chroma-core/chroma · error · UniqueConstraintError

UniqueConstraintError

UniqueConstraintError

Error message

Database {name} already exists for tenant {tenant}

What it means

Error "Database {name} already exists for tenant {tenant}" thrown in chroma-core/chroma.

Source

Thrown at chromadb/db/mixins/sysdb.py:93

            tenants = Table("tenants")
            insert_database = (
                self.querybuilder()
                .into(databases)
                .columns(databases.id, databases.name, databases.tenant_id)
                .insert(
                    ParameterValue(self.uuid_to_db(id)),
                    ParameterValue(name),
                    self.querybuilder()
                    .select(tenants.id)
                    .from_(tenants)
                    .where(tenants.id == ParameterValue(tenant)),
                )
            )
            sql, params = get_sql(insert_database, self.parameter_format())
            try:
                cur.execute(sql, params)
            except self.unique_constraint_error() as e:
                raise UniqueConstraintError(
                    f"Database {name} already exists for tenant {tenant}"
                ) from e

    @override
    def get_database(self, name: str, tenant: str = DEFAULT_TENANT) -> Database:
        with self.tx() as cur:
            databases = Table("databases")
            q = (
                self.querybuilder()
                .from_(databases)
                .select(databases.id, databases.name)
                .where(databases.name == ParameterValue(name))
                .where(databases.tenant_id == ParameterValue(tenant))
            )
            sql, params = get_sql(q, self.parameter_format())
            row = cur.execute(sql, params).fetchone()
            if not row:
                raise NotFoundError(

View on GitHub (pinned to aecdd12c8a)

When it happens

Trigger: Thrown at chromadb/db/mixins/sysdb.py:93 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of chroma-core/chroma@aecdd12c8a (2026-08-16). Data as JSON: /api/errors/6908e86182ddc2b6. Report an issue: GitHub.