List databases

Tool: inspect_database

Reach for this first when asked why a database is slow, large, bloated, or behind. It runs one predefined, read-only Postgres diagnostic against a Neon branch — pick the one that answers the question from the check parameter's list, instead of writing catalog SQL by hand. These are the same checks as the neon inspect db CLI command.

Not for: arbitrary SQL (run_sql), the slowest queries by average execution time with your own threshold and limit (list_slow_queries), the plan of one statement (explain_sql_statement), applying an optimization (prepare_query_tuning), compute and Neon Function logs (query_logs), or listing tables and columns (get_database_tables, describe_table_schema). Several checks read alike and are not: long-running-queries is what is running right now in the inspected database and has been for over five minutes; stalled-queries is a compute-wide snapshot of active queries running longer than 30 seconds with parallel-worker grouping, waits, and blockers; outliers is cumulative execution time since statistics were last reset; and calls is call frequency over that same history. Omit databaseName to run a database-scoped check against every database on the branch. The result adds a database column. stalled-queries, lfc-hit-rate, working-set, and replication-slots are compute-wide: they run once against the first listed database. For lfc-hit-rate and working-set, cache counters reset when the compute restarts. One failing database fails the whole run. bloat is a statistical estimate, not a measurement. When a check needs an extension that is not installed, the tool says so and names the CREATE EXTENSION statement. Installing it writes to the user's database — ask before running it.

• check (enum, required) Which diagnostic to run:
• projectId (string, required) The ID of the project to inspect
• branchId (string, optional) An optional ID of the branch. If not provided the default branch is used.
• databaseName (string, optional)
• computeId (string, optional) The ID of the compute/endpoint. If not provided, the read-write compute associated with the branch will be used.
• limit (number, optional) Maximum number of rows to return from the combined result. Per-database ranking and SQL caps are applied first. The response reports how many rows the check produced and whether they were truncated, so raise this only when truncated is true. A few checks are capped in SQL and say so in their description.

Console path: Projects → Branches → Roles & Databases

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