits a small initial deployment, while Premium is a better fit for teams that need wider paid coverage and priority support. It is less suitable for buyers who require a monthly billing option, longer than 8-day retention, or predictable licensing across a mixed estate without first mapping each technology to its billing unit.

Pros and cons

• Pros: SQL text, wait states, locks and execution plans give teams practical diagnostic context.
• Pros: Change detection and AI tuning advice complement performance monitoring rather than leaving teams with query metrics alone.
• Pros: Self-hosted and cloud deployment, broad database coverage and integrations with established monitoring tools support varied environments.
• Cons: Starter is limited to one database licence, so it is a constrained option for production estates with multiple instances.
• Cons: The counted licensing unit varies by database technology, complicating cost planning for mixed deployments.
• Cons: Eight-day retention and the absence of monthly pricing may not suit teams needing longer historical analysis or more flexible billing.

Alternatives

For broader application observability with a host-hour pricing model, Grafana Cloud Application Observability offers a free tier with 2,232 host hours and a Pro option billed per host hour plus a monthly platform fee. Choose it when that host-based approach better matches the monitoring scope.

If the need is a database engine rather than a separate monitoring product, MySQL offers a free Community Edition with SQL and NoSQL applications, replication and high-availability components, and connectors. For PostgreSQL monitoring specifically, pgwatch is free, open source and supports PostgreSQL versions 14 and later.

Amazon RDS is a paid database service with a Free Tier option and trial; choose it when managed database hosting is the priority. Percona Monitoring and Management is a free, open-source monitoring and management option when self-hosting and avoiding a software licence charge matter, though installation infrastructure may have separate costs.

For SQL Server-only tuning on Windows, AI SQL Tuner Studio offers a free plan for SQL Server Developer Edition and paid tiers with server-connection limits. Site24x7 Database Monitoring is another paid monitoring option, with a Lite plan starting at $9 a month billed annually and a free trial. Sematext Container Monitoring is worth comparing if container infrastructure monitoring and metered host-based pricing are a better match.

For more options, browse Database Performance Monitoring Software and Database Monitoring.

Verdict

Choose DBmarlin if your database team needs SQL and wait analysis, change detection and tuning guidance across several supported technologies, especially with a preference for self-hosted or cloud deployment flexibility. Its main advantage is connecting query-level diagnosis with change context; look elsewhere if eight-day retention is too short or the technology-dependent licensing units make costs difficult to plan.