Session state

Each Database::session() has its own state: current/home schema, current/home graph, time zone, parameters and query limits. Defaults are /main, no graph, UTC and no parameters. State is private to the session and not persisted.

SESSION SET GRAPH social;
SESSION SET VALUE $minimum INTEGER = 30;
MATCH (p:Person) WHERE p.age >= $minimum RETURN p.name AS name ORDER BY name;

SESSION SET validates into a private copy and publishes the new session state only on success. Graph/schema references store stable object IDs. If an object is dropped or an uncommitted creation is rolled back, its reference becomes stale; a later object with the same name does not repair it.

Successful session-setting and driver-parameter changes survive database ROLLBACK: they are session state, not transactional graph/catalog data. A failed explicit transaction restricts further operations to ROLLBACK or SESSION CLOSE.

Parameters · RESET and CLOSE · Time zones